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Page 1: OTN Basics

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OTN BasicsOTN BasicsOTN BasicsOTN Basics

RSO Transmission

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Objectives

bull Upon completion of this course you will be able to

- Describe the OTN frame structure maintenance signals

and functions of different layers

- Outline alarm event generation mechanisms- Analyze alarms events and identify OTN faults

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983127983144983161 983157983155983141 983119983124983118

O983124N 983151983142983142983141983154983155 983156983144983141 983142983151983148983148983151983159983145983150983143 983137983140983158983137983150983156983137983143983141983155 983154983141983148983137983156983145983158983141 983156983151 983123ONE983124983123DH

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M983151983154983141 L983141983158983141983148983155 983151983142 983124983137983150983140983141983149 C983151983150983150983141983139983156983145983151983150 M983151983150983145983156983151983154983145983150983143 (983124CM)

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983123983159983145983156983139983144983145983150983143 983123983139983137983148983137983138983145983148983145983156983161O983124N 983144983137983155 983156983144983141 983142983151983148983148983151983159983145983150983143 983140983145983155983137983140983158983137983150983156983137983143983141983155

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983127983141 983159983145983148983148 983140983145983155983139983157983155983155 983156983144983141 983137983140983158983137983150983156983137983143983141983155 983137983150983140 983140983145983155983137983140983158983137983150983156983137983143983141983155 983145983150 983156983144983141

983142983151983148983148983151983159983145983150983143 983155983141983139983156983145983151983150983155

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Contents

11 OTN Introduction

12 OTN Port Structure13 MultiplexingMapping Principles and Bit

Rates

14 Overhead Description15 Maintenance Signals and Functions of

Different Layers

16 Alarm events

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OTN

bull Optical transport network (OTN)

-An OTN network is composed of a set of optical NEs connected by

optical fiber links These NEs are able to provide functions such as

transport multiplexing routing management supervision and

protection (survivability) of client signals according to the

requirements specified in REC G872

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Features of OTN

bull Compared with SDH and SONET networks an OTN network has the

following features

- Ultra capacity with high accuracy T-bitsecond per fiber over

DWDM lines- Service transparency for client signals

- Asynchronous mapping powerful FEC function simplified network

design and reduced costs

bull Compared with traditional WDM networks an OTN network has the

following features

- Enhanced OAM and networking capabilities for all services

- Dynamic electricaloptical-layer grooming

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OTN Standard System

983123983156983154983157983139983156983157983154983141

O983124N

O983124N 983150983141983156983159983151983154983147 983155983156983154983157983139983156983157983154983141G872

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983149983137983152983152983145983150983143

G983141983150983141983154983145983139 983142983154983137983149983141 983152983154983151983156983151983139983151983148 (GFP)G7041

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P983151983154983156983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G709

E983153983157983145983152983149983141983150983156

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983137983150983140

983142983141983137983156983157983154983141983155

F983141983137983156983157983154983141983155 983151983142 983142983157983150983139983156983145983151983150 983138983148983151983139983147983155 983151983142 983141983153983157983145983152983149983141983150983156 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G798

983124983154983137983150983155983152983151983154983156 983150983141983156983159983151983154983147 983141983153983157983145983152983149983141983150983156 983142983141983137983156983157983154983141983155 983140983141983155983139983154983145983152983156983145983151983150 983149983141983156983144983151983140983155 983137983150983140 983143983141983150983141983154983137983148 983142983157983150983139983156983145983151983150983155G806

P983144983161983155983145983139983137983148983085983148983137983161983141983154

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O983152983156983145983139983137983148 983155983141983139983157983154983145983156983161 983154983157983148983141 983137983150983140 983154983141983153983157983145983154983141983149983141983150983156983155 983145983150 983137983150 983151983152983156983145983139983137983148 983156983154983137983150983155983152983151983154983156 983155983161983155983156983141983149G664

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J983145983156983156983141983154 983137983150983140

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B983145983156 983141983154983154983151983154 983152983141983154983142983151983154983149983137983150983139983141 983152983137983154983137983149983141983156983141983154983155 983137983150983140 983155983152983141983139983145983142983145983139983137983156983145983151983150983155 983151983150

983145983150983156983141983154983150983137983156983145983151983150983137983148 983139983144983137983150983150983141983148983155 983151983142 983149983157983148983156983145983152983148983141 983139983137983154983154983145983141983154983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8201

E983153983157983145983152983149983141983150983156

983149983137983150983137983143983141983149983141983150983156

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O983124N 983150983141983156983159983151983154983147 P983154983151983156983151983139983151983148983085983150983141983157983156983154983137983148 983149983137983150983137983143983141983149983141983150983156983145983150983142983151983154983149983137983156983145983151983150 983149983151983140983141983148 983142983151983154 983156983144983141 983150983141983156983159983151983154983147 983141983148983141983149983141983150983156G8741

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Contents

11 OTN Introduction

12 OTN Port Structure13 MultiplexingMapping Principles and Bit

Rates

14 Overhead Description15 Maintenance Signals and Functions of

Different Layers

16 Alarms and Performance Events

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OTN Network Layers and Port Structure

bull OPUk optical channel payload unit-k

bull ODUk optical channel data unit-k

bull OTUk completely standardized optical

channel transport unit-k

bull OTUkV functionally standardized

Optical channel transport unit-k

bull OCh optical channel with full

functionalitybull OChr optical channel with reduced

functionality

bull OMS optical multiplex section

bull OTS optical transmission section

bull OPS optical physical section

bull OTM optical transport module

OD983125983147 (OD983125983147P 983137983150983140 OD983125983147983124)OP983125983147

O983124983125983147 O983124983125983147983126 O983124983125983147 O983124983125983147983126

OC983144 OC983144983154

OM983123983150

O983124983123983150OP983123983150

IPMPL983123 A983124M E983156983144983141983154983150983141983156 983123983124M983085N

O983124M9830850983149

O983124M983085983150983154983149

O983124M983085983150983149

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OTN TechnologyL983137983161983141983154983155 983151983142 983156983144983141 O983124N (G872 983151983150 983137983154983139983144983145983156983141983139983156983157983154983141 G709 983151983150 983142983154983137983149983141983155 983137983150983140 983142983151983154983149983137983156983155 G798 983151983150 983137983156983151983149983145983139

983142983157983150983139983156983145983151983150983155 983137983150983140 983152983154983151983139983141983155983155983141983155)

(983147 983101 983089983087983090983087983091983087983092 983142983151983154 983090983086983093983089983088983087983092983088983087983089983088983088983111983081

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OTN Ports

bull User to network interface (UNI)

bull Network node interface (NNI)

- Inter-domain interface (IrDI)

- Intra-domain interface (IaDI)

- Between equipment provided by different vendors (IrVI)

- Within subnet of one vendor (IaVI)

bull The completely standardized OTUk is used at OTM IrDIs and OTM IaDIs

bull The partly standardized OTUk is used at OTM IaDIs

O983124M

983125NI

O983124M NNI

I983137DI983085I983154983126I

O983124M NNI

I983137DI983085I983137983126I

O983124M NNII983137DI983085I983137983126I

N983141983156983159983151983154983147 O983152983141983154983137983156983151983154 B

983126983141983150983140983151983154983155 983128 983126983141983150983140983151983154983155 983129

O983124M

NNI

I983154DI

N983141983156983159983151983154983147

O983152983141983154983137983156983151983154

C

983125983123E983122

A

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for different

layers

16 Alarm and performance events

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OTN Multiplexing and Mapping Structure

M983137983152983152983145983150983143

M983157983148983156983145983152983148983141983160983145983150983143

OD983124983125G3

OD983124983125G2

OC983144983154

OC983144983154

OC983144983154

OC983144

OC983144

OC983144

O9831249831253983131983126983133

O9831249831252983131983126983133

O9831249831251983131983126983133

C983148983145983141983150983156 983155983145983143983150983137983148

C983148983145983141983150983156 983155983145983143983150983137983148

OP9831253OD9831253

OCC983154

OCC983154

OCC983154

OCC

OCC

OCC

OCG983085983150983154983149

1 le 983145+983146+983147 le 983150

OCG983085983150983149

1 le 983145+983146+983147 le 983150

OP9831252OD9831252

times1OP9831251OD9831251

O983124M983085983150983154983149

O983124983123 OM983123 OC983144 COMM983123O983123C OO983123

O983124M983085983150983149

times4

times1

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times1

times1

times1

times1

times1

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times1

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times1

times1

times1

times1

times1

times1

times 983145

times 983146

times 983147

times 983145

times 983146

times 1

C 983148 983145 983141 983150 983156 983155 983145 983143 983150 983137 983148

times1

O983124M9830850983149

times 983147

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OTN Multiplexing and Mapping Structure

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New OTN Multiplexing and Mapping Structure

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HO-ODULO-ODU CONCEPT

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HO-ODULO-ODU CONCEPT

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

7182019 OTN Basics

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Confidential

ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2391

1801201523 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

7182019 OTN Basics

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Confidential

ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

7182019 OTN Basics

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1801201525 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

7182019 OTN Basics

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1801201526 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

7182019 OTN Basics

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Confidential

P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

7182019 OTN Basics

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Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

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1801201529 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

7182019 OTN Basics

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1801201531 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201532 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

7182019 OTN Basics

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1801201533 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

7182019 OTN Basics

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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1801201536 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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1801201537 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

7182019 OTN Basics

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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Confidential

bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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Confidential

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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Confidential

OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 2: OTN Basics

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Objectives

bull Upon completion of this course you will be able to

- Describe the OTN frame structure maintenance signals

and functions of different layers

- Outline alarm event generation mechanisms- Analyze alarms events and identify OTN faults

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983127983144983161 983157983155983141 983119983124983118

O983124N 983151983142983142983141983154983155 983156983144983141 983142983151983148983148983151983159983145983150983143 983137983140983158983137983150983156983137983143983141983155 983154983141983148983137983156983145983158983141 983156983151 983123ONE983124983123DH

983123983156983154983151983150983143983141983154 F983151983154983159983137983154983140 E983154983154983151983154 C983151983154983154983141983139983156983145983151983150

M983151983154983141 L983141983158983141983148983155 983151983142 983124983137983150983140983141983149 C983151983150983150983141983139983156983145983151983150 M983151983150983145983156983151983154983145983150983143 (983124CM)

983124983154983137983150983155983152983137983154983141983150983156 983124983154983137983150983155983152983151983154983156 983151983142 C983148983145983141983150983156 983123983145983143983150983137983148983155

983123983159983145983156983139983144983145983150983143 983123983139983137983148983137983138983145983148983145983156983161O983124N 983144983137983155 983156983144983141 983142983151983148983148983151983159983145983150983143 983140983145983155983137983140983158983137983150983156983137983143983141983155

983122983141983153983157983145983154983141983155 983150983141983159 983144983137983154983140983159983137983154983141 983137983150983140 983149983137983150983137983143983141983149983141983150983156 983155983161983155983156983141983149

983127983141 983159983145983148983148 983140983145983155983139983157983155983155 983156983144983141 983137983140983158983137983150983156983137983143983141983155 983137983150983140 983140983145983155983137983140983158983137983150983156983137983143983141983155 983145983150 983156983144983141

983142983151983148983148983151983159983145983150983143 983155983141983139983156983145983151983150983155

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Contents

11 OTN Introduction

12 OTN Port Structure13 MultiplexingMapping Principles and Bit

Rates

14 Overhead Description15 Maintenance Signals and Functions of

Different Layers

16 Alarm events

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OTN

bull Optical transport network (OTN)

-An OTN network is composed of a set of optical NEs connected by

optical fiber links These NEs are able to provide functions such as

transport multiplexing routing management supervision and

protection (survivability) of client signals according to the

requirements specified in REC G872

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Features of OTN

bull Compared with SDH and SONET networks an OTN network has the

following features

- Ultra capacity with high accuracy T-bitsecond per fiber over

DWDM lines- Service transparency for client signals

- Asynchronous mapping powerful FEC function simplified network

design and reduced costs

bull Compared with traditional WDM networks an OTN network has the

following features

- Enhanced OAM and networking capabilities for all services

- Dynamic electricaloptical-layer grooming

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OTN Standard System

983123983156983154983157983139983156983157983154983141

O983124N

O983124N 983150983141983156983159983151983154983147 983155983156983154983157983139983156983157983154983141G872

A983123ON 983150983141983156983159983151983154983147 983155983156983154983157983139983156983157983154983141G8080

983123983156983154983157983139983156983157983154983141 983137983150983140

983149983137983152983152983145983150983143

G983141983150983141983154983145983139 983142983154983137983149983141 983152983154983151983156983151983139983151983148 (GFP)G7041

L983145983150983147 983139983137983152983137983139983145983156983161 983137983140983146983157983155983156983149983141983150983156983155983139983144983141983149983141 (LCA983123) 983142983151983154 983158983145983154983156983157983137983148 983139983151983150983139983137983156983141983150983137983156983145983151983150 983155983145983143983150983137983148983155G7042

P983151983154983156983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G709

E983153983157983145983152983149983141983150983156

983142983157983150983139983156983145983151983150983155

983137983150983140

983142983141983137983156983157983154983141983155

F983141983137983156983157983154983141983155 983151983142 983142983157983150983139983156983145983151983150 983138983148983151983139983147983155 983151983142 983141983153983157983145983152983149983141983150983156 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G798

983124983154983137983150983155983152983151983154983156 983150983141983156983159983151983154983147 983141983153983157983145983152983149983141983150983156 983142983141983137983156983157983154983141983155 983140983141983155983139983154983145983152983156983145983151983150 983149983141983156983144983151983140983155 983137983150983140 983143983141983150983141983154983137983148 983142983157983150983139983156983145983151983150983155G806

P983144983161983155983145983139983137983148983085983148983137983161983141983154

983142983141983137983156983157983154983141983155O983152983156983145983139983137983148 983152983151983154983156983155 983142983151983154 983145983150983156983154983137983085983151983142983142983145983139983141 983155983161983155983156983141983149983155G693

O983152983156983145983139983137983148 983155983141983139983157983154983145983156983161 983154983157983148983141 983137983150983140 983154983141983153983157983145983154983141983149983141983150983156983155 983145983150 983137983150 983151983152983156983145983139983137983148 983156983154983137983150983155983152983151983154983156 983155983161983155983156983141983149G664

P983144983161983155983145983139983137983148983085983148983137983161983141983154 983152983151983154983156983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G9591

N983141983156983159983151983154983147

983152983154983151983156983141983139983156983145983151983150

L983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8731

983122983145983150983143 983152983154983151983156983141983139983156983145983151983150 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8732

J983145983156983156983141983154 983137983150983140

983152983141983154983142983151983154983149983137983150983139983141

J983145983156983156983141983154 983137983150983140 983155983144983145983142983156 983139983151983150983156983154983151983148 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8251

B983145983156 983141983154983154983151983154 983152983141983154983142983151983154983149983137983150983139983141 983152983137983154983137983149983141983156983141983154983155 983137983150983140 983155983152983141983139983145983142983145983139983137983156983145983151983150983155 983151983150

983145983150983156983141983154983150983137983156983145983151983150983137983148 983139983144983137983150983150983141983148983155 983151983142 983149983157983148983156983145983152983148983141 983139983137983154983154983145983141983154983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8201

E983153983157983145983152983149983141983150983156

983149983137983150983137983143983141983149983141983150983156

M983137983150983137983143983141983149983141983150983156 983142983141983137983156983157983154983141983155 983151983142 NE983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G874

O983124N 983150983141983156983159983151983154983147 P983154983151983156983151983139983151983148983085983150983141983157983156983154983137983148 983149983137983150983137983143983141983149983141983150983156983145983150983142983151983154983149983137983156983145983151983150 983149983151983140983141983148 983142983151983154 983156983144983141 983150983141983156983159983151983154983147 983141983148983141983149983141983150983156G8741

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Confidential

Contents

11 OTN Introduction

12 OTN Port Structure13 MultiplexingMapping Principles and Bit

Rates

14 Overhead Description15 Maintenance Signals and Functions of

Different Layers

16 Alarms and Performance Events

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Confidential

OTN Network Layers and Port Structure

bull OPUk optical channel payload unit-k

bull ODUk optical channel data unit-k

bull OTUk completely standardized optical

channel transport unit-k

bull OTUkV functionally standardized

Optical channel transport unit-k

bull OCh optical channel with full

functionalitybull OChr optical channel with reduced

functionality

bull OMS optical multiplex section

bull OTS optical transmission section

bull OPS optical physical section

bull OTM optical transport module

OD983125983147 (OD983125983147P 983137983150983140 OD983125983147983124)OP983125983147

O983124983125983147 O983124983125983147983126 O983124983125983147 O983124983125983147983126

OC983144 OC983144983154

OM983123983150

O983124983123983150OP983123983150

IPMPL983123 A983124M E983156983144983141983154983150983141983156 983123983124M983085N

O983124M9830850983149

O983124M983085983150983154983149

O983124M983085983150983149

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Confidential

OTN TechnologyL983137983161983141983154983155 983151983142 983156983144983141 O983124N (G872 983151983150 983137983154983139983144983145983156983141983139983156983157983154983141 G709 983151983150 983142983154983137983149983141983155 983137983150983140 983142983151983154983149983137983156983155 G798 983151983150 983137983156983151983149983145983139

983142983157983150983139983156983145983151983150983155 983137983150983140 983152983154983151983139983141983155983155983141983155)

(983147 983101 983089983087983090983087983091983087983092 983142983151983154 983090983086983093983089983088983087983092983088983087983089983088983088983111983081

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Confidential

OTN Ports

bull User to network interface (UNI)

bull Network node interface (NNI)

- Inter-domain interface (IrDI)

- Intra-domain interface (IaDI)

- Between equipment provided by different vendors (IrVI)

- Within subnet of one vendor (IaVI)

bull The completely standardized OTUk is used at OTM IrDIs and OTM IaDIs

bull The partly standardized OTUk is used at OTM IaDIs

O983124M

983125NI

O983124M NNI

I983137DI983085I983154983126I

O983124M NNI

I983137DI983085I983137983126I

O983124M NNII983137DI983085I983137983126I

N983141983156983159983151983154983147 O983152983141983154983137983156983151983154 B

983126983141983150983140983151983154983155 983128 983126983141983150983140983151983154983155 983129

