Railway Operational Communication Solution OptiX OSN 1500 Product Overview

OptiX OSN 1500 Intelligent Optical Transmission System V200R012C00

Product Overview

Issue 03

Date 2012-11-15

HUAWEI TECHNOLOGIES CO., LTD.

Issue 03 (2012-11-15) Huawei Proprietary and Confidential

Copyright Huawei Technologies Co., Ltd. i

Copyright Huawei Technologies Co., Ltd. 2012. All rights reserved.

No part of this document may be reproduced or transmitted in any form or by any means without prior

written consent of Huawei Technologies Co., Ltd.

Trademarks and Permissions

and other Huawei trademarks are trademarks of Huawei Technologies Co., Ltd.

All other trademarks and trade names mentioned in this document are the property of their respective

holders.

Notice

The purchased products, services and features are stipulated by the contract made between Huawei and

the customer. All or part of the products, services and features described in this document may not be

within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements,

information, and recommendations in this document are provided "AS IS" without warranties, guarantees or

representations of any kind, either express or implied.

The information in this document is subject to change without notice. Every effort has been made in the

preparation of this document to ensure accuracy of the contents, but all statements, information, and

recommendations in this document do not constitute a warranty of any kind, express or implied.

Huawei Technologies Co., Ltd.

Address: Huawei Industrial Base

Bantian, Longgang

Shenzhen 518129

People's Republic of China

Website: http://www.huawei.com

Email: [email protected]

OptiX OSN 1500 Intelligent Optical Transmission

System

Product Overview Contents


Copyright Huawei Technologies Co., Ltd.

ii

Contents

1 Introduction.................................................................................................................................... 1

1.1 Positioning ....................................................................................................................................................... 1

1.2 Features ............................................................................................................................................................ 3

1.2.1 Universal Switch Architecture for Multiservice Grooming .................................................................... 3

1.2.2 Built-In WDM, Flexible Networking ...................................................................................................... 4

2 Hardware Structure and Software Architecture...................................................................... 5

2.1 Hardware Structure .......................................................................................................................................... 5

2.1.1 Cabinet .................................................................................................................................................... 5

2.1.2 OptiX OSN 1500A Subrack .................................................................................................................... 5

2.1.2.1 Structure ......................................................................................................................................... 5

2.1.2.2 Slot Allocation ............................................................................................................................... 6

2.1.3 OptiX OSN 1500B Subrack .................................................................................................................... 8

2.1.3.1 Structure ......................................................................................................................................... 8

2.1.3.2 Slot Allocation ............................................................................................................................... 9

2.2 Boards ............................................................................................................................................................ 12

3 Packet Functions and Features ................................................................................................. 24

3.1 Capacity ......................................................................................................................................................... 24

3.1.1 Packet Switching Capacity .................................................................................................................... 24

3.1.2 Slot Access Capacity of the OptiX OSN 1500A in Packet Mode ......................................................... 24

3.1.3 Slot Access Capacity of the OptiX OSN 1500B in Packet Mode ......................................................... 25

3.2 Services .......................................................................................................................................................... 26

3.2.1 Service Types ........................................................................................................................................ 27

3.2.2 Service Interfaces .................................................................................................................................. 27

3.2.3 Service Receiving Capacity .................................................................................................................. 28

3.3 Clock Synchronization ................................................................................................................................... 28

3.4 Equipment Level Protection ........................................................................................................................... 28

3.5 Network Level Protection .............................................................................................................................. 29

4 Functions and Features in TDM Mode ................................................................................... 31

4.1 Capacity ......................................................................................................................................................... 31

4.1.1 TDM Cross-Connect Capacity .............................................................................................................. 31


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Product Overview Contents



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4.1.2 Slot Access Capacity of the OptiX OSN 1500A in TDM Mode ........................................................... 31

4.1.3 Slot Access Capacity of the OptiX OSN 1500B in TDM Mode ........................................................... 32