O983124M

NNI

I983154DI

N983141983156983159983151983154983147

O983152983141983154983137983156983151983154

C

983125983123E983122

A

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for different

layers

16 Alarm and performance events

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Confidential

OTN Multiplexing and Mapping Structure

M983137983152983152983145983150983143

M983157983148983156983145983152983148983141983160983145983150983143

OD983124983125G3

OD983124983125G2

OC983144983154

OC983144983154

OC983144983154

OC983144

OC983144

OC983144

O9831249831253983131983126983133

O9831249831252983131983126983133

O9831249831251983131983126983133

C983148983145983141983150983156 983155983145983143983150983137983148

C983148983145983141983150983156 983155983145983143983150983137983148

OP9831253OD9831253

OCC983154

OCC983154

OCC983154

OCC

OCC

OCC

OCG983085983150983154983149

1 le 983145+983146+983147 le 983150

OCG983085983150983149

1 le 983145+983146+983147 le 983150

OP9831252OD9831252

times1OP9831251OD9831251

O983124M983085983150983154983149

O983124983123 OM983123 OC983144 COMM983123O983123C OO983123

O983124M983085983150983149

times4

times1

times1times4

times16times1

times1times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times 983145

times 983146

times 983147

times 983145

times 983146

times 1

C 983148 983145 983141 983150 983156 983155 983145 983143 983150 983137 983148

times1

O983124M9830850983149

times 983147

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Confidential

OTN Multiplexing and Mapping Structure

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Confidential

New OTN Multiplexing and Mapping Structure

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Confidential

HO-ODULO-ODU CONCEPT

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Confidential

HO-ODULO-ODU CONCEPT

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Confidential

OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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Confidential

ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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Confidential

OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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Confidential

P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

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ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

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Confidential

ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

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ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

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OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

7182019 OTN Basics

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1801201526 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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Confidential

P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

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Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3891

1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3991

1801201539 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 4091

1801201540 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 4191

1801201541 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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1801201542 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

7182019 OTN Basics

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1801201544 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

7182019 OTN Basics

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

7182019 OTN Basics

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 3: OTN Basics

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983127983144983161 983157983155983141 983119983124983118

O983124N 983151983142983142983141983154983155 983156983144983141 983142983151983148983148983151983159983145983150983143 983137983140983158983137983150983156983137983143983141983155 983154983141983148983137983156983145983158983141 983156983151 983123ONE983124983123DH

983123983156983154983151983150983143983141983154 F983151983154983159983137983154983140 E983154983154983151983154 C983151983154983154983141983139983156983145983151983150

M983151983154983141 L983141983158983141983148983155 983151983142 983124983137983150983140983141983149 C983151983150983150983141983139983156983145983151983150 M983151983150983145983156983151983154983145983150983143 (983124CM)

983124983154983137983150983155983152983137983154983141983150983156 983124983154983137983150983155983152983151983154983156 983151983142 C983148983145983141983150983156 983123983145983143983150983137983148983155

983123983159983145983156983139983144983145983150983143 983123983139983137983148983137983138983145983148983145983156983161O983124N 983144983137983155 983156983144983141 983142983151983148983148983151983159983145983150983143 983140983145983155983137983140983158983137983150983156983137983143983141983155

983122983141983153983157983145983154983141983155 983150983141983159 983144983137983154983140983159983137983154983141 983137983150983140 983149983137983150983137983143983141983149983141983150983156 983155983161983155983156983141983149

983127983141 983159983145983148983148 983140983145983155983139983157983155983155 983156983144983141 983137983140983158983137983150983156983137983143983141983155 983137983150983140 983140983145983155983137983140983158983137983150983156983137983143983141983155 983145983150 983156983144983141

983142983151983148983148983151983159983145983150983143 983155983141983139983156983145983151983150983155

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Contents

11 OTN Introduction

12 OTN Port Structure13 MultiplexingMapping Principles and Bit

Rates

14 Overhead Description15 Maintenance Signals and Functions of

Different Layers

16 Alarm events

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OTN

bull Optical transport network (OTN)

-An OTN network is composed of a set of optical NEs connected by

optical fiber links These NEs are able to provide functions such as

transport multiplexing routing management supervision and

protection (survivability) of client signals according to the

requirements specified in REC G872

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Features of OTN

bull Compared with SDH and SONET networks an OTN network has the

following features

- Ultra capacity with high accuracy T-bitsecond per fiber over

DWDM lines- Service transparency for client signals

- Asynchronous mapping powerful FEC function simplified network

design and reduced costs

bull Compared with traditional WDM networks an OTN network has the

following features

- Enhanced OAM and networking capabilities for all services

- Dynamic electricaloptical-layer grooming

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OTN Standard System

983123983156983154983157983139983156983157983154983141

O983124N

O983124N 983150983141983156983159983151983154983147 983155983156983154983157983139983156983157983154983141G872

A983123ON 983150983141983156983159983151983154983147 983155983156983154983157983139983156983157983154983141G8080

983123983156983154983157983139983156983157983154983141 983137983150983140

983149983137983152983152983145983150983143

G983141983150983141983154983145983139 983142983154983137983149983141 983152983154983151983156983151983139983151983148 (GFP)G7041

L983145983150983147 983139983137983152983137983139983145983156983161 983137983140983146983157983155983156983149983141983150983156983155983139983144983141983149983141 (LCA983123) 983142983151983154 983158983145983154983156983157983137983148 983139983151983150983139983137983156983141983150983137983156983145983151983150 983155983145983143983150983137983148983155G7042

P983151983154983156983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G709

E983153983157983145983152983149983141983150983156

983142983157983150983139983156983145983151983150983155

983137983150983140

983142983141983137983156983157983154983141983155

F983141983137983156983157983154983141983155 983151983142 983142983157983150983139983156983145983151983150 983138983148983151983139983147983155 983151983142 983141983153983157983145983152983149983141983150983156 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G798

983124983154983137983150983155983152983151983154983156 983150983141983156983159983151983154983147 983141983153983157983145983152983149983141983150983156 983142983141983137983156983157983154983141983155 983140983141983155983139983154983145983152983156983145983151983150 983149983141983156983144983151983140983155 983137983150983140 983143983141983150983141983154983137983148 983142983157983150983139983156983145983151983150983155G806

P983144983161983155983145983139983137983148983085983148983137983161983141983154

983142983141983137983156983157983154983141983155O983152983156983145983139983137983148 983152983151983154983156983155 983142983151983154 983145983150983156983154983137983085983151983142983142983145983139983141 983155983161983155983156983141983149983155G693

O983152983156983145983139983137983148 983155983141983139983157983154983145983156983161 983154983157983148983141 983137983150983140 983154983141983153983157983145983154983141983149983141983150983156983155 983145983150 983137983150 983151983152983156983145983139983137983148 983156983154983137983150983155983152983151983154983156 983155983161983155983156983141983149G664

P983144983161983155983145983139983137983148983085983148983137983161983141983154 983152983151983154983156983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G9591

N983141983156983159983151983154983147

983152983154983151983156983141983139983156983145983151983150

L983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8731

983122983145983150983143 983152983154983151983156983141983139983156983145983151983150 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8732

J983145983156983156983141983154 983137983150983140

983152983141983154983142983151983154983149983137983150983139983141

J983145983156983156983141983154 983137983150983140 983155983144983145983142983156 983139983151983150983156983154983151983148 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8251

B983145983156 983141983154983154983151983154 983152983141983154983142983151983154983149983137983150983139983141 983152983137983154983137983149983141983156983141983154983155 983137983150983140 983155983152983141983139983145983142983145983139983137983156983145983151983150983155 983151983150

983145983150983156983141983154983150983137983156983145983151983150983137983148 983139983144983137983150983150983141983148983155 983151983142 983149983157983148983156983145983152983148983141 983139983137983154983154983145983141983154983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8201

E983153983157983145983152983149983141983150983156

983149983137983150983137983143983141983149983141983150983156

M983137983150983137983143983141983149983141983150983156 983142983141983137983156983157983154983141983155 983151983142 NE983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G874

O983124N 983150983141983156983159983151983154983147 P983154983151983156983151983139983151983148983085983150983141983157983156983154983137983148 983149983137983150983137983143983141983149983141983150983156983145983150983142983151983154983149983137983156983145983151983150 983149983151983140983141983148 983142983151983154 983156983144983141 983150983141983156983159983151983154983147 983141983148983141983149983141983150983156G8741

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Contents

11 OTN Introduction

12 OTN Port Structure13 MultiplexingMapping Principles and Bit

Rates

14 Overhead Description15 Maintenance Signals and Functions of

Different Layers

16 Alarms and Performance Events

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OTN Network Layers and Port Structure

bull OPUk optical channel payload unit-k

bull ODUk optical channel data unit-k

bull OTUk completely standardized optical

channel transport unit-k

bull OTUkV functionally standardized

Optical channel transport unit-k

bull OCh optical channel with full

functionalitybull OChr optical channel with reduced

functionality

bull OMS optical multiplex section

bull OTS optical transmission section

bull OPS optical physical section

bull OTM optical transport module

OD983125983147 (OD983125983147P 983137983150983140 OD983125983147983124)OP983125983147

O983124983125983147 O983124983125983147983126 O983124983125983147 O983124983125983147983126

OC983144 OC983144983154

OM983123983150

O983124983123983150OP983123983150

IPMPL983123 A983124M E983156983144983141983154983150983141983156 983123983124M983085N

O983124M9830850983149

O983124M983085983150983154983149

O983124M983085983150983149

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OTN TechnologyL983137983161983141983154983155 983151983142 983156983144983141 O983124N (G872 983151983150 983137983154983139983144983145983156983141983139983156983157983154983141 G709 983151983150 983142983154983137983149983141983155 983137983150983140 983142983151983154983149983137983156983155 G798 983151983150 983137983156983151983149983145983139

983142983157983150983139983156983145983151983150983155 983137983150983140 983152983154983151983139983141983155983155983141983155)

(983147 983101 983089983087983090983087983091983087983092 983142983151983154 983090983086983093983089983088983087983092983088983087983089983088983088983111983081

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OTN Ports

bull User to network interface (UNI)

bull Network node interface (NNI)

- Inter-domain interface (IrDI)

- Intra-domain interface (IaDI)

- Between equipment provided by different vendors (IrVI)

- Within subnet of one vendor (IaVI)

bull The completely standardized OTUk is used at OTM IrDIs and OTM IaDIs

bull The partly standardized OTUk is used at OTM IaDIs

O983124M

983125NI

O983124M NNI

I983137DI983085I983154983126I

O983124M NNI

I983137DI983085I983137983126I

O983124M NNII983137DI983085I983137983126I

N983141983156983159983151983154983147 O983152983141983154983137983156983151983154 B

983126983141983150983140983151983154983155 983128 983126983141983150983140983151983154983155 983129

O983124M

NNI

I983154DI

N983141983156983159983151983154983147

O983152983141983154983137983156983151983154

C

983125983123E983122

A

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for different

layers

16 Alarm and performance events

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OTN Multiplexing and Mapping Structure

M983137983152983152983145983150983143

M983157983148983156983145983152983148983141983160983145983150983143

OD983124983125G3

OD983124983125G2

OC983144983154

OC983144983154

OC983144983154

OC983144

OC983144

OC983144

O9831249831253983131983126983133

O9831249831252983131983126983133

O9831249831251983131983126983133

C983148983145983141983150983156 983155983145983143983150983137983148

C983148983145983141983150983156 983155983145983143983150983137983148

OP9831253OD9831253

OCC983154

OCC983154

OCC983154

OCC

OCC

OCC

OCG983085983150983154983149

1 le 983145+983146+983147 le 983150

OCG983085983150983149

1 le 983145+983146+983147 le 983150

OP9831252OD9831252

times1OP9831251OD9831251

O983124M983085983150983154983149

O983124983123 OM983123 OC983144 COMM983123O983123C OO983123

O983124M983085983150983149

times4

times1

times1times4

times16times1

times1times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times 983145

times 983146

times 983147

times 983145

times 983146

times 1

C 983148 983145 983141 983150 983156 983155 983145 983143 983150 983137 983148

times1

O983124M9830850983149

times 983147

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OTN Multiplexing and Mapping Structure

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New OTN Multiplexing and Mapping Structure

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HO-ODULO-ODU CONCEPT

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HO-ODULO-ODU CONCEPT

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

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ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

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ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

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ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

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OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

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Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

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Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

7182019 OTN Basics

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1801201531 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201532 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

7182019 OTN Basics

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1801201533 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

7182019 OTN Basics

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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1801201536 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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1801201537 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Confidential

Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Confidential

Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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Confidential

bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 4: OTN Basics

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Contents

11 OTN Introduction

12 OTN Port Structure13 MultiplexingMapping Principles and Bit

Rates

14 Overhead Description15 Maintenance Signals and Functions of

Different Layers

16 Alarm events

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OTN

bull Optical transport network (OTN)

-An OTN network is composed of a set of optical NEs connected by

optical fiber links These NEs are able to provide functions such as

transport multiplexing routing management supervision and

protection (survivability) of client signals according to the

requirements specified in REC G872

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Features of OTN

bull Compared with SDH and SONET networks an OTN network has the

following features

- Ultra capacity with high accuracy T-bitsecond per fiber over

DWDM lines- Service transparency for client signals

- Asynchronous mapping powerful FEC function simplified network

design and reduced costs

bull Compared with traditional WDM networks an OTN network has the

following features

- Enhanced OAM and networking capabilities for all services

- Dynamic electricaloptical-layer grooming

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OTN Standard System

983123983156983154983157983139983156983157983154983141

O983124N

O983124N 983150983141983156983159983151983154983147 983155983156983154983157983139983156983157983154983141G872

A983123ON 983150983141983156983159983151983154983147 983155983156983154983157983139983156983157983154983141G8080

983123983156983154983157983139983156983157983154983141 983137983150983140

983149983137983152983152983145983150983143

G983141983150983141983154983145983139 983142983154983137983149983141 983152983154983151983156983151983139983151983148 (GFP)G7041

L983145983150983147 983139983137983152983137983139983145983156983161 983137983140983146983157983155983156983149983141983150983156983155983139983144983141983149983141 (LCA983123) 983142983151983154 983158983145983154983156983157983137983148 983139983151983150983139983137983156983141983150983137983156983145983151983150 983155983145983143983150983137983148983155G7042

P983151983154983156983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G709

E983153983157983145983152983149983141983150983156

983142983157983150983139983156983145983151983150983155

983137983150983140

983142983141983137983156983157983154983141983155

F983141983137983156983157983154983141983155 983151983142 983142983157983150983139983156983145983151983150 983138983148983151983139983147983155 983151983142 983141983153983157983145983152983149983141983150983156 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G798

983124983154983137983150983155983152983151983154983156 983150983141983156983159983151983154983147 983141983153983157983145983152983149983141983150983156 983142983141983137983156983157983154983141983155 983140983141983155983139983154983145983152983156983145983151983150 983149983141983156983144983151983140983155 983137983150983140 983143983141983150983141983154983137983148 983142983157983150983139983156983145983151983150983155G806

P983144983161983155983145983139983137983148983085983148983137983161983141983154

983142983141983137983156983157983154983141983155O983152983156983145983139983137983148 983152983151983154983156983155 983142983151983154 983145983150983156983154983137983085983151983142983142983145983139983141 983155983161983155983156983141983149983155G693

O983152983156983145983139983137983148 983155983141983139983157983154983145983156983161 983154983157983148983141 983137983150983140 983154983141983153983157983145983154983141983149983141983150983156983155 983145983150 983137983150 983151983152983156983145983139983137983148 983156983154983137983150983155983152983151983154983156 983155983161983155983156983141983149G664

P983144983161983155983145983139983137983148983085983148983137983161983141983154 983152983151983154983156983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G9591

N983141983156983159983151983154983147

983152983154983151983156983141983139983156983145983151983150

L983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8731

983122983145983150983143 983152983154983151983156983141983139983156983145983151983150 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8732

J983145983156983156983141983154 983137983150983140

983152983141983154983142983151983154983149983137983150983139983141

J983145983156983156983141983154 983137983150983140 983155983144983145983142983156 983139983151983150983156983154983151983148 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8251

B983145983156 983141983154983154983151983154 983152983141983154983142983151983154983149983137983150983139983141 983152983137983154983137983149983141983156983141983154983155 983137983150983140 983155983152983141983139983145983142983145983139983137983156983145983151983150983155 983151983150

983145983150983156983141983154983150983137983156983145983151983150983137983148 983139983144983137983150983150983141983148983155 983151983142 983149983157983148983156983145983152983148983141 983139983137983154983154983145983141983154983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8201

E983153983157983145983152983149983141983150983156

983149983137983150983137983143983141983149983141983150983156

M983137983150983137983143983141983149983141983150983156 983142983141983137983156983157983154983141983155 983151983142 NE983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G874

O983124N 983150983141983156983159983151983154983147 P983154983151983156983151983139983151983148983085983150983141983157983156983154983137983148 983149983137983150983137983143983141983149983141983150983156983145983150983142983151983154983149983137983156983145983151983150 983149983151983140983141983148 983142983151983154 983156983144983141 983150983141983156983159983151983154983147 983141983148983141983149983141983150983156G8741

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Confidential

Contents

11 OTN Introduction

12 OTN Port Structure13 MultiplexingMapping Principles and Bit

Rates

14 Overhead Description15 Maintenance Signals and Functions of

Different Layers

16 Alarms and Performance Events

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Confidential

OTN Network Layers and Port Structure

bull OPUk optical channel payload unit-k

bull ODUk optical channel data unit-k

bull OTUk completely standardized optical

channel transport unit-k

bull OTUkV functionally standardized

Optical channel transport unit-k

bull OCh optical channel with full

functionalitybull OChr optical channel with reduced

functionality

bull OMS optical multiplex section

bull OTS optical transmission section

bull OPS optical physical section

bull OTM optical transport module

OD983125983147 (OD983125983147P 983137983150983140 OD983125983147983124)OP983125983147

O983124983125983147 O983124983125983147983126 O983124983125983147 O983124983125983147983126

OC983144 OC983144983154

OM983123983150

O983124983123983150OP983123983150

IPMPL983123 A983124M E983156983144983141983154983150983141983156 983123983124M983085N

O983124M9830850983149

O983124M983085983150983154983149

O983124M983085983150983149

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OTN TechnologyL983137983161983141983154983155 983151983142 983156983144983141 O983124N (G872 983151983150 983137983154983139983144983145983156983141983139983156983157983154983141 G709 983151983150 983142983154983137983149983141983155 983137983150983140 983142983151983154983149983137983156983155 G798 983151983150 983137983156983151983149983145983139

983142983157983150983139983156983145983151983150983155 983137983150983140 983152983154983151983139983141983155983155983141983155)

(983147 983101 983089983087983090983087983091983087983092 983142983151983154 983090983086983093983089983088983087983092983088983087983089983088983088983111983081

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Confidential

OTN Ports

bull User to network interface (UNI)

bull Network node interface (NNI)

- Inter-domain interface (IrDI)

- Intra-domain interface (IaDI)

- Between equipment provided by different vendors (IrVI)

- Within subnet of one vendor (IaVI)

bull The completely standardized OTUk is used at OTM IrDIs and OTM IaDIs

bull The partly standardized OTUk is used at OTM IaDIs

O983124M

983125NI

O983124M NNI

I983137DI983085I983154983126I

O983124M NNI

I983137DI983085I983137983126I

O983124M NNII983137DI983085I983137983126I

N983141983156983159983151983154983147 O983152983141983154983137983156983151983154 B

983126983141983150983140983151983154983155 983128 983126983141983150983140983151983154983155 983129

O983124M

NNI

I983154DI

N983141983156983159983151983154983147

O983152983141983154983137983156983151983154

C

983125983123E983122

A

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for different

layers

16 Alarm and performance events

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Confidential

OTN Multiplexing and Mapping Structure

M983137983152983152983145983150983143

M983157983148983156983145983152983148983141983160983145983150983143

OD983124983125G3

OD983124983125G2

OC983144983154

OC983144983154

OC983144983154

OC983144

OC983144

OC983144

O9831249831253983131983126983133

O9831249831252983131983126983133

O9831249831251983131983126983133

C983148983145983141983150983156 983155983145983143983150983137983148

C983148983145983141983150983156 983155983145983143983150983137983148

OP9831253OD9831253

OCC983154

OCC983154

OCC983154

OCC

OCC

OCC

OCG983085983150983154983149

1 le 983145+983146+983147 le 983150

OCG983085983150983149

1 le 983145+983146+983147 le 983150

OP9831252OD9831252

times1OP9831251OD9831251

O983124M983085983150983154983149

O983124983123 OM983123 OC983144 COMM983123O983123C OO983123

O983124M983085983150983149

times4

times1

times1times4

times16times1

times1times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times 983145

times 983146

times 983147

times 983145

times 983146

times 1

C 983148 983145 983141 983150 983156 983155 983145 983143 983150 983137 983148

times1

O983124M9830850983149

times 983147

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Confidential

OTN Multiplexing and Mapping Structure

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New OTN Multiplexing and Mapping Structure

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HO-ODULO-ODU CONCEPT

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HO-ODULO-ODU CONCEPT

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

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ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

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ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

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ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

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OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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Confidential

P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

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Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

7182019 OTN Basics

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1801201539 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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1801201540 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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1801201541 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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1801201542 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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Confidential

bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 5: OTN Basics

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OTN

bull Optical transport network (OTN)

-An OTN network is composed of a set of optical NEs connected by

optical fiber links These NEs are able to provide functions such as

transport multiplexing routing management supervision and

protection (survivability) of client signals according to the

requirements specified in REC G872

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Features of OTN

bull Compared with SDH and SONET networks an OTN network has the

following features

- Ultra capacity with high accuracy T-bitsecond per fiber over

DWDM lines- Service transparency for client signals

- Asynchronous mapping powerful FEC function simplified network

design and reduced costs

bull Compared with traditional WDM networks an OTN network has the

following features

- Enhanced OAM and networking capabilities for all services

- Dynamic electricaloptical-layer grooming

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OTN Standard System

983123983156983154983157983139983156983157983154983141

O983124N

O983124N 983150983141983156983159983151983154983147 983155983156983154983157983139983156983157983154983141G872

A983123ON 983150983141983156983159983151983154983147 983155983156983154983157983139983156983157983154983141G8080

983123983156983154983157983139983156983157983154983141 983137983150983140

983149983137983152983152983145983150983143

G983141983150983141983154983145983139 983142983154983137983149983141 983152983154983151983156983151983139983151983148 (GFP)G7041

L983145983150983147 983139983137983152983137983139983145983156983161 983137983140983146983157983155983156983149983141983150983156983155983139983144983141983149983141 (LCA983123) 983142983151983154 983158983145983154983156983157983137983148 983139983151983150983139983137983156983141983150983137983156983145983151983150 983155983145983143983150983137983148983155G7042

P983151983154983156983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G709

E983153983157983145983152983149983141983150983156

983142983157983150983139983156983145983151983150983155

983137983150983140

983142983141983137983156983157983154983141983155

F983141983137983156983157983154983141983155 983151983142 983142983157983150983139983156983145983151983150 983138983148983151983139983147983155 983151983142 983141983153983157983145983152983149983141983150983156 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G798

983124983154983137983150983155983152983151983154983156 983150983141983156983159983151983154983147 983141983153983157983145983152983149983141983150983156 983142983141983137983156983157983154983141983155 983140983141983155983139983154983145983152983156983145983151983150 983149983141983156983144983151983140983155 983137983150983140 983143983141983150983141983154983137983148 983142983157983150983139983156983145983151983150983155G806

P983144983161983155983145983139983137983148983085983148983137983161983141983154

983142983141983137983156983157983154983141983155O983152983156983145983139983137983148 983152983151983154983156983155 983142983151983154 983145983150983156983154983137983085983151983142983142983145983139983141 983155983161983155983156983141983149983155G693

O983152983156983145983139983137983148 983155983141983139983157983154983145983156983161 983154983157983148983141 983137983150983140 983154983141983153983157983145983154983141983149983141983150983156983155 983145983150 983137983150 983151983152983156983145983139983137983148 983156983154983137983150983155983152983151983154983156 983155983161983155983156983141983149G664

P983144983161983155983145983139983137983148983085983148983137983161983141983154 983152983151983154983156983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G9591

N983141983156983159983151983154983147

983152983154983151983156983141983139983156983145983151983150

L983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8731

983122983145983150983143 983152983154983151983156983141983139983156983145983151983150 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8732

J983145983156983156983141983154 983137983150983140

983152983141983154983142983151983154983149983137983150983139983141

J983145983156983156983141983154 983137983150983140 983155983144983145983142983156 983139983151983150983156983154983151983148 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8251

B983145983156 983141983154983154983151983154 983152983141983154983142983151983154983149983137983150983139983141 983152983137983154983137983149983141983156983141983154983155 983137983150983140 983155983152983141983139983145983142983145983139983137983156983145983151983150983155 983151983150

983145983150983156983141983154983150983137983156983145983151983150983137983148 983139983144983137983150983150983141983148983155 983151983142 983149983157983148983156983145983152983148983141 983139983137983154983154983145983141983154983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8201

E983153983157983145983152983149983141983150983156

983149983137983150983137983143983141983149983141983150983156

M983137983150983137983143983141983149983141983150983156 983142983141983137983156983157983154983141983155 983151983142 NE983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G874

O983124N 983150983141983156983159983151983154983147 P983154983151983156983151983139983151983148983085983150983141983157983156983154983137983148 983149983137983150983137983143983141983149983141983150983156983145983150983142983151983154983149983137983156983145983151983150 983149983151983140983141983148 983142983151983154 983156983144983141 983150983141983156983159983151983154983147 983141983148983141983149983141983150983156G8741

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Contents

11 OTN Introduction

12 OTN Port Structure13 MultiplexingMapping Principles and Bit

Rates

14 Overhead Description15 Maintenance Signals and Functions of

Different Layers

16 Alarms and Performance Events

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OTN Network Layers and Port Structure

bull OPUk optical channel payload unit-k

bull ODUk optical channel data unit-k

bull OTUk completely standardized optical

channel transport unit-k

bull OTUkV functionally standardized

Optical channel transport unit-k

bull OCh optical channel with full

functionalitybull OChr optical channel with reduced

functionality

bull OMS optical multiplex section

bull OTS optical transmission section

bull OPS optical physical section

bull OTM optical transport module

OD983125983147 (OD983125983147P 983137983150983140 OD983125983147983124)OP983125983147

O983124983125983147 O983124983125983147983126 O983124983125983147 O983124983125983147983126

OC983144 OC983144983154

OM983123983150

O983124983123983150OP983123983150

IPMPL983123 A983124M E983156983144983141983154983150983141983156 983123983124M983085N

O983124M9830850983149

O983124M983085983150983154983149

O983124M983085983150983149

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OTN TechnologyL983137983161983141983154983155 983151983142 983156983144983141 O983124N (G872 983151983150 983137983154983139983144983145983156983141983139983156983157983154983141 G709 983151983150 983142983154983137983149983141983155 983137983150983140 983142983151983154983149983137983156983155 G798 983151983150 983137983156983151983149983145983139

983142983157983150983139983156983145983151983150983155 983137983150983140 983152983154983151983139983141983155983155983141983155)

(983147 983101 983089983087983090983087983091983087983092 983142983151983154 983090983086983093983089983088983087983092983088983087983089983088983088983111983081

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OTN Ports

bull User to network interface (UNI)

bull Network node interface (NNI)

- Inter-domain interface (IrDI)

- Intra-domain interface (IaDI)

- Between equipment provided by different vendors (IrVI)

- Within subnet of one vendor (IaVI)

bull The completely standardized OTUk is used at OTM IrDIs and OTM IaDIs

bull The partly standardized OTUk is used at OTM IaDIs

O983124M

983125NI

O983124M NNI

I983137DI983085I983154983126I

O983124M NNI

I983137DI983085I983137983126I

O983124M NNII983137DI983085I983137983126I

N983141983156983159983151983154983147 O983152983141983154983137983156983151983154 B

983126983141983150983140983151983154983155 983128 983126983141983150983140983151983154983155 983129

O983124M

NNI

I983154DI

N983141983156983159983151983154983147

O983152983141983154983137983156983151983154

C

983125983123E983122

A

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for different

layers

16 Alarm and performance events

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OTN Multiplexing and Mapping Structure

M983137983152983152983145983150983143

M983157983148983156983145983152983148983141983160983145983150983143

OD983124983125G3

OD983124983125G2

OC983144983154

OC983144983154

OC983144983154

OC983144

OC983144

OC983144

O9831249831253983131983126983133

O9831249831252983131983126983133

O9831249831251983131983126983133

C983148983145983141983150983156 983155983145983143983150983137983148

C983148983145983141983150983156 983155983145983143983150983137983148

OP9831253OD9831253

OCC983154

OCC983154

OCC983154

OCC

OCC

OCC

OCG983085983150983154983149

1 le 983145+983146+983147 le 983150

OCG983085983150983149

1 le 983145+983146+983147 le 983150

OP9831252OD9831252

times1OP9831251OD9831251

O983124M983085983150983154983149

O983124983123 OM983123 OC983144 COMM983123O983123C OO983123

O983124M983085983150983149

times4

times1

times1times4

times16times1

times1times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times 983145

times 983146

times 983147

times 983145

times 983146

times 1

C 983148 983145 983141 983150 983156 983155 983145 983143 983150 983137 983148

times1

O983124M9830850983149

times 983147

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OTN Multiplexing and Mapping Structure

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New OTN Multiplexing and Mapping Structure

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HO-ODULO-ODU CONCEPT

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HO-ODULO-ODU CONCEPT

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

7182019 OTN Basics

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Confidential

ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2391

1801201523 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2491

1801201524 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2591

1801201525 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

7182019 OTN Basics

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1801201526 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

7182019 OTN Basics

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1801201527 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2891

1801201528 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2991

1801201529 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3091

1801201530 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3191

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201532 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

7182019 OTN Basics

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1801201533 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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Confidential

bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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Confidential

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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Confidential

OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 6: OTN Basics

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Features of OTN

bull Compared with SDH and SONET networks an OTN network has the

following features

- Ultra capacity with high accuracy T-bitsecond per fiber over

DWDM lines- Service transparency for client signals

- Asynchronous mapping powerful FEC function simplified network

design and reduced costs

bull Compared with traditional WDM networks an OTN network has the

following features

- Enhanced OAM and networking capabilities for all services

- Dynamic electricaloptical-layer grooming

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OTN Standard System

983123983156983154983157983139983156983157983154983141

O983124N

O983124N 983150983141983156983159983151983154983147 983155983156983154983157983139983156983157983154983141G872

A983123ON 983150983141983156983159983151983154983147 983155983156983154983157983139983156983157983154983141G8080

983123983156983154983157983139983156983157983154983141 983137983150983140

983149983137983152983152983145983150983143

G983141983150983141983154983145983139 983142983154983137983149983141 983152983154983151983156983151983139983151983148 (GFP)G7041

L983145983150983147 983139983137983152983137983139983145983156983161 983137983140983146983157983155983156983149983141983150983156983155983139983144983141983149983141 (LCA983123) 983142983151983154 983158983145983154983156983157983137983148 983139983151983150983139983137983156983141983150983137983156983145983151983150 983155983145983143983150983137983148983155G7042

P983151983154983156983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G709

E983153983157983145983152983149983141983150983156

983142983157983150983139983156983145983151983150983155

983137983150983140

983142983141983137983156983157983154983141983155

F983141983137983156983157983154983141983155 983151983142 983142983157983150983139983156983145983151983150 983138983148983151983139983147983155 983151983142 983141983153983157983145983152983149983141983150983156 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G798

983124983154983137983150983155983152983151983154983156 983150983141983156983159983151983154983147 983141983153983157983145983152983149983141983150983156 983142983141983137983156983157983154983141983155 983140983141983155983139983154983145983152983156983145983151983150 983149983141983156983144983151983140983155 983137983150983140 983143983141983150983141983154983137983148 983142983157983150983139983156983145983151983150983155G806

P983144983161983155983145983139983137983148983085983148983137983161983141983154

983142983141983137983156983157983154983141983155O983152983156983145983139983137983148 983152983151983154983156983155 983142983151983154 983145983150983156983154983137983085983151983142983142983145983139983141 983155983161983155983156983141983149983155G693

O983152983156983145983139983137983148 983155983141983139983157983154983145983156983161 983154983157983148983141 983137983150983140 983154983141983153983157983145983154983141983149983141983150983156983155 983145983150 983137983150 983151983152983156983145983139983137983148 983156983154983137983150983155983152983151983154983156 983155983161983155983156983141983149G664

P983144983161983155983145983139983137983148983085983148983137983161983141983154 983152983151983154983156983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G9591

N983141983156983159983151983154983147

983152983154983151983156983141983139983156983145983151983150

L983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8731

983122983145983150983143 983152983154983151983156983141983139983156983145983151983150 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8732

J983145983156983156983141983154 983137983150983140

983152983141983154983142983151983154983149983137983150983139983141

J983145983156983156983141983154 983137983150983140 983155983144983145983142983156 983139983151983150983156983154983151983148 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8251

B983145983156 983141983154983154983151983154 983152983141983154983142983151983154983149983137983150983139983141 983152983137983154983137983149983141983156983141983154983155 983137983150983140 983155983152983141983139983145983142983145983139983137983156983145983151983150983155 983151983150

983145983150983156983141983154983150983137983156983145983151983150983137983148 983139983144983137983150983150983141983148983155 983151983142 983149983157983148983156983145983152983148983141 983139983137983154983154983145983141983154983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8201

E983153983157983145983152983149983141983150983156

983149983137983150983137983143983141983149983141983150983156

M983137983150983137983143983141983149983141983150983156 983142983141983137983156983157983154983141983155 983151983142 NE983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G874

O983124N 983150983141983156983159983151983154983147 P983154983151983156983151983139983151983148983085983150983141983157983156983154983137983148 983149983137983150983137983143983141983149983141983150983156983145983150983142983151983154983149983137983156983145983151983150 983149983151983140983141983148 983142983151983154 983156983144983141 983150983141983156983159983151983154983147 983141983148983141983149983141983150983156G8741

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Contents

11 OTN Introduction

12 OTN Port Structure13 MultiplexingMapping Principles and Bit

Rates

14 Overhead Description15 Maintenance Signals and Functions of

Different Layers

16 Alarms and Performance Events

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OTN Network Layers and Port Structure

bull OPUk optical channel payload unit-k

bull ODUk optical channel data unit-k

bull OTUk completely standardized optical

channel transport unit-k

bull OTUkV functionally standardized

Optical channel transport unit-k

bull OCh optical channel with full

functionalitybull OChr optical channel with reduced

functionality

bull OMS optical multiplex section

bull OTS optical transmission section

bull OPS optical physical section

bull OTM optical transport module

OD983125983147 (OD983125983147P 983137983150983140 OD983125983147983124)OP983125983147

O983124983125983147 O983124983125983147983126 O983124983125983147 O983124983125983147983126

OC983144 OC983144983154

OM983123983150

O983124983123983150OP983123983150

IPMPL983123 A983124M E983156983144983141983154983150983141983156 983123983124M983085N

O983124M9830850983149

O983124M983085983150983154983149

O983124M983085983150983149

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OTN TechnologyL983137983161983141983154983155 983151983142 983156983144983141 O983124N (G872 983151983150 983137983154983139983144983145983156983141983139983156983157983154983141 G709 983151983150 983142983154983137983149983141983155 983137983150983140 983142983151983154983149983137983156983155 G798 983151983150 983137983156983151983149983145983139

983142983157983150983139983156983145983151983150983155 983137983150983140 983152983154983151983139983141983155983155983141983155)

(983147 983101 983089983087983090983087983091983087983092 983142983151983154 983090983086983093983089983088983087983092983088983087983089983088983088983111983081

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OTN Ports

bull User to network interface (UNI)

bull Network node interface (NNI)

- Inter-domain interface (IrDI)

- Intra-domain interface (IaDI)

- Between equipment provided by different vendors (IrVI)