4.2 Service ............................................................................................................................................................ 33

4.2.1 Service Types ........................................................................................................................................ 33

4.2.2 Service Interfaces .................................................................................................................................. 35

4.2.3 Service Receiving Capacity .................................................................................................................. 36

4.3 Equipment Level Protection ........................................................................................................................... 37

4.4 Network Level Protection .............................................................................................................................. 39

4.5 Built-in WDM Technology ............................................................................................................................. 41

5 Products and Application Scenarios ....................................................................................... 43

5.1 Overview of Network Topologies .................................................................................................................. 43

5.2 Typical Networking in Packet Mode .............................................................................................................. 45

5.2.1 Typical Networking Without Routers.................................................................................................... 45

5.2.2 Hybrid Networking with Routers .......................................................................................................... 45

5.3 Networking with the Packet Domain Overlapping the TDM Domain ........................................................... 47

5.4 Hybrid Networking with Other Huawei Equipment ....................................................................................... 48

5.4.1 Hybrid Networking with the PTN Equipment ...................................................................................... 48

5.4.2 Hybrid Networking with the RTN Equipment ...................................................................................... 50

6 OAM .............................................................................................................................................. 52

6.1 Administration and Auxiliary Interfaces ........................................................................................................ 52

6.2 DCN Management Scheme ............................................................................................................................ 53

6.3 Network Management .................................................................................................................................... 53

6.4 Alarm and Performance Management ............................................................................................................ 54

7 Technical Specifications ............................................................................................................ 55

7.1 Overall Specifications of the Equipment ........................................................................................................ 55

7.1.1 Cabinet Specification ............................................................................................................................ 55

7.1.2 Subrack Specification ........................................................................................................................... 56

7.1.3 Power Supply Specification .................................................................................................................. 59

7.1.4 Packet System Performance .................................................................................................................. 59

7.1.5 Timing and Synchronization Performance ............................................................................................ 62

7.2 Power Consumption and Weight of Boards.................................................................................................... 63

A Glossary ....................................................................................................................................... 69


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Product Overview 1 Introduction



1

1 Introduction 1.1 Positioning

The OptiX OSN 1500 intelligent optical transmission system (the OptiX OSN 1500 for short)

developed by Huawei is the next-generation intelligent optical transmission equipment.

The OptiX OSN 1500 is of a "universal switch" architecture. That is, the OptiX OSN 1500

can be used in packet mode or in TDM mode. When used with the other equipment of Huawei,

the OptiX OSN 1500 supports various networking applications, such as the pure packet mode

application, hybrid networking application (overlay networking of the packet mode and TDM

mode), and pure TDM mode application. By using a proper networking solution, the data

service and conventional SDH service can be processed in the optimal manner.

Technology

The OptiX OSN 1500 efficiently transmits voice, data, SAN/Video, and video services on the

same platform.

In packet mode, the OptiX OSN 1500 supports the following technologies:

Multiprotocol Label Switching (MPLS)

ETH PWE3 (Pseudo Wire Edge to Edge Emulation)

TDM PWE3

In TDM mode, the OptiX OSN 1500 supports the following technologies:

Synchronous digital hierarchy (SDH)

Plesiochronous digital hierarchy (PDH)

Ethernet

Asynchronous transfer mode (ATM)

Storage area network (SAN)/Video

Wavelength division multiplexing (WDM)

Digital data network (DDN)


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Equipment Exterior

There are two types of OptiX OSN 1500 system. Figure 1-1 shows the OptiX OSN 1500A

and Figure 1-2 shows the OptiX OSN 1500B. The differences between the OptiX OSN 1500A

and the OptiX OSN 1500B lie in the exterior and access capacity.

If a feature is supported differently by the OptiX OSN 1500A and the OptiX OSN 1500B, the document

specifies this situation. Otherwise, the feature is supported in the same manner.