- Within subnet of one vendor (IaVI)

bull The completely standardized OTUk is used at OTM IrDIs and OTM IaDIs

bull The partly standardized OTUk is used at OTM IaDIs

O983124M

983125NI

O983124M NNI

I983137DI983085I983154983126I

O983124M NNI

I983137DI983085I983137983126I

O983124M NNII983137DI983085I983137983126I

N983141983156983159983151983154983147 O983152983141983154983137983156983151983154 B

983126983141983150983140983151983154983155 983128 983126983141983150983140983151983154983155 983129

O983124M

NNI

I983154DI

N983141983156983159983151983154983147

O983152983141983154983137983156983151983154

C

983125983123E983122

A

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for different

layers

16 Alarm and performance events

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Confidential

OTN Multiplexing and Mapping Structure

M983137983152983152983145983150983143

M983157983148983156983145983152983148983141983160983145983150983143

OD983124983125G3

OD983124983125G2

OC983144983154

OC983144983154

OC983144983154

OC983144

OC983144

OC983144

O9831249831253983131983126983133

O9831249831252983131983126983133

O9831249831251983131983126983133

C983148983145983141983150983156 983155983145983143983150983137983148

C983148983145983141983150983156 983155983145983143983150983137983148

OP9831253OD9831253

OCC983154

OCC983154

OCC983154

OCC

OCC

OCC

OCG983085983150983154983149

1 le 983145+983146+983147 le 983150

OCG983085983150983149

1 le 983145+983146+983147 le 983150

OP9831252OD9831252

times1OP9831251OD9831251

O983124M983085983150983154983149

O983124983123 OM983123 OC983144 COMM983123O983123C OO983123

O983124M983085983150983149

times4

times1

times1times4

times16times1

times1times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times 983145

times 983146

times 983147

times 983145

times 983146

times 1

C 983148 983145 983141 983150 983156 983155 983145 983143 983150 983137 983148

times1

O983124M9830850983149

times 983147

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Confidential

OTN Multiplexing and Mapping Structure

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Confidential

New OTN Multiplexing and Mapping Structure

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Confidential

HO-ODULO-ODU CONCEPT

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Confidential

HO-ODULO-ODU CONCEPT

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Confidential

OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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Confidential

ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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Confidential

OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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Confidential

P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

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Confidential

ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

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Confidential

ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

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ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

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Confidential

OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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Confidential

P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2991

1801201529 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

7182019 OTN Basics

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 7: OTN Basics

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Confidential

OTN Standard System

983123983156983154983157983139983156983157983154983141

O983124N

O983124N 983150983141983156983159983151983154983147 983155983156983154983157983139983156983157983154983141G872

A983123ON 983150983141983156983159983151983154983147 983155983156983154983157983139983156983157983154983141G8080

983123983156983154983157983139983156983157983154983141 983137983150983140

983149983137983152983152983145983150983143

G983141983150983141983154983145983139 983142983154983137983149983141 983152983154983151983156983151983139983151983148 (GFP)G7041

L983145983150983147 983139983137983152983137983139983145983156983161 983137983140983146983157983155983156983149983141983150983156983155983139983144983141983149983141 (LCA983123) 983142983151983154 983158983145983154983156983157983137983148 983139983151983150983139983137983156983141983150983137983156983145983151983150 983155983145983143983150983137983148983155G7042

P983151983154983156983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G709

E983153983157983145983152983149983141983150983156

983142983157983150983139983156983145983151983150983155

983137983150983140

983142983141983137983156983157983154983141983155

F983141983137983156983157983154983141983155 983151983142 983142983157983150983139983156983145983151983150 983138983148983151983139983147983155 983151983142 983141983153983157983145983152983149983141983150983156 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G798

983124983154983137983150983155983152983151983154983156 983150983141983156983159983151983154983147 983141983153983157983145983152983149983141983150983156 983142983141983137983156983157983154983141983155 983140983141983155983139983154983145983152983156983145983151983150 983149983141983156983144983151983140983155 983137983150983140 983143983141983150983141983154983137983148 983142983157983150983139983156983145983151983150983155G806

P983144983161983155983145983139983137983148983085983148983137983161983141983154

983142983141983137983156983157983154983141983155O983152983156983145983139983137983148 983152983151983154983156983155 983142983151983154 983145983150983156983154983137983085983151983142983142983145983139983141 983155983161983155983156983141983149983155G693

O983152983156983145983139983137983148 983155983141983139983157983154983145983156983161 983154983157983148983141 983137983150983140 983154983141983153983157983145983154983141983149983141983150983156983155 983145983150 983137983150 983151983152983156983145983139983137983148 983156983154983137983150983155983152983151983154983156 983155983161983155983156983141983149G664

P983144983161983155983145983139983137983148983085983148983137983161983141983154 983152983151983154983156983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G9591

N983141983156983159983151983154983147

983152983154983151983156983141983139983156983145983151983150

L983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8731

983122983145983150983143 983152983154983151983156983141983139983156983145983151983150 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8732

J983145983156983156983141983154 983137983150983140

983152983141983154983142983151983154983149983137983150983139983141

J983145983156983156983141983154 983137983150983140 983155983144983145983142983156 983139983151983150983156983154983151983148 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8251

B983145983156 983141983154983154983151983154 983152983141983154983142983151983154983149983137983150983139983141 983152983137983154983137983149983141983156983141983154983155 983137983150983140 983155983152983141983139983145983142983145983139983137983156983145983151983150983155 983151983150

983145983150983156983141983154983150983137983156983145983151983150983137983148 983139983144983137983150983150983141983148983155 983151983142 983149983157983148983156983145983152983148983141 983139983137983154983154983145983141983154983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G8201

E983153983157983145983152983149983141983150983156

983149983137983150983137983143983141983149983141983150983156

M983137983150983137983143983141983149983141983150983156 983142983141983137983156983157983154983141983155 983151983142 NE983155 983151983150 983137983150 O983124N 983150983141983156983159983151983154983147G874

O983124N 983150983141983156983159983151983154983147 P983154983151983156983151983139983151983148983085983150983141983157983156983154983137983148 983149983137983150983137983143983141983149983141983150983156983145983150983142983151983154983149983137983156983145983151983150 983149983151983140983141983148 983142983151983154 983156983144983141 983150983141983156983159983151983154983147 983141983148983141983149983141983150983156G8741

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Confidential

Contents

11 OTN Introduction

12 OTN Port Structure13 MultiplexingMapping Principles and Bit

Rates

14 Overhead Description15 Maintenance Signals and Functions of

Different Layers

16 Alarms and Performance Events

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Confidential

OTN Network Layers and Port Structure

bull OPUk optical channel payload unit-k

bull ODUk optical channel data unit-k

bull OTUk completely standardized optical

channel transport unit-k

bull OTUkV functionally standardized

Optical channel transport unit-k

bull OCh optical channel with full

functionalitybull OChr optical channel with reduced

functionality

bull OMS optical multiplex section

bull OTS optical transmission section

bull OPS optical physical section

bull OTM optical transport module

OD983125983147 (OD983125983147P 983137983150983140 OD983125983147983124)OP983125983147

O983124983125983147 O983124983125983147983126 O983124983125983147 O983124983125983147983126

OC983144 OC983144983154

OM983123983150

O983124983123983150OP983123983150

IPMPL983123 A983124M E983156983144983141983154983150983141983156 983123983124M983085N

O983124M9830850983149

O983124M983085983150983154983149

O983124M983085983150983149

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Confidential

OTN TechnologyL983137983161983141983154983155 983151983142 983156983144983141 O983124N (G872 983151983150 983137983154983139983144983145983156983141983139983156983157983154983141 G709 983151983150 983142983154983137983149983141983155 983137983150983140 983142983151983154983149983137983156983155 G798 983151983150 983137983156983151983149983145983139

983142983157983150983139983156983145983151983150983155 983137983150983140 983152983154983151983139983141983155983155983141983155)

(983147 983101 983089983087983090983087983091983087983092 983142983151983154 983090983086983093983089983088983087983092983088983087983089983088983088983111983081

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Confidential

OTN Ports

bull User to network interface (UNI)

bull Network node interface (NNI)

- Inter-domain interface (IrDI)

- Intra-domain interface (IaDI)

- Between equipment provided by different vendors (IrVI)

- Within subnet of one vendor (IaVI)

bull The completely standardized OTUk is used at OTM IrDIs and OTM IaDIs

bull The partly standardized OTUk is used at OTM IaDIs

O983124M

983125NI

O983124M NNI

I983137DI983085I983154983126I

O983124M NNI

I983137DI983085I983137983126I

O983124M NNII983137DI983085I983137983126I

N983141983156983159983151983154983147 O983152983141983154983137983156983151983154 B

983126983141983150983140983151983154983155 983128 983126983141983150983140983151983154983155 983129

O983124M

NNI

I983154DI

N983141983156983159983151983154983147

O983152983141983154983137983156983151983154

C

983125983123E983122

A

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for different

layers

16 Alarm and performance events

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Confidential

OTN Multiplexing and Mapping Structure

M983137983152983152983145983150983143

M983157983148983156983145983152983148983141983160983145983150983143

OD983124983125G3

OD983124983125G2

OC983144983154

OC983144983154

OC983144983154

OC983144

OC983144

OC983144

O9831249831253983131983126983133

O9831249831252983131983126983133

O9831249831251983131983126983133

C983148983145983141983150983156 983155983145983143983150983137983148

C983148983145983141983150983156 983155983145983143983150983137983148

OP9831253OD9831253

OCC983154

OCC983154

OCC983154

OCC

OCC

OCC

OCG983085983150983154983149

1 le 983145+983146+983147 le 983150

OCG983085983150983149

1 le 983145+983146+983147 le 983150

OP9831252OD9831252

times1OP9831251OD9831251

O983124M983085983150983154983149

O983124983123 OM983123 OC983144 COMM983123O983123C OO983123

O983124M983085983150983149

times4

times1

times1times4

times16times1

times1times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times 983145

times 983146

times 983147

times 983145

times 983146

times 1

C 983148 983145 983141 983150 983156 983155 983145 983143 983150 983137 983148

times1

O983124M9830850983149

times 983147

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Confidential

OTN Multiplexing and Mapping Structure

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Confidential

New OTN Multiplexing and Mapping Structure

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Confidential

HO-ODULO-ODU CONCEPT

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Confidential

HO-ODULO-ODU CONCEPT

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Confidential

OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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Confidential

ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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Confidential

OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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Confidential

P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

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Confidential

ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

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Confidential

ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

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ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

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OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

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Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

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Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3591

1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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1801201536 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3791

1801201537 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3891

1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

7182019 OTN Basics

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1801201539 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

7182019 OTN Basics

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1801201540 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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1801201541 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

7182019 OTN Basics

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Confidential

7182019 OTN Basics

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

7182019 OTN Basics

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1801201544 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 4591

1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

7182019 OTN Basics

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1801201546 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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Contents

11 OTN Introduction

12 OTN Port Structure13 MultiplexingMapping Principles and Bit

Rates

14 Overhead Description15 Maintenance Signals and Functions of

Different Layers

16 Alarms and Performance Events

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OTN Network Layers and Port Structure

bull OPUk optical channel payload unit-k

bull ODUk optical channel data unit-k

bull OTUk completely standardized optical

channel transport unit-k

bull OTUkV functionally standardized

Optical channel transport unit-k

bull OCh optical channel with full

functionalitybull OChr optical channel with reduced

functionality

bull OMS optical multiplex section

bull OTS optical transmission section

bull OPS optical physical section

bull OTM optical transport module

OD983125983147 (OD983125983147P 983137983150983140 OD983125983147983124)OP983125983147

O983124983125983147 O983124983125983147983126 O983124983125983147 O983124983125983147983126

OC983144 OC983144983154

OM983123983150

O983124983123983150OP983123983150

IPMPL983123 A983124M E983156983144983141983154983150983141983156 983123983124M983085N

O983124M9830850983149

O983124M983085983150983154983149

O983124M983085983150983149

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OTN TechnologyL983137983161983141983154983155 983151983142 983156983144983141 O983124N (G872 983151983150 983137983154983139983144983145983156983141983139983156983157983154983141 G709 983151983150 983142983154983137983149983141983155 983137983150983140 983142983151983154983149983137983156983155 G798 983151983150 983137983156983151983149983145983139

983142983157983150983139983156983145983151983150983155 983137983150983140 983152983154983151983139983141983155983155983141983155)

(983147 983101 983089983087983090983087983091983087983092 983142983151983154 983090983086983093983089983088983087983092983088983087983089983088983088983111983081

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OTN Ports

bull User to network interface (UNI)

bull Network node interface (NNI)

- Inter-domain interface (IrDI)

- Intra-domain interface (IaDI)

- Between equipment provided by different vendors (IrVI)

- Within subnet of one vendor (IaVI)

bull The completely standardized OTUk is used at OTM IrDIs and OTM IaDIs

bull The partly standardized OTUk is used at OTM IaDIs

O983124M

983125NI

O983124M NNI

I983137DI983085I983154983126I

O983124M NNI

I983137DI983085I983137983126I

O983124M NNII983137DI983085I983137983126I

N983141983156983159983151983154983147 O983152983141983154983137983156983151983154 B

983126983141983150983140983151983154983155 983128 983126983141983150983140983151983154983155 983129

O983124M

NNI

I983154DI

N983141983156983159983151983154983147

O983152983141983154983137983156983151983154

C

983125983123E983122

A

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for different

layers

16 Alarm and performance events

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OTN Multiplexing and Mapping Structure

M983137983152983152983145983150983143

M983157983148983156983145983152983148983141983160983145983150983143

OD983124983125G3

OD983124983125G2

OC983144983154

OC983144983154

OC983144983154

OC983144

OC983144

OC983144

O9831249831253983131983126983133

O9831249831252983131983126983133

O9831249831251983131983126983133

C983148983145983141983150983156 983155983145983143983150983137983148

C983148983145983141983150983156 983155983145983143983150983137983148

OP9831253OD9831253

OCC983154

OCC983154

OCC983154

OCC

OCC

OCC

OCG983085983150983154983149

1 le 983145+983146+983147 le 983150

OCG983085983150983149

1 le 983145+983146+983147 le 983150

OP9831252OD9831252

times1OP9831251OD9831251

O983124M983085983150983154983149

O983124983123 OM983123 OC983144 COMM983123O983123C OO983123

O983124M983085983150983149

times4

times1

times1times4

times16times1

times1times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times 983145

times 983146

times 983147

times 983145

times 983146

times 1

C 983148 983145 983141 983150 983156 983155 983145 983143 983150 983137 983148

times1

O983124M9830850983149

times 983147

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OTN Multiplexing and Mapping Structure

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New OTN Multiplexing and Mapping Structure

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HO-ODULO-ODU CONCEPT

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HO-ODULO-ODU CONCEPT

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

7182019 OTN Basics

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Confidential

ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2391

1801201523 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

7182019 OTN Basics

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1801201524 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2591

1801201525 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

7182019 OTN Basics

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1801201526 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

7182019 OTN Basics

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1801201527 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2891

1801201528 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2991

1801201529 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3091

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3191

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201532 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

7182019 OTN Basics

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1801201533 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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1801201536 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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1801201546 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 9: OTN Basics

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OTN Network Layers and Port Structure

bull OPUk optical channel payload unit-k

bull ODUk optical channel data unit-k

bull OTUk completely standardized optical

channel transport unit-k

bull OTUkV functionally standardized

Optical channel transport unit-k

bull OCh optical channel with full

functionalitybull OChr optical channel with reduced

functionality

bull OMS optical multiplex section

bull OTS optical transmission section

bull OPS optical physical section

bull OTM optical transport module

OD983125983147 (OD983125983147P 983137983150983140 OD983125983147983124)OP983125983147

O983124983125983147 O983124983125983147983126 O983124983125983147 O983124983125983147983126

OC983144 OC983144983154

OM983123983150

O983124983123983150OP983123983150

IPMPL983123 A983124M E983156983144983141983154983150983141983156 983123983124M983085N

O983124M9830850983149

O983124M983085983150983154983149

O983124M983085983150983149

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OTN TechnologyL983137983161983141983154983155 983151983142 983156983144983141 O983124N (G872 983151983150 983137983154983139983144983145983156983141983139983156983157983154983141 G709 983151983150 983142983154983137983149983141983155 983137983150983140 983142983151983154983149983137983156983155 G798 983151983150 983137983156983151983149983145983139

983142983157983150983139983156983145983151983150983155 983137983150983140 983152983154983151983139983141983155983155983141983155)

(983147 983101 983089983087983090983087983091983087983092 983142983151983154 983090983086983093983089983088983087983092983088983087983089983088983088983111983081

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OTN Ports

bull User to network interface (UNI)

bull Network node interface (NNI)

- Inter-domain interface (IrDI)

- Intra-domain interface (IaDI)

- Between equipment provided by different vendors (IrVI)

- Within subnet of one vendor (IaVI)

bull The completely standardized OTUk is used at OTM IrDIs and OTM IaDIs

bull The partly standardized OTUk is used at OTM IaDIs

O983124M

983125NI

O983124M NNI

I983137DI983085I983154983126I

O983124M NNI

I983137DI983085I983137983126I

O983124M NNII983137DI983085I983137983126I

N983141983156983159983151983154983147 O983152983141983154983137983156983151983154 B

983126983141983150983140983151983154983155 983128 983126983141983150983140983151983154983155 983129

O983124M

NNI

I983154DI

N983141983156983159983151983154983147

O983152983141983154983137983156983151983154

C

983125983123E983122

A

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for different

layers

16 Alarm and performance events

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OTN Multiplexing and Mapping Structure

M983137983152983152983145983150983143

M983157983148983156983145983152983148983141983160983145983150983143

OD983124983125G3

OD983124983125G2

OC983144983154

OC983144983154

OC983144983154

OC983144

OC983144

OC983144

O9831249831253983131983126983133

O9831249831252983131983126983133

O9831249831251983131983126983133

C983148983145983141983150983156 983155983145983143983150983137983148

C983148983145983141983150983156 983155983145983143983150983137983148

OP9831253OD9831253

OCC983154

OCC983154

OCC983154

OCC

OCC

OCC

OCG983085983150983154983149

1 le 983145+983146+983147 le 983150

OCG983085983150983149

1 le 983145+983146+983147 le 983150

OP9831252OD9831252

times1OP9831251OD9831251

O983124M983085983150983154983149

O983124983123 OM983123 OC983144 COMM983123O983123C OO983123

O983124M983085983150983149

times4

times1

times1times4

times16times1

times1times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times 983145

times 983146

times 983147

times 983145

times 983146

times 1

C 983148 983145 983141 983150 983156 983155 983145 983143 983150 983137 983148

times1

O983124M9830850983149

times 983147

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OTN Multiplexing and Mapping Structure

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New OTN Multiplexing and Mapping Structure

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HO-ODULO-ODU CONCEPT

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HO-ODULO-ODU CONCEPT

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2291

1801201522 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2391

1801201523 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2491

1801201524 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2591

1801201525 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

7182019 OTN Basics

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1801201526 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2791

1801201527 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2891

1801201528 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2991

1801201529 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3091

1801201530 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3191

1801201531 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201532 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

7182019 OTN Basics

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1801201533 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

7182019 OTN Basics

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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Confidential

bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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Confidential

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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Confidential

OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 10: OTN Basics

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OTN TechnologyL983137983161983141983154983155 983151983142 983156983144983141 O983124N (G872 983151983150 983137983154983139983144983145983156983141983139983156983157983154983141 G709 983151983150 983142983154983137983149983141983155 983137983150983140 983142983151983154983149983137983156983155 G798 983151983150 983137983156983151983149983145983139

983142983157983150983139983156983145983151983150983155 983137983150983140 983152983154983151983139983141983155983155983141983155)

(983147 983101 983089983087983090983087983091983087983092 983142983151983154 983090983086983093983089983088983087983092983088983087983089983088983088983111983081

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OTN Ports

bull User to network interface (UNI)

bull Network node interface (NNI)

- Inter-domain interface (IrDI)

- Intra-domain interface (IaDI)

- Between equipment provided by different vendors (IrVI)

- Within subnet of one vendor (IaVI)

bull The completely standardized OTUk is used at OTM IrDIs and OTM IaDIs

bull The partly standardized OTUk is used at OTM IaDIs

O983124M

983125NI

O983124M NNI

I983137DI983085I983154983126I

O983124M NNI

I983137DI983085I983137983126I

O983124M NNII983137DI983085I983137983126I

N983141983156983159983151983154983147 O983152983141983154983137983156983151983154 B

983126983141983150983140983151983154983155 983128 983126983141983150983140983151983154983155 983129

O983124M

NNI

I983154DI

N983141983156983159983151983154983147

O983152983141983154983137983156983151983154

C

983125983123E983122

A

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for different

layers

16 Alarm and performance events

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OTN Multiplexing and Mapping Structure

M983137983152983152983145983150983143

M983157983148983156983145983152983148983141983160983145983150983143

OD983124983125G3

OD983124983125G2

OC983144983154

OC983144983154

OC983144983154

OC983144

OC983144

OC983144

O9831249831253983131983126983133

O9831249831252983131983126983133

O9831249831251983131983126983133

C983148983145983141983150983156 983155983145983143983150983137983148

C983148983145983141983150983156 983155983145983143983150983137983148

OP9831253OD9831253

OCC983154

OCC983154

OCC983154

OCC

OCC

OCC

OCG983085983150983154983149

1 le 983145+983146+983147 le 983150

OCG983085983150983149

1 le 983145+983146+983147 le 983150

OP9831252OD9831252

times1OP9831251OD9831251

O983124M983085983150983154983149

O983124983123 OM983123 OC983144 COMM983123O983123C OO983123

O983124M983085983150983149

times4

times1

times1times4

times16times1

times1times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times 983145

times 983146

times 983147

times 983145

times 983146

times 1

C 983148 983145 983141 983150 983156 983155 983145 983143 983150 983137 983148

times1

O983124M9830850983149

times 983147

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OTN Multiplexing and Mapping Structure

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New OTN Multiplexing and Mapping Structure

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HO-ODULO-ODU CONCEPT

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HO-ODULO-ODU CONCEPT

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

7182019 OTN Basics

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Confidential

ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2391

1801201523 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

7182019 OTN Basics

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Confidential

ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

7182019 OTN Basics

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1801201525 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

7182019 OTN Basics

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1801201526 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

7182019 OTN Basics

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Confidential

P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

7182019 OTN Basics

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Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2991

1801201529 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

7182019 OTN Basics

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1801201531 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201532 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

7182019 OTN Basics

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1801201533 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

7182019 OTN Basics

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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1801201536 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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1801201537 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

7182019 OTN Basics

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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Confidential

bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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Confidential

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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Confidential

OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 11: OTN Basics

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OTN Ports

bull User to network interface (UNI)

bull Network node interface (NNI)

- Inter-domain interface (IrDI)

- Intra-domain interface (IaDI)

- Between equipment provided by different vendors (IrVI)

- Within subnet of one vendor (IaVI)

bull The completely standardized OTUk is used at OTM IrDIs and OTM IaDIs

bull The partly standardized OTUk is used at OTM IaDIs

O983124M

983125NI

O983124M NNI

I983137DI983085I983154983126I

O983124M NNI

I983137DI983085I983137983126I

O983124M NNII983137DI983085I983137983126I

N983141983156983159983151983154983147 O983152983141983154983137983156983151983154 B

983126983141983150983140983151983154983155 983128 983126983141983150983140983151983154983155 983129

O983124M

NNI

I983154DI

N983141983156983159983151983154983147

O983152983141983154983137983156983151983154

C

983125983123E983122

A

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for different

layers

16 Alarm and performance events

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OTN Multiplexing and Mapping Structure

M983137983152983152983145983150983143

M983157983148983156983145983152983148983141983160983145983150983143

OD983124983125G3

OD983124983125G2

OC983144983154

OC983144983154

OC983144983154

OC983144

OC983144

OC983144

O9831249831253983131983126983133

O9831249831252983131983126983133

O9831249831251983131983126983133

C983148983145983141983150983156 983155983145983143983150983137983148

C983148983145983141983150983156 983155983145983143983150983137983148

OP9831253OD9831253

OCC983154

OCC983154

OCC983154

OCC

OCC

OCC

OCG983085983150983154983149

1 le 983145+983146+983147 le 983150

OCG983085983150983149

1 le 983145+983146+983147 le 983150

OP9831252OD9831252

times1OP9831251OD9831251

O983124M983085983150983154983149

O983124983123 OM983123 OC983144 COMM983123O983123C OO983123

O983124M983085983150983149

times4

times1

times1times4

times16times1

times1times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times 983145

times 983146

times 983147

times 983145

times 983146

times 1

C 983148 983145 983141 983150 983156 983155 983145 983143 983150 983137 983148

times1

O983124M9830850983149

times 983147

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OTN Multiplexing and Mapping Structure

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New OTN Multiplexing and Mapping Structure

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HO-ODULO-ODU CONCEPT

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HO-ODULO-ODU CONCEPT

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

7182019 OTN Basics

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Confidential

ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2391

1801201523 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

7182019 OTN Basics

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Confidential

ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

7182019 OTN Basics

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1801201525 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

7182019 OTN Basics

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1801201526 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

7182019 OTN Basics

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Confidential

P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

7182019 OTN Basics

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Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

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1801201529 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

7182019 OTN Basics

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1801201531 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201532 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

7182019 OTN Basics

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1801201533 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

7182019 OTN Basics

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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1801201536 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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1801201537 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

7182019 OTN Basics

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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Confidential

bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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Confidential

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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Confidential

OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 12: OTN Basics

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for different

layers

16 Alarm and performance events

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OTN Multiplexing and Mapping Structure

M983137983152983152983145983150983143

M983157983148983156983145983152983148983141983160983145983150983143

OD983124983125G3

OD983124983125G2

OC983144983154

OC983144983154

OC983144983154

OC983144

OC983144

OC983144

O9831249831253983131983126983133

O9831249831252983131983126983133

O9831249831251983131983126983133

C983148983145983141983150983156 983155983145983143983150983137983148

C983148983145983141983150983156 983155983145983143983150983137983148

OP9831253OD9831253

OCC983154

OCC983154

OCC983154

OCC

OCC

OCC

OCG983085983150983154983149

1 le 983145+983146+983147 le 983150

OCG983085983150983149

1 le 983145+983146+983147 le 983150

OP9831252OD9831252

times1OP9831251OD9831251

O983124M983085983150983154983149

O983124983123 OM983123 OC983144 COMM983123O983123C OO983123

O983124M983085983150983149

times4

times1

times1times4

times16times1

times1times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times 983145

times 983146

times 983147

times 983145

times 983146

times 1

C 983148 983145 983141 983150 983156 983155 983145 983143 983150 983137 983148

times1

O983124M9830850983149

times 983147

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OTN Multiplexing and Mapping Structure

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New OTN Multiplexing and Mapping Structure

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HO-ODULO-ODU CONCEPT

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HO-ODULO-ODU CONCEPT

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

7182019 OTN Basics

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Confidential

ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2391

1801201523 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2491

1801201524 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2591

1801201525 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

7182019 OTN Basics

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1801201526 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2791

1801201527 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2891

1801201528 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2991

1801201529 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3091

1801201530 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

7182019 OTN Basics

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201532 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

7182019 OTN Basics

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1801201533 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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Confidential

bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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Confidential

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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Confidential

OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 13: OTN Basics

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OTN Multiplexing and Mapping Structure

M983137983152983152983145983150983143

M983157983148983156983145983152983148983141983160983145983150983143

OD983124983125G3

OD983124983125G2

OC983144983154

OC983144983154

OC983144983154

OC983144

OC983144

OC983144

O9831249831253983131983126983133

O9831249831252983131983126983133

O9831249831251983131983126983133

C983148983145983141983150983156 983155983145983143983150983137983148

C983148983145983141983150983156 983155983145983143983150983137983148

OP9831253OD9831253

OCC983154

OCC983154

OCC983154

OCC

OCC

OCC

OCG983085983150983154983149

1 le 983145+983146+983147 le 983150

OCG983085983150983149

1 le 983145+983146+983147 le 983150

OP9831252OD9831252

times1OP9831251OD9831251

O983124M983085983150983154983149

O983124983123 OM983123 OC983144 COMM983123O983123C OO983123

O983124M983085983150983149

times4

times1

times1times4

times16times1

times1times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times1

times 983145

times 983146

times 983147

times 983145

times 983146

times 1

C 983148 983145 983141 983150 983156 983155 983145 983143 983150 983137 983148

times1

O983124M9830850983149

times 983147

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OTN Multiplexing and Mapping Structure

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New OTN Multiplexing and Mapping Structure

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HO-ODULO-ODU CONCEPT

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HO-ODULO-ODU CONCEPT

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2291

1801201522 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2391

1801201523 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2491

1801201524 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2591

1801201525 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

7182019 OTN Basics

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1801201526 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

7182019 OTN Basics

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1801201527 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2891

1801201528 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2991

1801201529 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3091

1801201530 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3191

1801201531 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201532 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

7182019 OTN Basics

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1801201533 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

7182019 OTN Basics

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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1801201536 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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1801201537 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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1801201546 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 14: OTN Basics

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OTN Multiplexing and Mapping Structure

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New OTN Multiplexing and Mapping Structure

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HO-ODULO-ODU CONCEPT

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HO-ODULO-ODU CONCEPT

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

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ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

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ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

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ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

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OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

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Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3691

1801201536 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3791

1801201537 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3891

1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3991

1801201539 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

7182019 OTN Basics

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1801201540 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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1801201541 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

7182019 OTN Basics

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1801201542 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

7182019 OTN Basics

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1801201543 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 4491

1801201544 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 4591

1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

7182019 OTN Basics

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1801201546 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

7182019 OTN Basics

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1801201547 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Confidential

Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 15: OTN Basics

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New OTN Multiplexing and Mapping Structure

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HO-ODULO-ODU CONCEPT

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HO-ODULO-ODU CONCEPT

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

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ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

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ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

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ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

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OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2891

1801201528 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2991

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Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

7182019 OTN Basics

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1801201539 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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1801201541 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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HO-ODULO-ODU CONCEPT

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HO-ODULO-ODU CONCEPT

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

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ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

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ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

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ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

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OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2991

1801201529 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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1801201531 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

7182019 OTN Basics

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 17: OTN Basics

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HO-ODULO-ODU CONCEPT

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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Confidential

P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

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ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

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ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

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ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

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OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

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Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

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Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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1801201531 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201532 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

7182019 OTN Basics

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1801201533 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

7182019 OTN Basics

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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1801201536 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

7182019 OTN Basics

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Confidential

Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Confidential

Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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Confidential

bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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Confidential

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 18: OTN Basics

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OTUk Frame Rate

OTU Type OTU Nominal Bit Rate OTU Bit Rate Tolerance

OTU1 255238 x 2488320 kbits

plusmnplusmnplusmnplusmn20 ppm

OTU2 255237 x 9953280 kbits

OTU3 255236 x 39813120 kbits

OTU4 255227 x 99532800 kbits

Note 1 The nominal OTUk rates are approximately 2666057143 kbits (OTU1) 10709225316

kbits (OTU2) 43018413559 kbits (OTU3) and 111809 973568 kbits (OTU4)Note 2 OTU0 OTU2e and OTUflex are not specified in this recommendation ODU0 signals

are transported over ODU1 ODU2 ODU3 or ODU4 signals ODU2e signals are transported

over ODU3 and ODU4 signals and ODUflex signals are transported over ODU2 ODU3 and

ODU4 signals

O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141O983124983125983147 983154983137983156983141 = 255(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2291

1801201522 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2391

1801201523 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2491

1801201524 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2591

1801201525 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

7182019 OTN Basics

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1801201526 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

7182019 OTN Basics

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1801201527 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2891

1801201528 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2991

1801201529 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3091

1801201530 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3191

1801201531 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201532 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

7182019 OTN Basics

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1801201533 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

7182019 OTN Basics

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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1801201536 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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1801201537 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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1801201546 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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ODUk Frame Rate

ODU Type ODU Nominal Bit Rate ODU Bit Rate Tolerance

ODU0 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

ODU1 239238 x 2488320 kbits

ODU2 239237 x 9953280 kbits

ODU3 239236 x 39813120 kbits

ODU4 239227 x 99532800 kbits

ODU2e 239237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

ODUflex for CBR

client signals

239238 x Client signal bit rate Client signal bit rate tolerance with a

maximum of plusmnplusmnplusmnplusmn100 ppm

ODUflex for GFP-F

mapped client

signals

Pre-set bit rate plusmnplusmnplusmnplusmn20 ppm

Note The nominal ODUk rates are approximately 2498775126 kbits (ODU1) 10037273924 kbits

(ODU2) 40319218983 kbits (ODU3) 104794445815 kbits (ODU4) and 10399525316 kbits

(ODU2e)

OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OD983125983147 983154983137983156983141 = 239(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

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ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

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ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

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ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

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OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

7182019 OTN Basics

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1801201526 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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Confidential

P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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1801201528 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

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Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3891

1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3991

1801201539 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 4091

1801201540 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 4191

1801201541 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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1801201542 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

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1801201543 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

7182019 OTN Basics

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1801201544 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

7182019 OTN Basics

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1801201546 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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1801201547 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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OPUk Frame Rate

OPU Type OPU Payload Nominal Bit Rate OPU Payload Bit Rate Tolerance

OPU0 238239 x 1244160 kbits

plusmnplusmnplusmnplusmn20 ppm

OPU1 2488320 kbits

OPU2 238237 x 9953280 kbits

OPU3 238236 x 39813120 kbits

OPU4 238227 x 99532800 kbits

OPU2e 238237 x 10312500 kbits plusmnplusmnplusmnplusmn100 ppm

OPUflex for CBR clientsignals

Client signal bit rate Client signal bit rate tolerance with amaximum of plusmnplusmnplusmnplusmn100 ppm

OPUflex for GFP-Fmapped client signals

238239 x ODUflex signal rate plusmnplusmnplusmnplusmn20 ppm

OPU1-Xv X x 2 488 320 kbits

plusmnplusmnplusmnplusmn20 ppmOPU2-Xv X x 238237 x 9953280 kbits

OPU3-Xv X x 238236 x 39813120 kbits

Note The nominal OPUk payload rates are approximately 1238954310 kbits (OPU0 Payload) 2488320000 kbits(OPU1 payload) 9995276962 kbits (OPU2 payload) 40150519322 kbits (OPU3 payload) 104355975330 (OPU4payload) and 10356012658 kbits (OPU2e payload) The nominal OPUk-Xv payload rates are approximately X x2488320000 kbits (OPU1-Xv payload) X x 9995276962 kbits (OPU2-Xv payload) and X x 40150519322 kbits(OPU3-Xv payload)

OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141OP983125983147 983152983137983161983148983151983137983140 983154983137983156983141 = 238(239 983085 983147) 983160 983123983124M983085N 983142983154983137983149983141 983154983137983156983141

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

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ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

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ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

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ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

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OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2991

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Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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1801201531 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

7182019 OTN Basics

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

7182019 OTN Basics

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 21: OTN Basics

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P983137983143983141 13

M983137983152983152983145983150983143 983151983142 10GE

983148 H983157983137983159983141983145 983152983154983151983158983145983140983141983155 983156983144983154983141983141 983149983137983152983152983145983150983143 983149983141983156983144983151983140983155 983159983145983156983144 983151983150983141 983156983154983137983150983155983152983151983150983140983141983154 983138983157983156 983140983145983142983142983141983154983141983150983156 983155983151983142983156983159983137983154983141 983139983151983150983142983145983143983157983154983137983156983145983151983150983155

983148 F983151983154 983149983157983148983156983145983152983148983141 983156983154983137983150983155983149983145983155983155983145983151983150 983155983152983137983150983155 983137983150983140 983155983157983142983142983145983139983145983141983150983156 O983123N983122 983149983141983156983144983151983140 3 983145983155 983137983152983152983148983145983139983137983138983148983141

983148 M983141983156983144983151983140983155 1983137983150983140 2 983137983154983141 983149983151983155983156 983155983157983145983156983137983138983148983141 983142983151983154 983148983145983149983145983156983141983140 O983123N983122 983137983148983148983151983159983137983150983139983141

983148 M983141983156983144983151983140 1 983145983155 983151983150983148983161 983142983151983154 10GE LAN PH983129 983142983157983148983148 983156983154983137983150983155983152983137983154983141983150983156 983156983154983137983150983155983152983151983154983156