Figure 1-1 OptiX OSN 1500A

Figure 1-2 OptiX OSN 1500B

Network Application

As shown in Figure 1-3, the OptiX OSN 1500 is mainly used at the access layer of the

metropolitan area network (MAN). The network application scenarios are described as

follows:

In TDM networking, can be networked with the other OptiX transmission equipment

(the OptiX OSN 9560, OptiX OSN 9500, OptiX OSN 7500 II, OptiX OSN 7500, OptiX

OSN 3500 II, OptiX OSN 2500, OptiX OSN 3500, OptiX OSN 500, and OptiX OSN

550) to optimize carrier investment, achieving a full range of networking solutions at the

access layer, convergence layer, and backbone layer.

With the packet switching technology, can constitute a packet data transmission network

with the other OptiX transmission equipment (the OptiX OSN 7500, OptiX OSN 7500 II,

OptiX OSN 3500, OptiX OSN 500, OptiX OSN 550, and OptiX RTN 900) to meet the

requirement for bearing IP services.

Can be flexibly networked with WDM equipment and Metro equipment.


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Can transparently transmit services over third-party Layer 2 networks, allowing

end-to-end configuration and management.

Figure 1-3 Network application of the OptiX OSN 1500

Ethernet SANPSTN ATM

OptiX OSN 9500

Backbone

layer

OptiX OSN 7500

OptiX OSN 2500

OptiX OSN 2500OptiX OSN 1500

Convergence

layer

Access

layer

GSM/CDMA/

WCDMA/TD-

SCDMA

OptiX OSN 3500

OptiX OSN 3500 II

OptiX OSN 3500OptiX OSN 3500 II

OptiX OSN 7500 II

OptiX OSN

550

OptiX OSN 500

OptiX OSN 9560

1.2 Features

This section describes the features of the OptiX OSN equipment in the aspects of system

architecture, networking, and technologies.

1.2.1 Universal Switch Architecture for Multiservice Grooming

OptiX OSN equipment uses a universal switch architecture for unified grooming of packet

services and TDM services. OptiX OSN equipment can work in packet mode, TDM mode, or

dual-domain (packet+TDM) mode.

The three modes can be smoothly switched by upgrading the software of a service board so

carriers' requirements on services and networks can be met. The smooth switching between

the three modes supports carriers' distributed smooth investment based on the development of

the technology and industrial chain.

Based on a universal switch architecture, OptiX OSN equipment uses the packet transmission

technology to perform efficient statistical multiplexing on data services so the transmission

cost of every bit is reduced. In addition, OptiX OSN equipment uses the Native technology to

transmit TDM services so voice services are transmitted with high quality.

Figure 1-4 shows the OptiX OSN equipment architecture.


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Figure 1-4 OptiX OSN equipment architecture

TDM Cross-connect

ATM/TDM

EoS

STM-N

STM-N

TDM equipment

architecture

Packet Switch

PWE3

Ethernet

Ethernet

Ethernet

Packet equipment

architecture

Universal Switch

ATM/TDM/EoS

Ethernet

PWE3

EoD

STM-N

Ethernet

Hybrid MSTParchitecture

+

Based on a universal switch architecture, OptiX OSN equipment unifiedly transmits packet

services such as 2G, 3G, and VIP private line services so network overlapping is avoided. In

addition, OptiX OSN equipment transmits TDM services. Carriers can constitute an

end-to-end packet network, dual-domain (packet+SDH) network, or hybrid (MSTP+routers)

network that bears L2+L3 services. This complete packet transmission solution allows an

evolution from TDM networks to all-IP networks.

1.2.2 Built-In WDM, Flexible Networking

The OptiX OSN equipment uses the built-in WDM technology to transmit several

wavelengths over one optical fiber. In this manner, the OptiX OSN equipment can be

interconnected with the WDM equipment.

For more information, click the following:4.5 Built-in WDM Technology


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Product Overview 2 Hardware Structure and Software Architecture



5

2 Hardware Structure and Software Architecture

2.1 Hardware Structure

The equipment can house various types of boards and can reside in several types of cabinets.