10GE LAN

OD9831252 983139983137983150983150983151983156 983149983137983156983139983144 10GE LAN PH983129

OH 9995G983138983152983155 FEC

103125G983138983152983155

B983151983151983155983156983141983140 983148983145983150983141 983154983137983156983141 111G983138983145983156983155

OH FEC

103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983145983149983152983148983141 983137983150983140 983156983154983137983150983155983152983137983154983141983150983156991266N983151983150983085983155983156983137983150983140983137983154983140 OD9831252

OH 9995 G983138983145983156983155 FEC

9995 G983138983145983156983155

F983148983151983159 983139983151983150983156983154983151983148 983156983154983137983150983155983149983145983155983155983145983151983150

991266983123983156983137983150983140983137983154983140 OD983125 9830852

991266L983145983149983145983156983141983140 983149983137983160983145983149983157983149 983156983144983154983151983157983143983144983152983157983156

O983139983139983157983152983145983141983140 FEC 983143983137983145983150

OH FEC103125 G983138983145983156983155

103125 G983138983145983156983155

991266983123983156983137983150983140983137983154983140 OD983125 9830852991266N983151983150983085983155983156983137983150983140983137983154983140 FEC 983138983161983156983141983155

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2291

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Confidential

ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2391

1801201523 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2491

1801201524 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2591

1801201525 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

7182019 OTN Basics

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1801201526 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

7182019 OTN Basics

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1801201527 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2891

1801201528 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2991

1801201529 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3091

1801201530 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3191

1801201531 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201532 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

7182019 OTN Basics

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1801201533 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

7182019 OTN Basics

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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1801201536 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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1801201537 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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1801201546 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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Confidential

bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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ODU1 Multiplexed into ODU2

bull ODTU12 optical channel data tributary unit 1 into 2

bull ODTUG2 optical channel data tributary unit group 2

bull JOH justification overhead

OD9831251

OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312512

JOH OD9831251 OD98312498312512

OD9831252

OH

OP9831252

OH

OD9831252 983152983137983161983148983151983137983140

OP9831252

OD9831252

OD98312498312512

JOH OD9831251

OD98312498312512

JOH OD9831251 OD983124983125G2

OD983124983125G2

OP9831252 983152983137983161983148983151983137983140

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ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

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ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

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OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2991

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Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 23: OTN Basics

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ODU1 Multiplexed into ODU2

bull ODU1 floats in one quarter of the OPU2 payload area

bull An ODU1 frame travels cross multiple ODU2 frame boundaries

O9831249831252 O9831249831252FEC

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251

OD9831251OH

A983148983145983143983150983149983141983150983156

OD9831252

9831604

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OHOD9831252 OH

O P 983125 2 O H

OP9831252 P983137983161983148983151983137983140OD9831252 OH

A983148983145983143983150983149983141983150983156

O P 983125 2 O H

O9831249831252

OH

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156 L983137983161983141983154 983123983145983143983150983137983148(983142983151983154 983141983160983137983149983152983148983141 983123983124M98308516)OD9831251 OH

O P 983125 1 O H

C983148983145983141983150983156983085983148983137983161983141983154 983155983145983143983150983137983148

(983123983124M98308516 A983124M 983151983154 GFP)OD9831251 OH

O P 983125 1 O H

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

O P 983125 1 O H

O P 983125 1 O H

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ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

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OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

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Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3691

1801201536 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3791

1801201537 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3891

1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3991

1801201539 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

7182019 OTN Basics

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1801201540 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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1801201541 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

7182019 OTN Basics

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1801201542 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

7182019 OTN Basics

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1801201543 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 4491

1801201544 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 4591

1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

7182019 OTN Basics

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1801201546 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

7182019 OTN Basics

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1801201547 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Confidential

Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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ODU1 and ODU2 Multiplexed into ODU3

bull ODTU23 optical channel data tributary unit 2 into 3

bull ODTU13 optical channel data tributary unit 1 into 3

OD9831251OH OD9831251OD9831251 983152983137983161983148983151983137983140

OD98312498312513JOH

OD9831251 OD98312498312513

OD9831253OH

OP9831253OH

OD9831253 983152983137983161983148983151983137983140

OP9831253

OD9831253

OD98312498312523JOH

OD98312498312523JOH

OD9831251 OD983124983125G3

OD983124983125G3

OP9831253 983152983137983161983148983151983137983140

OD9831252OH OD9831252OD9831252 983152983137983161983148983151983137983140

OD98312498312523JOH

OD9831252 OD98312498312523

OD98312498312513JOH

OD9831252OD98312498312513JOH

OD9831252 OD9831251

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OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

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Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

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Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201532 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

7182019 OTN Basics

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1801201533 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

7182019 OTN Basics

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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Confidential

bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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Confidential

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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Confidential

OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 25: OTN Basics

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Confidential

OD983125983142983148983141983160

OH

OH983123983141983154983158983145983139983141983155 983159983145983156983144

983137 983142983145983160983141983140 983138983145983156 983154983137983156983141

C983148983145983141983150983156 983155983145983143983150983137983148983155

P983137983139983147983141983156 983155983141983154983158983145983139983141983155

C983148983145983141983150983156 983155983141983154983158983145983139983141983155

OH

GMP983124983123983145 983124983123983146

OD983125983142983148983141983160

OHBMP

983124983123983145 983124983123983146

GMP

GFP

M983137983152 CB983122 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 983155983161983150983139983144983154983151983150983145983162983141983140 983152983137983139983147983141983156 983141983150983139983137983152983155983157983148983137983156983145983151983150 M983137983152 983152983137983139983147983141983156 983155983141983154983158983145983139983141983155 983156983151 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GFP

M983137983152 OD983125983142983148983141983160 983155983141983154983158983145983139983141983155 983156983151 HO OP983125983147 983155983141983154983158983145983139983141983155 983157983155983145983150983143 GMP

ODUflex

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

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Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3091

1801201530 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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httpslidepdfcomreaderfullotn-basics 3191

1801201531 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

7182019 OTN Basics

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

7182019 OTN Basics

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Confidential

Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Confidential

Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 26: OTN Basics

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

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P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 2991

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Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

7182019 OTN Basics

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 27: OTN Basics

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P98313798314398314127

OTN Frame Formats (k = 1 2 or 3)

3 8 2 5

4 0 8 0

1 7 8 1 4

1 5

1 6

1 7

3 8 2 4

1

2

3

4

OP983125 983147 983152983137983161983148983151983137983140

O P 983125

983147 O H

OP983125983147 983085 983151983152983156983145983139983137983148 983139983144983137983150983150983141983148 983152983137983161983148983151983137983140 983157983150983145983156

OD983125983147

OH

OD983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 D983137983156983137 983125983150983145983156

C983148983145983141983150983156 983155983145983143983150983137983148

983149983137983152983152983141983140 983145983150OP983125983147 983152983137983161983148983151983137983140

C983148983145983141983150983156 983155983145983143983150983137983148

O983124983125K

FEC

O983124983125983147

OH

O983124983125983147 983085 O983152983156983145983139983137983148 C983144983137983150983150983141983148 983124983154983137983150983155983152983151983154983156 983125983150983145983156

A983148983145983143983150983149983141983150983156

A983148983145983143983150983149983141983150983156

K

1 983085 25G

2 983085 10G

3 983085 40G

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OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

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httpslidepdfcomreaderfullotn-basics 2991

1801201529 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

7182019 OTN Basics

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

7182019 OTN Basics

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 28: OTN Basics

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Confidential

OTN Electrical Overhead Overview

OD983125983147 OH 983124CMAC983124 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

983124CM983145 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983145

F983124FL 983142983137983157983148983156 983156983161983152983141 983137983150983140 983142983137983157983148983156 983148983151983139983137983156983145983151983150 983154983141983152983151983154983156983145983150983143

983139983144983137983150983150983141983148

PM 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143

E983128P 983141983160983152983141983154983145983149983141983150983156983137983148

GCC12 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 12

AP983123PCC 983137983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143

983139983151983151983154983140983145983150983137983156983145983151983150 983139983144983137983150983150983141983148983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150

983139983151983150983156983154983151983148 983139983144983137983150983150983141983148

A983148983145983143983150983149983141983150983156 OH FA983123 983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

MFA983123 983149983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148

O983124983125983147 OH 983123M 983155983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143

GCC0 983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 0

983122E983123 983154983141983155983141983154983158983141983140 983142983151983154 983142983157983156983157983154983141 983145983150983156983141983154983150983137983156983145983151983150983137983148

983155983156983137983150983140983137983154983140983145983162983137983156983145983151983150

OP983125983147 OH P983123I 983152983137983161983148983151983137983140 983155983156983154983157983139983156983157983154983141 983145983140983141983150983156983145983142983145983141983154

JC 983146983157983155983156983145983142983145983139983137983156983145983151983150 983139983151983150983156983154983151983148

NJO 983150983141983143983137983156983145983158983141 983146983157983155983156983145983142983145983139983137983156983145983151983150 983151983152983152983151983154983156983157983150983145983156983161

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

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Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

7182019 OTN Basics

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1801201539 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

7182019 OTN Basics

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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Confidential

bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 29: OTN Basics

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Confidential

Frame Alignment Signal

B983161983156983141 1 B983161983156983141 2 B983161983156983141 3 B983161983156983141 4 B983161983156983141 5 B983161983156983141 6

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

OA1 OA1 OA1 OA2 OA2 OA2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 MFA983123 983123M GCC0 983122E983123 JC983122E983123

17

F983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (FA983123)

A 983155983145983160983085983138983161983156983141 O983124983125983147983085FA983123 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150983155 1 983156983151 6 983151983142 983156983144983141 O983124983125983147

983151983158983141983154983144983141983137983140

OA1 983145983155 0983160F6 (1111 0110) 983137983150983140 OA2 983145983155 098316028 (0010 1000)

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Confidential

Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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Confidential

OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Confidential

Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 30: OTN Basics

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Multiframe Alignment Signal

MFA983123 OH 983138983161983156983141

M F A 983123 983155 983141 983153 983157 983141 983150 983139 983141

1 2 3 4 5 6 7 8

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

0 0 0 0 0 0 1 0

0 0 0 0 0 0 1 1

0 0 0 0 0 1 0 0

1 1 1 1 1 1 1 0

1 1 1 1 1 1 1 1

0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 1

M983157983148983156983145983142983154983137983149983141 983137983148983145983143983150983149983141983150983156 983155983145983143983150983137983148 (MFA983123)

I983156 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 1 983137983150983140 983139983151983148983157983149983150 7

983124983144983141 983158983137983148983157983141 983151983142 983156983144983141 MFA983123 983138983161983156983141 983145983155 983145983150983139983154983141983137983155983141983140 983138983161 O983124983125983147OD983125983147

983142983154983137983149983141 983137983150983140 983156983144983141 MFA983123 983138983161983156983141 983152983154983151983158983145983140983141983155 983137 983149983137983160983145983149983157983149 983151983142 256

983149983157983148983156983145983142983154983137983149983141983155

I983150983140983145983158983145983140983157983137983148 O983124983125983147OD983125983147 983151983158983141983154983144983141983137983140 983155983145983143983150983137983148983155 983149983137983161 983157983155983141 983156983144983145983155

983139983141983150983156983154983137983148 983149983157983148983156983145983142983154983137983149983141 983156983151 983148983151983139983147 983156983144983141983145983154 2 4 8 16 983151983154 32

983149983157983148983156983145983142983154983137983149983141983155 983156983151 983156983144983141 983149983137983145983150 983142983154983137983149983141

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983123M GCC0 983122E983123 JC983122E983123

17

MFA983123

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OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201532 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

7182019 OTN Basics

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1801201533 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

7182019 OTN Basics

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

7182019 OTN Basics

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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Confidential

bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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Confidential

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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Confidential

OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 31: OTN Basics

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OTUk Section Monitoring Overhead

983124983154983137983145983148 983156983154983137983139983141 983145983140983141983150983156983145983142983145983141983154 (983124983124I)

A 983151983150983141983085983138983161983156983141 983151983158983141983154983144983141983137983140 983145983155 983140983141983142983145983150983141983140 983156983151 983156983154983137983150983155983152983151983154983156 64983085983138983161983156983141 983124983124I

983155983145983143983150983137983148983155

983124983144983141 64983085983138983161983156983141 983124983124I 983155983145983143983150983137983148 983155983144983151983157983148983140 983138983141 983137983148983145983143983150983141983140 983159983145983156983144 983156983144983141 O983124983125983147

983149983157983148983156983145983142983154983137983149983141 983137983150983140 983156983154983137983150983155983149983145983156983156983141983140 983142983151983157983154 983156983145983149983141983155 983152983141983154 983149983157983148983156983145983142983154983137983149983141

983124983124I 983155983156983154983157983139983156983157983154983141

16983085983138983161983156983141 983123API 983155983151983157983154983139983141 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

16983085983138983161983156983141 DAPI 983140983141983155983156983145983150983137983156983145983151983150 983137983139983139983141983155983155 983152983151983145983150983156 983145983140983141983150983156983145983142983145983141983154

32983085983138983161983156983141 983151983152983141983154983137983156983151983154 983155983152983141983139983145983142983145983141983140 983145983150983142983151983154983149983137983156983145983151983150

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3891

1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 3991

1801201539 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 4091

1801201540 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

7182019 OTN Basics

httpslidepdfcomreaderfullotn-basics 4191

1801201541 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

7182019 OTN Basics

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1801201542 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

7182019 OTN Basics

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1801201543 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

7182019 OTN Basics

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1801201544 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

7182019 OTN Basics

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1801201546 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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1801201547 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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Confidential

bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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1801201587 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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1801201591 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 32: OTN Basics

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Confidential

OTUk Section Monitoring Overhead

bull Bit interleaved parity-8 (BIP-8)

- For section monitoring and a one-byte error detection code signals are defined

- This byte provides a bit interleaved parity-8 (BIP-8) code

- OTUk BIP-8 is computed over bits in the OPUk (columns 15 to 3824) area of OTUk framei and inserted in the OTUk BIP-8 overhead location in OTUk frame i+2

BIP8

OP983125983147

1 14 15 3824

F983154983137983149983141 983145

F983154983137983149983141 983145+1

F983154983137983149983141 983145+2

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Confidential

OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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Confidential

bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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Confidential

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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Confidential

OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Confidential

Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 33: OTN Basics

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OTUk Section Monitoring Overhead

bull Backward error indicationbackward incoming

alignment error (BEIBIAE)

- A four-bit BEI and BIAE signal is defined

- This signal is used to transmit in the upstream

direction the count of interleaved-bit blocks and

incoming alignment error (IAE) conditions

- During an IAE condition the code 1011 is insertedinto the BEIBIAE field and the error count is

ignored Otherwise the error count (0-8) is inserted

into the BEIBIAE field

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123MFA983123 983123M

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OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

7182019 OTN Basics

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

7182019 OTN Basics

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 34: OTN Basics

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1801201534 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Backward defect indication (BDI)

- A single-bit BDI signal is defined to transmit the

signal failure status detected by the section

termination sink function in the upstream

direction

- BDI is set to 1 to indicate an OTUk backward

defect indication otherwise it is set to 0

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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1801201535 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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1801201537 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

7182019 OTN Basics

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1801201538 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

7182019 OTN Basics

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1801201545 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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1801201546 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

7182019 OTN Basics

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Confidential

Thank YouThank YouThank YouThank You

80

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Confidential

Performance Events

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Confidential

Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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Confidential

bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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Confidential

bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 35: OTN Basics

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Confidential

OTUk Section Monitoring Overhead

bull Incoming alignment error (IAE)

- A single-bit IAE signal is defined to allow the S-

CMEP ingress point to inform its peer S-CMEP

egress point that an alignment error in the

incoming signal has been detected

- IAE is set to 1 to indicate a frame alignment

error otherwise it is set to 0

bull RES (reserved)

- Two bits are reserved (RES) for future

international standardization They are set to

00

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEIBIAE B D I

983122E983123

1 2 3 4 5 6 7 8

1 2 3

I A E

63

32

0

15

16

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 GCC0 983122E983123 JC983122E983123

17

MFA983123 983123M

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Confidential

bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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Confidential

ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Confidential

Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Confidential

Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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Confidential

bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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Confidential

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 36: OTN Basics

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bull General communication channel (GCC0)

- Two bytes are allocated in the OTUk overhead to support a general

communications channel between OTUk termination points- A clear channel is located in row 1 and columns 11 and 12

bull RES (reserved)

- Two bytes of the OTUk overhead are reserved for future international

standardization

- They are located in row 1 and columns 13 and 14

- They are set to all ldquo0rdquos

OTUk GCC0 and RES Overhead

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4

PM

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

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ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 37: OTN Basics

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ODUk Path Monitoring Overhead

983124983124I BIP9830858 BEI BDI

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141

983155983137983149983141 983137983155 983156983144983151983155983141 983151983142 983156983144983141 O983124983125983147 983123M 983155983145983143983150983137983148 983141983160983139983141983152983156 983156983144983137983156 BEI

983155983145983143983150983137983148983155 983140983151 983150983151983156 983155983157983152983152983151983154983156 983156983144983141 BIAE 983142983157983150983139983156983145983151983150

983124983144983141983161 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 3 983137983150983140 983139983151983148983157983149983150983155 10 983156983151 12

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

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ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

7182019 OTN Basics

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1801201539 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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1801201541 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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1801201589 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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1801201590 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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1801201591 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 38: OTN Basics

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Confidential

ODUk Path Monitoring Overhead

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983141983140

983124983124I BIP9830858

BEI B D I

983123983124A983124

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2 983124CM1

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM

Bit 678 Status

000 Reserved for future international standardization

001 Normal path signal

010 Reserved for future international standardization

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk - LCK

110 Maintenance signal ODUk - OCI

111 Maintenance signal ODUk - AIS

983123983156983137983156983157983155 (983123983124A983124)

F983151983154 983152983137983156983144 983149983151983150983145983156983151983154983145983150983143 983156983144983154983141983141 983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Confidential

Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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Confidential

bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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1801201589 copy Nokia 2014 - File Name - Version - Creator - DocID

Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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Confidential

bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 39: OTN Basics

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Confidential

ODUk TCM Overhead

983124983124I983145BIP9830858983145BEI983145BIAE983145BDI983145

F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140

983156983144983145983155 983151983158983141983154983144983141983137983140991257983155 983142983157983150983139983156983145983151983150983155 983137983154983141 983156983144983141 983155983137983149983141 983137983155 983156983144983151983155983141

983151983142 O983124983125983147 983123M 983155983145983143983150983137983148983155

983123983145983160 983142983145983141983148983140983155 983151983142 983156983144983141 OD983125983147 983124CM 983151983158983141983154983144983141983137983140 983137983154983141 983140983141983142983145983150983141983140

983145983150 983154983151983159 2 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 13 983137983150983140 983154983151983159 3 983137983150983140

983139983151983148983157983149983150983155 1 983156983151 9 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1983124CM2983124CM3

983124CM6 983124CM5 983124CM4

k h d

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Confidential

ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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Confidential

OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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Confidential

bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 40: OTN Basics

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ODUk TCM Overhead

983124983124I983145 BIP9830858983145

BEI983145BIAE983145 B D I 983145

983123983124A983124983145

1 2 3 4 5 6 7 8

1 2 3

63

32

0

1516

31

983123API

DAPI

O983152983141983154983137983156983151983154

983155983152983141983139983145983142983145983141983140

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IGCC2 AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

Bit 678 Status

000 No source TC

001 In use without IAE

010 In use without IAE

011 Reserved for future international standardization

100 Reserved for future international standardization

101 Maintenance signal ODUk -LCK

110 Maintenance signal ODUk -OCI

111 Maintenance signal ODUk -AIS

983124CM2983124CM3

983124CM6 983124CM5 983124CM4

983123983124A983124 (983155983156983137983156983157983155) F983151983154 983141983137983139983144 983156983137983150983140983141983149 983139983151983150983150983141983139983156983145983151983150 983149983151983150983145983156983151983154983145983150983143 983142983145983141983148983140 983156983144983154983141983141

983138983145983156983155 983137983154983141 983140983141983142983145983150983141983140 983137983155 983155983156983137983156983157983155 983138983145983156983155

983124983144983141983161 983145983150983140983145983139983137983156983141 983156983144983141 983152983154983141983155983141983150983139983141 983151983142 983137 983149983137983145983150983156983141983150983137983150983139983141 983155983145983143983150983137983148 983145983142

983156983144983141983154983141 983145983155 983137983150 983145983150983139983151983149983145983150983143 983137983148983145983143983150983149983141983150983156 983141983154983154983151983154 983137983156 983156983144983141 983155983151983157983154983139983141 983124C983085

CMEP 983151983154 983145983142 983156983144983141983154983141 983145983155 983150983151 983155983151983157983154983139983141 983124C983085CMEP 983137983139983156983145983158983141

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Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

7182019 OTN Basics

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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Confidential

bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 41: OTN Basics

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Confidential

Tandem Connection Monitoring

bull SONETSDH monitoring is divided into Section Line and

Path monitoring A problem arises when you have

ldquoCarrierrsquos Carrierrdquo situation as shown in next slide whereit is required to monitor a segment of the path that

passes another carrier network

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Confidential

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Confidential

Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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Confidential

ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Confidential

Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Confidential

Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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Confidential

g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Confidential

Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Confidential

Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 42: OTN Basics

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Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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Confidential

bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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Confidential

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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Confidential

OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 43: OTN Basics

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Overlapped ODUk Monitored Connections

A1 B1 C1 C2B2 A2

A1 983085 A2

B1 983085 B2

C1 983085 C2

983124CM1 983124CM1

983124CM2

983124CM1

983124CM2983124CM3

983124CM1

983124CM2

983124CM1

983124CM983145 983124CM OH 983142983145983141983148983140 983150983151983156 983145983150 983157983155983141 983124CM983145 983124CM OH 983142983145983141983148983140 983145983150 983157983155983141

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM2983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM3

983124CM4

983124CM5

983124CM6

983124CM4

983124CM5

983124CM6

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ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Confidential

Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 44: OTN Basics

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ODUk TCM ACT Coordination Protocol

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 (983124CMAC983124)

A 983151983150983141983085983138983161983156983141 983124CM 983137983139983156983145983158983137983156983145983151983150983140983141983137983139983156983145983158983137983156983145983151983150 983142983145983141983148983140 983145983155 983148983151983139983137983156983141983140 983145983150 983154983151983159 2 983137983150983140

983139983151983148983157983149983150 4

I983156983155 983140983141983142983145983150983145983156983145983151983150 983145983155 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

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ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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Confidential

ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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Confidential

bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

7182019 OTN Basics

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 45: OTN Basics

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Confidential

ODUk GCC1GCC2

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

G983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148 (GCC1GCC2)

983124983159983151 983142983145983141983148983140983155 983151983142 983156983144983141 983156983159983151 983138983161983156983141983155 983137983154983141 983137983148983148983151983139983137983156983141983140 983145983150 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140 983156983151 983155983157983152983152983151983154983156 983156983159983151983143983141983150983141983154983137983148 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983144983137983150983150983141983148983155 983138983141983156983159983141983141983150 983137983150983161 983156983159983151 NE983155 983159983145983156983144 983137983139983139983141983155983155 983156983151 983156983144983141 OD983125983147

983142983154983137983149983141 983155983156983154983157983139983156983157983154983141 (983142983151983154 983141983160983137983149983152983148983141 983137983156 3983122 983154983141983143983141983150983141983154983137983156983145983151983150 983152983151983145983150983156983155)

983124983144983141 983138983161983156983141983155 983142983151983154 GCC1 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 1 983137983150983140 2 983137983150983140 983156983144983141 983138983161983156983141983155 983142983151983154

GCC2 983137983154983141 983148983151983139983137983156983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 3 983137983150983140 4 983151983142 983156983144983141 OD983125983147 983151983158983141983154983144983141983137983140

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Confidential

ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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Confidential

ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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Confidential

ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Confidential

Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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Confidential

OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Confidential

Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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Confidential

g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Confidential

Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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Confidential

bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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Confidential

bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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Confidential

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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Confidential

OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 46: OTN Basics

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ODUk APSPCC Channel

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123I983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2 AP983123PCC

A983157983156983151983149983137983156983145983139 983152983154983151983156983141983139983156983145983151983150 983155983159983145983156983139983144983145983150983143983152983154983151983156983141983139983156983145983151983150 983139983151983149983149983157983150983145983139983137983156983145983151983150 983139983151983150983156983154983151983148 (AP983123PCC)

A 983142983151983157983154983085983138983161983156983141 OD983125983147983085AP983123PCC 983155983145983143983150983137983148 983145983155 983140983141983142983145983150983141983140 983145983150 983154983151983159 4 983137983150983140 983139983151983148983157983149983150983155 5 983156983151 8 983151983142 983156983144983141 OD983125983147

983151983158983141983154983144983141983137983140

F983151983154 983148983145983150983141983137983154 983152983154983151983156983141983139983156983145983151983150 983155983139983144983141983149983141983155 983138983145983156 983137983155983155983145983143983150983149983141983150983156983155 983142983151983154 983156983144983141983155983141 983138983161983156983141983155 983137983150983140 983156983144983141 983138983145983156 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148

983137983154983141 983143983145983158983141983150 983145983150 I983124983125983085983124 G8731 B983145983156 983137983155983155983145983143983150983149983141983150983156 983137983150983140 983138983161983156983141 983151983154983145983141983150983156983141983140 983152983154983151983156983151983139983151983148 983142983151983154 983154983145983150983143 983152983154983151983156983141983139983156983145983151983150

983155983139983144983141983149983141983155 983137983154983141 983156983151 983138983141 983140983141983142983145983150983141983140 983145983150 983142983157983156983157983154983141

A 983149983137983160983145983149983157983149 983151983142 983141983145983143983144983156 983148983141983158983141983148983155 983151983142 983150983141983155983156983141983140 AP983123PCC 983155983145983143983150983137983148983155 983149983137983161 983138983141 983152983154983141983155983141983150983156 983145983150 983156983144983145983155 983142983145983141983148983140

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ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 47: OTN Basics

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ODUk FTFL Channel

bull Fault Type amp Fault Location (FTFL)

- One byte is allocated in the ODUk overhead to transport a 256-byte FTFL

message

- The byte is located in row 2 and column 14 of the ODUk overhead

- The 256-byte FTFL message consists of two 128-byte fields The forward field is

allocated in bytes 0 to 127 of the FTFL message The backward field is allocated

in bytes 128 to 255 of the FTFL message

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

ODUk Experimental and Reserved Overhead

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 48: OTN Basics

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ODUk Experimental and Reserved Overhead

bull Experimental (EXP)

- Two bytes are allocated in the ODUk overhead for experimental use

- They are located in row 3 and columns 13 and 14 of the ODUk overhead

- There is no requirement for forwarding the EXP overhead over different (sub)networks

bull RES

- 9 bytes are reserved in the ODUk overhead for future international standardization

- They are located in row 2 and columns 1 to 3 and row 4 and columns 9 to 14 of the ODUk

overhead

- They are set to all ldquo0rdquos

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

F983124FL 983122E983123 JC

983122E983123 JC

NJOP983123IAP983123PCC

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

E983128P

983122E983123

983122E983123

OPUk Payload Structure Identifier

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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Confidential

bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Confidential

Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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Confidential

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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Confidential

OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 49: OTN Basics

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OPUk Payload Structure Identifier

bull Payload structure identifier (PSI)

- One byte is allocated in the OPUk overhead to

transport a 256-byte payload structure

identifier (PSI) signal

- It is aligned with the ODUk multiframe

- PSI[0] contains a one-byte payload type

PSI[1] to PSI[255] are mapping and

concatenation specific

255

0

1

P983124

M983137983152983152983145983150983143

983137983150983140 983139983151983150983139983137983156983141983150983137983156983145983151983150

983155983152983141983139983145983142983145983139

983122E983123

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

983122E983123 JC

NJOAP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123

17

MFA983123 983123M GCC0

PM983124CM1

GCC2

F983124FL

P983123I

Payload Type Code Points

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 50: OTN Basics

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Payload Type Code Points

MSB 1234 LSB 1234 Hex Code Meaning

0000 0001 01 Experimental mapping

0000 0010 02 Asynchronous CBR mapping

0000 0011 03 Bit synchronous CBR mapping

0000 0100 04 ATM mapping

0000 0101 05 GFP mapping

0000 0110 06 Virtual Concatenated signal

0001 0000 10 Bit stream with octet timing mapping

0001 0001 11 Bit stream without octet timing mapping

0010 0000 20 ODU multiplex structure

0101 0101 55 Not available

0110 0110 66 Not available

1000 xxxx 80-8F Reserved codes for proprietary use

1111 1101 FD NULL test signal mapping

1111 1110 FE PRBS test signal mapping

1111 1111 FF Not available

OPUk Mapping Specific Overhead

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 51: OTN Basics

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OPUk Mapping Specific Overhead

bull Justification controlnegative justification opportunityreserved

(JCNJORES)

- Seven bytes are reserved in the OPUk overhead for the mapping and concatenation

specific overhead

- These bytes are located in rows 1 to 3 and columns 15 and 16 and row 4 and column

16

- 255 bytes in the PSI are reserved for mapping and concatenation specific purposes

983122E983123

1

2

3

4

983124CM3

983124CM6 983124CM5

983124CM2

983124CM4983124CMAC983124

GCC1

983122E983123 JC

JC

AP983123PCC 983122E983123

E983128P

FA983123 983122E983123 JC983122E983123MFA983123 983123M GCC0

PM983124CM1

GCC2 P983123I

F983124FL

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

983122E983123

NJO

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Confidential

Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 52: OTN Basics

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function fordifferent layers

16 Alarm events

Maintenance Signals

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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Confidential

ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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Confidential

bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Confidential

Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

7182019 OTN Basics

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 53: OTN Basics

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Maintenance Signals

bull Forward defect indication (FDI)

- FDI is a signal sent to the downstream direction as an indication that an

upstream defect has been detected

- An FDI signal is detected by the trail termination sink function to suppress

defects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

- FDI is transported as non-associated overhead in the OTM overhead signal

(OOS)

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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Confidential

ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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Confidential

bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 54: OTN Basics

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Maintenance Signals

bull Alarm indication signal (AIS)

- AIS is a signal sent to the downstream direction as an indication that an

upstream defect has been detected An AIS signal is generated by theadaptation sink function

- An AIS signal is detected by the trail termination sink function to suppressdefects or failures that would otherwise be detected as a result of

interruption of transport of the original signal at an upstream point

Maintenance Signals

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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Confidential

OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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Confidential

ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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Confidential

bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 55: OTN Basics

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Maintenance Signals

bull Alarm indication signal (AIS)

- ODUk-AIS is specified as all 1s in the entire ODUk signal excluding the

frame alignment overhead (FA OH) OTUk overhead (OTUk OH) and ODUk

FTFL

- ODUk-AIS is detected by monitoring the ODUk STAT bits in the PM and TCMioverhead fields

1

2

3

4

1 17 3824

A983148983148 9912601991261983155 983152983137983156983156983141983154983150

87 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

Maintenance Signals

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 56: OTN Basics

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Maintenance Signals

bull Backward defect indication (BDI)

- Backward defect indication payload defect (dBDI-P) is monitored

at the OTS and OMS layers The purpose of monitoring this

parameter is to allow for single-ended supervision of the trail

- A BDI-P (dBDI-P) defect needs to be declaredcleared at the trail

termination sink function within X msY ms of detecting the far-

end defect causing the insertion of BDI-P into the OOS

- X and Y are to be defined in the future

- During signal failure conditions of the overhead signal dBDI-P

needs to be set to false

Maintenance Signals

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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Confidential

bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 57: OTN Basics

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g

bull Payload missing indication (PMI)

- PMI defects are monitored at the OTS and OMS layers The purpose of

monitoring this parameter is to suppress downstream loss of signal

alarms at the trail termination sink due to upstream defects causing

missing payload at the start of the trail

- PMI defects (dPMI) need to be declaredcleared by the trail

termination sink function within X or Y ms when it is detected that

the missing payload condition causes insertion of PMI into the OOS

- During signal failure conditions of the overhead signal dPMI needs to

be set to false

Maintenance Signals

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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Confidential

bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 58: OTN Basics

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g

bull Open connection indication (OCI)

- A signal sent downstream as an indication that in the upstream

direction the signal is not connected to a trail termination source

- The presence of ODUk-OCI is detected by monitoring the ODUk STAT bits

in the PM and TCMi overhead fields

- The repeated 0110 0110 pattern is the default pattern other patterns

are also allowed as long as the STAT bits in the PM and TCMi overhead

fields are set to 110

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600110 0110991261 983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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Confidential

ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 59: OTN Basics

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g

bull Locked (LCK)

- A signal sent downstream as an indication that in the upstream direction the

connection is locked and no signal is passed through

- The presence of ODUk-LCK is detected by monitoring the ODUk STAT bits in the PM

and TCMi overhead fields

- dLCK needs to be declared if the accepted STAT information (AcSTAT) is ldquo101rdquo

dLCK needs to be cleared if the accepted STAT information is not equal to ldquo101rdquo

- During signal failure conditions of the data signal dLCK needs to be set to false

1

2

3

4

1 17 382487 14

F 983124 F L

FA OH O983124983125983147 OH

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983123 983124 A 983124

983122983141983152983141983137983156983141983140 9912600101 0101991261983152983137983156983156983141983154983150

Maintenance Signals

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g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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Confidential

ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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Confidential

bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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Confidential

bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Confidential

Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 60: OTN Basics

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Confidential

g

bull Incoming alignment error (IAE)

- IAE at the OTUk layer dIAE needs to be declaredcleared if the IAE bit in

the SM overhead field (byte 3 bit 6) is ldquo1rdquoor ldquo0rdquo for X consecutive framesX is 5

- IAE at the ODUkT layer dIAE needs to be declaredcleared if the accepted

STAT information (AcSTAT) is not ldquo010rdquo

- During signal failure conditions of the data signal dIAE needs to be set to

false

bull Backward incoming alignment error (BIAE)

- dBIAE needs to be declaredcleared if the BEIBIAE bits in the SMTCM overheadfield (byte 3 bits 1 to 4) are not ldquo1011rdquo for X consecutive frames X is 3

- During signal failure conditions of the data signal dBIAE needs to be set to false

Maintenance and Management Signal

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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Confidential

OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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Confidential

ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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Confidential

bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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Confidential

bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Confidential

Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 61: OTN Basics

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Maintenance and Management Signal

Management

FunctionSignal

Network Layer

OTUk ODUkP ODUkT

Alignment LOFLOM Y Y -

Connectivity TTI Y Y Y

Maintenance

signal

AIS Y Y Y

OCI - Y Y

LCK - Y Y

LTC - - Y

BDI Y Y Y

BEI Y Y Y

IAEBIAE Y - YSignal quality BIP-8 Y Y Y

Contents

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

7182019 OTN Basics

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 62: OTN Basics

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Contents

11 OTN introduction

12 OTN interface structure13 Multiplexingmapping principles and bit

rates

14 Overhead description15 Maintenance signals and function for

different layers

16 Alarm events

Alarm

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 63: OTN Basics

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Layer Alarm

OTUk OTUk_LOF OTUk_AIS OTUk_LOM OTUk_TIM OTUk_DEG

OTUk_EXC OTUk_BDI BEFFEC_EXC

ODUk_PM ODUk_PM_TIM ODUk_PM_DEG ODUk_PM_EXC

ODUk_PM_BDI ODUk_PM_LCK ODUk_PM_OCI ODUk_PM_AIS

ODUk_LOFLOM

ODUk_TCMi ODUk_TCMi_TIM ODUk_TCMi_DEG ODUk_TCMi_EXC

ODUk_TCMi_BDI ODUk_TCMi_LCK ODUk_TCMi_OCI

ODUk_TCMi_AIS ODUk_TCMi_LTC

OPUk OPUk_PLM OPU2_MSIM OPU3_MSIM

983122983141983149983137983154983147983155 983147 = 1 2 3991270 I = 1 983156983151 6

Common OTN Alarms OTUk_LOF

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 64: OTN Basics

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bull Alarm description

This alarm indicates OTUk frame loss During frame alignment if

the frames are out of synchronization for three consecutivemilliseconds this alarm is reported This alarm is a critical alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms OTUk_LOM

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 65: OTN Basics

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bull Alarm description

This alarm indicates OTUk multiframe loss During multiframe

alignment if the multiframes are out of synchronization for three

consecutive milliseconds (that is the MFAS overhead value is

illegal) this alarm is reported This alarm is a major alarm

bull Possible causes

- The receive optical power is inappropriate

- The BER is excessively high because the laser on the opposite boardis aged or attenuation of the optical fiber on the line is excessively

large

- A board at the local or opposite end malfunctions

Common OTN Alarms ODUk LOFLOM

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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Confidential

bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 66: OTN Basics

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Common OTN Alarms ODUk_LOFLOM

bull Alarm description

This alarm indicates ODUk frame and multiframe loss When the

frame header information in the upstream direction mis-matches

that in the downstream direction and the frames are out ofsynchronization for three consecutive milliseconds during frame

alignment this alarm is reported This is a critical alarm

bull Possible causes- The working mode of the local optical port is not set to the OTN

mode

- The receive optical fiber malfunctions

- The optical port at the local or opposite end malfunctions

- The optical fiber on the line malfunctions

Common OTN Alarms OTUk_AIS

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 67: OTN Basics

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bull Alarm description

This alarm indicates an OTUk alarm indication signal The entire

OTUk layer is a PN-11 sequence and therefore AIS signals are

applicable to the entire OTUk layer This alarm is reported when it is

detected that signals in the upstream direction are invalid This is amajor alarm The OTUk signal is a general AIS signal of PN-11

sequence

bull Possible causeThe upstream equipment inserts OTUk-layer AIS signals

Common OTN AlarmsODUk_PM_AISODUk_TCMi_AIS

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 68: OTN Basics

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bull Alarm description

This alarm indicates an ODUk PMODUk TCMi alarm indication signal

When this alarm is reported verify that the value of the STAT overhead

is ldquo111rdquo This alarm is a major alarmbull Possible causes

bull When detecting R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the upstream site inserts an ODUk_AIS signal to the downstream site

Whether to insert an ODUk AIS signal when the upstream site detectsOTUk_TIM can be set

bull In operation mode when detecting ODUk_TCMi_LCK ODUk_TCMi_OCI or

ODUk_TCMi_TIM the upstream site inserts an ODUk_AIS signal to thedownstream site Whether to insert an ODUk_AIS signal when the

upstream site detects ODUk_TCMi_TIM can be set

Common OTN Alarms

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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Confidential

bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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Confidential

bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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Confidential

bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

7182019 OTN Basics

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Confidential

Thank YouThank YouThank YouThank You

80

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Confidential

Performance Events

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Confidential

Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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Confidential

bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 69: OTN Basics

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OTUk_TIMODUk_PM_TIMODUk_TCMi_TIM

bull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi tracing

identifiers mismatch When the TTI channel tracing byte to bereceived and the received TTI channel tracing byte are different at

the local site this alarm is reported This alarm is a minor alarm

bull Possible causes

- The TIM mode in the network planning and the configured TIM modeare different

- The TTI channel tracing byte to be received (by default it is null when

it is not set) is different from the received TTI channel tracing byte

- Optical fiber connections are incorrect- The upstream board malfunctions

Common OTN Alarms

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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Confidential

bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 70: OTN Basics

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OTUk_DEGODUk_PM_DEGODUk_TCMi_DEGbull Alarm description

This alarm indicates that OTUkODUk PMODUk TCMi signals are

degraded In burst or Poisson mode this alarm is reported when it is

detected that the signals are degraded This alarm is a minor alarm

bull Possible causes

- An optical port at the local or opposite end malfunctions

- The optical fiber on the transmission line malfunctions

- The optical power at a local optical port is inappropriate

- In burst mode the DEG bit error threshold and DEGM (detection time)

of a board are set to small values

- In Poisson mode the BER threshold for the alarm indicating signal

degrade is set to a small value

Common OTN Alarms

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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Confidential

bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 71: OTN Basics

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Common OTN Alarms

OTUk_EXCODUk_PM_EXCODUk_TCMi_EXC

bull Alarm description

This alarm indicates that in Poisson mode the BIP8 BER at the

OTUkODUk PMODUk TCMi level exceeds the pre-set thresholdThis alarm is a major alarm

bull Possible causes

- The line optical attenuation is excessively large

- The attenuation of an optical module is set to an excessively large

value

- An optical port is dirty

- An optical fiber is aged bent or stretched tight- An optical module is damaged

Common OTN Alarms BEFFEC

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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Confidential

ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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Confidential

bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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Confidential

bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

7182019 OTN Basics

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Confidential

Thank YouThank YouThank YouThank You

80

7182019 OTN Basics

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Confidential

Performance Events

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Confidential

Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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Confidential

bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 72: OTN Basics

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bull Alarm description

This alarm indicates that pre-FEC BER exceeds the threshold This

alarm is a warning alarmbull Possible causes

- The input optical power is inappropriate

- There are bit errors on the line

- An optical fiber connector is dirty

Common OTN AlarmsOTUk_BDIODUk_PM_BDIODUk_TCMi_BDI

bull Alarm description

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Confidential

bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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Confidential

ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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Confidential

bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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Confidential

bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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Confidential

bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 73: OTN Basics

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Confidential

bull Alarm description

This alarm indicates an OTUkODUk PMODUk TCMi backward defect

indication signal This alarm is reported when BDI bits in the

SMPMTCMi overhead domain are ldquo1rdquo for five consecutive frames This

alarm is a minor alarmbull Possible causes

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM or OTUk_TIM

the downstream site inserts OTUk_BDI back to the upstream site

- After receiving R_LOS OTUk_AIS OTUk_LOF OTUk_LOM OTUk_TIM

ODUk_LOFLOM ODUk_PM_AIS ODUk_PM_OCI ODUk_PM_LCK

ODUk_PM_TIM or ODUk_TCMi_LTC the downstream site inserts

ODUk_PM_BDI back to the upstream- Board hardware malfunctions

Common OTN AlarmsODUk PM LCKODUk TCMi LCK

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Confidential

ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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Confidential

ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

7182019 OTN Basics

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Common OTN Alarms OPUk_PLM

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Confidential

bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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Confidential

bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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Confidential

bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Confidential

Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 74: OTN Basics

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ODUk_PM_LCKODUk_TCMi_LCK

bull Alarm description

This alarm indicates an ODUk PMODUk TCMi signal lockout

defect When the value of the received STAT information is

ldquo101rdquo an LCK alarm is generated The LCK maintenance signal

is required by carriers and the signal is used for locking signals

at the user access point This alarm is a minor alarm

bull Possible causes

When the services carried on the line are used for maintenance

and LCK at the corresponding level on the board at the

upstream site is enabled the downstream board reports analarm at the corresponding level after receiving the LCK signal

inserted by the upstream site

Common OTN AlarmsODUk PM OCIODUk TCMi OCI

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Confidential

ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

7182019 OTN Basics

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Common OTN Alarms OPUk_PLM

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Confidential

bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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Confidential

bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

7182019 OTN Basics

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Confidential

bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

7182019 OTN Basics

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Confidential

Thank YouThank YouThank YouThank You

80

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Performance Events

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Confidential

Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Confidential

Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Confidential

Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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Confidential

bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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Confidential

bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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Confidential

bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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Confidential

bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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Confidential

bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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Confidential

bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 75: OTN Basics

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Confidential

ODUk_PM_OCIODUk_TCMi_OCI

bull Alarm description

This alarm indicates ODUk PMODUk TCMi disconnection

indication When the value of the received STAT informationis ldquo110rdquo an OCI alarm is reported indicating that output port

is not connected to the input port This alarm is a minor

alarm indicating a disconnection between the input port and

output port

bull Possible causes

- Upstream cross-connections are not configured or are

incorrectly configured

- A loopback is performed on the client side or line side

7182019 OTN Basics

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Common OTN Alarms OPUk_PLM

7182019 OTN Basics

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 76: OTN Basics

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Common OTN Alarms OPUk_PLM

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

Page 77: OTN Basics

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bull Alarm description

This alarm indicates that OPUk payload mismatches When the

received payload type is different from the expected payload type

defined by the adaptation function this alarm is reported Thisalarm is a minor alarm

bull Possible cause

On an NE the PT byte to be received at the OPUk layer is differentfrom the actually received PT byte at the OPUk layer

Common OTN Alarms OPU2_MSIMOPU3_MSIM

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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bull Alarm description

This alarm indicates that OPU2OPU3 multiplexing structure

identifier mismatches When the automatic configuration function

of the multiplexing structure is supported and activated if thevalue of the received MSI identifier is not supported by the specific

adaptation function (for example the tributary port or ODU type is

correct) an MSIM alarm is reported When the automatic

configuration function of the multiplexing structure is supported or

not activated if the actually received MSI is different from the to

be received MSI an MSIM alarm is reported This alarm is a minor

alarm

bull Possible cause

A board does not support the multiplexing structure of services

transmitted from a board on the source NE

Suppression Mechanisms of Electrical-Layer Alarms

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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bull IAE and BIAE are not alarms but IAE can suppress DEG at the same level

O983124983125983147983135AI983123

O983124983125983147983135LOF

O983124983125983147983135LOM

O983124983125983147983135983124IM

OP983125983147983135PLM

OP983125983147983135M983123IM

O983124983125983147983135BIAEO983124983125983147983135IAE O983124983125983147983135BDI

O983124983125983147983135DEG

OD983125983147983135LOFLOM

OD983125983147983135983124CM983145983135L983124COCILCKAI983123

OD983125983147983135983124CM983145983135983124IM

OD983125983147983135PM983135OCILCKAI983123

OD983125983147983135PM983135983124IM

OD983125983147983135PM983135BDI

OD983125983147983135983124CM983145983135BIAE

OD983125983147983135983124CM983145983135BDI

OD983125983147983135983124CM983145983135IAE

OD983125983147983135983124CM983145983135DEG

OD983125983147983135PM983135DEGOP983125983147983135PLM

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Thank YouThank YouThank YouThank You

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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Thank YouThank YouThank YouThank You

80

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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Performance Events

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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Layer Performance Event

OTUk OTUk_BBE OTUk_BBER OTUk_BIAES OTUk_ES OTUk_FEBBE

OTUk_FEBBER OTUk_FEES OTUk_FESES OTUk_FESESR OTUk_FEUAS

OTUk_IAES OTUk_SES OTUk_SESR OTUk_UAS FEC_AFT_COR_ER

ODUk_PM ODUk_PM_BBE ODUk_PM_BBER ODUk_PM_ES ODUk_PM_FEBBE

ODUk_PM_FEBBER ODUk_PM_FEES ODUk_PM_FESES ODUk_PM_FESESR

ODUk_PM_FEUAS ODUk_PM_SES ODUk_PM_SESR ODUk_PM_UAS

ODUk_TCMi ODUk_TCMi_BBE ODUk_TCMi_BBER ODUk_TCMi_BIAES ODUk_TCMi_ES

ODUk_TCMi_FEBBE ODUk_TCMi_FEBBER ODUk_TCMi_FEES

ODUk_TCMi_FESES ODUk_TCMi_FESESR ODUk_TCMi_FEUAS

ODUk_TCMi_IAES ODUk_TCMi_SES ODUk_TCMi_SESR ODUk_TCMi_UAS

K = 1 2 3 5G I = 1 983156983151 6

OTN Performance Events OTUk Level

Performance Event Meaning Performance Meaning

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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Performance Event

Name

Meaning Performance

Event Name

Meaning

OTUk_BBE Background bit error block in the OTUk

SM section

OTUk_FESES Remote severe bit error second in the

OTUk SM section

OTUk_BBER Background bit error block rate in the

OTUk SM section

OTUk_FESES

R

Remote severe bit error second rate in the

OTUk SM section

OTUk_BIAES Backward alignment errored second in

the OTUk SM section

OTUk_FEUAS Remote unavailable second in the OTUk

SM section

OTUk_ES Bit error second in the OTUk SM section OTUk_IAES Alignment errored second in the OTUk

SM section

OTUk_FEBBE Remote background bit error block in

the OTUk SM section

OTUk_SES Severe bit error second in the OTUk SM

section

OTUk_FEBBER Remote background bit error block in

the OTUk SM section

OTUk_SESR Severe bit error second in the OTUk SM

section

OTUk_FEES Remote bit error second in the OTUk

SM section

OTUk_UAS Unavailable second in the OTUk SM

section

FEC_AFT_COR_ER Post-FEC BER

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_PM Level

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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Performance Event

Name

Meaning Performance

Event Name

Meaning

ODUk_PM_BBE Background bit error block in the

ODUk PM section

ODUk_PM_FESES Remote severe bit error second in

the ODUk PM section

ODUk_PM_BBER Background bit error block rate inthe ODUk PM section

ODUk_PM_FESESR

Remote severe bit error second ratein the ODUk PM section

ODUk_PM_ES Bit error second in the ODUk PM

section

ODUk_PM_FEUAS Remote unavailable second in the

ODUk PM section

ODUk_PM_FEBBE Remote background bit error

block in the ODUk PM section

ODUk_PM_SES Severe bit error second in the ODUk

PM section

ODUk_PM_FEBBER Remote background bit error

block rate in the ODUk PM

section

ODUk_PM_SESR Severe bit error second rate in the

ODUk PM section

ODUk_PM_FEES Remote bit error second in theODUk PM section

ODUk_PM_UAS Unavailable second in the ODUk PMsection

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G

OTN Performance Events ODUk_TCMi Level

Performance Event Meaning Performance Event Meaning

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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Name Name

ODUk_TCMi_BBE Background bit error block in the

ODUk TCMi section

ODUk_TCMi_FESES Remote severe bit error second in

the ODUk TCMi section

ODUk_TCMi_BBER Background bit error block rate in

the ODUk TCMi section

ODUk_TCMi_FESESR Remote severe bit error second rate

in the ODUk TCMi section

ODUk_TCMi_ES Bit error second in the ODUk

TCMi section

ODUk_TCMi_FEUAS Remote unavailable second in the

ODUk TCMi section

ODUk_TCMi_FEBBE Remote background bit error

block in the ODUk TCMi section

ODUk_TCMi_SES Severe bit error second in the ODUk

TCMi section

ODUk_TCMi_FEBBER Remote background bit error

block rate in the ODUk TCMisection

ODUk_TCMi_SESR Severe bit error second rate in the

ODUk TCMi section

ODUk_TCMi_FEES Remote bit error second in the

ODUk TCMi section

ODUk_TCMi_UAS Unavailable second in the ODUk

TCMi section

ODUk_TCMi_BIAES Backward alignment errored

second in the ODUk TCMi

section

ODUk_TCMi_IAES Alignment errored second in the

ODUk TCMi section

983122983141983149983137983154983147983155 991260983147991261 983139983137983150 983138983141 1 2 3 983151983154 5G 991260983145991261 983139983137983150 983138983141 1 983156983151 6

Acronyms and Abbreviations

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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bull 3R Re-amplification Reshaping and Retiming

bull AI Adapted Information

bull AIS Alarm Indication Signal

bull APS Automatic Protection Switching

bull BDI Backward Defect Indication

bull BDI-O Backward Defect Indication Overhead

bull BDI-P Backward Defect Indication Payload

bull BEI Backward Error Indication

bull BI Backward Indication

bull BIAE Backward Incoming Alignment Error

bull BIP Bit Interleaved Paritybull CBR Constant Bit Rate

Acronyms and Abbreviations

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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bull CMEP Connection Monitoring End Point

bull DAPI Destination Access Point Identifier

bull EXP Experimental

bull ExTI Expected Trace Identifier

bull FAS Frame Alignment Signal

bull FDI Forward Defect Indication

bull FDI-O Forward Defect Indication Overhead

bull FDI-P Forward Defect Indication Payload

bull FEC Forward Error Correction

bull GCC General Communication Channel

bull IaDI Intra-Domain Interface

bull IAE Incoming Alignment Error

Acronyms and Abbreviations

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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bull IrDI Inter-Domain Interface

bull JOH Justification Overhead

bull MFAS MultiFrame Alignment Signal

bull MFI Multiframe Indicator

bull MSI Multiplex Structure Identifier

bull NNI Network Node Interface

bull OCC Optical Channel Carrier

bull OCCo Optical Channel Carrier - overhead

bull OCCp Optical Channel Carrier - payload

bull OCCr Optical Channel Carrier with the Reduced Function

bull OCG Optical Carrier Groupbull OCGr Optical Carrier Group with the Reduced Function

Acronyms and Abbreviations

7182019 OTN Basics

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

7182019 OTN Basics

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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bull OCh Optical Channel with the Full Function

bull OChr Optical channel with the Reduced Function

bull OCI Open Connection Indication

bull ODTUG Optical channel Data Tributary Unit Group

bull ODTUjk Optical channel Data Tributary Unit j into k

bull ODU Optical Channel Data Unit

bull ODUk Optical Channel Data Unit-k

bull OH Overhead

bull OMS Optical Multiplex Section

bull OMU Optical Multiplex Unit

bull ONNI Optical Network Node Interfacebull OOS OTM Overhead Signal

bull OPS Optical Physical Section

Acronyms and Abbreviations

7182019 OTN Basics

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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bull OPU Optical Channel Payload Unit

bull OPUk Optical Channel Payload Unit-k

bull OSC Optical Supervisory Channel

bull OTH Optical Transport Hierarchybull OTM Optical Transport Module

bull OTN Optical Transport Network

bull OTS Optical Transmission Section

bull OTU Optical Channel Transport Unit

bull OTUk completely standardized Optical Channel Transport Unit-k

bull OTUkV functionally standardized Optical Channel Transport Unit-k

bull PCC Protection Communication Channel

bull PLD Payload

bull PMI Payload Missing Indication

Acronyms and Abbreviations

bull PRBS Pseudo Random Binary Sequence

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface

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bull PRBS Pseudo Random Binary Sequence

bull PSI Payload Structure Identifier

bull PT Payload Type

bull RES Reserved for future international standardization

bull SAPI Source Access Point Identifierbull Sk Sink

bull SM Section Monitoring

bull So Source

bull TCM Tandem Connection Monitoring

bull TSTributary Slot

bull TxTI Transmitted Trace Identifier

bull UNI User-to-Network Interface