2.1.1 Cabinet

The OptiX OSN 1500 can be installed in an ETSI cabinet (300 mm or 600 mm deep) or a

19-inch standard cabinet or many other cabinets.

2.1.2 OptiX OSN 1500A Subrack

An OptiX OSN 1500A subrack consists of slots and boards that can be configured.

2.1.2.1 Structure

An OptiX OSN 1500A subrack has a two-layer structure. The subrack consists of a board area,

an auxiliary interface board area, a power interface board area, a fan area, and a cable routing

area.

Figure 2-1 shows the structure of an OptiX OSN 1500A subrack.


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Figure 2-1 Structure of an OptiX OSN 1500A subrack

1

2

3

4

5

1. Fan area 2. Processing board area 3. Power interface board area

4. Auxiliary interface board area 5. Cable routing area -

The functions of the areas are as follows:

Fan area: This area houses one fan module, which dissipates heat generated by the

equipment.

Processing board area: This area houses the service boards of the OptiX OSN 1500A.

Power interface board area: This area houses two power interface boards, which supply

power to the equipment.

Auxiliary interface board area: This area houses the line, tributary, and Ethernet

processing boards of the OptiX OSN 1500A.

Cable routing area: This area houses fiber jumpers and cables in a subrack.

An interface board is also called an access board or a transit board. An interface board provides physical

interfaces for optical signals and electrical signals, and transmits the optical signals or electrical signals

to the corresponding processing board.

2.1.2.2 Slot Allocation

An OptiX OSN 1500A subrack has only one layer, where 12 slots are available before

division of slots. After slot division, there are 14 slots. The mappings between the slots for the

access boards and the slots for the processing boards and the mappings between paired slots

are specified.

Figure 2-2 shows the slot layout (before slot division) of an OptiX OSN 1500A subrack.


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Figure 2-2 Slot layout of an OptiX OSN 1500A subrack (before slot division)

Slot 5 2.5 Gbit/s Slot 10 AUX

Slot 9 EOW

Slot 8

Slot 7

Slot 6

Slot 12

Slot 13

PCXLN

PCXLN

Slot 4

Slot 5

FAN

Slot 20

Slot 1 PIU Slot 11 PIU

Each of slots 12 and 13 in an OptiX OSN 1500A subrack can be divided into two half-width

slots. See Figure 2-3.

Figure 2-3 Slot layout of an OptiX OSN 1500A subrack (after slot division)


Slot 9 EOW

Slot 8

Slot 7

Slot 6

PCXLN

PCXLN

Slot 4

Slot 5

FAN

Slot 20

Slot 1 PIU Slot 11 PIU

Slot 2

Slot 3

Slot 12

Slot 13

The slots in an OptiX OSN 1500A subrack are allocated as follows:

Slots for line unit, SCC unit, cross-connect unit, and timing unit integrated boards: slots

4-5

Slots for processing boards before division of slots: slots 6-9 and 12-13

Slots for processing boards after division of slots: slots 2-3, 6-9, and 12-13

Slot for an orderwire board: slot 9 (also for a processing board)

Slot for an auxiliary interface board: slot 10

Slots for power interface boards: slots 1 and 11

Slot for a fan board: slot 20

Do not divide slots by yourself. If slots need to be divided, the division is performed before

delivery.

Mapping Between Slots for Interface Boards and Slots for Processing Boards

Table 2-1 lists the mapping between slots for interface boards and slots for processing boards.


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Table 2-1 Mapping between slots for interface boards and slots for processing boards

Slot for Processing Board Slot for Interface Board

Slot 12 Slots 6 and 7

Paired Slots

If overhead bytes pass through the backplane bus between two slots, the two slots are called

paired slots. Paired slots achieves automatic transparent transmission of overhead bytes such

as K bytes, D bytes, and E1 overhead bytes. This improves multiplex section protection (MSP)

switching performance and protects orderwire and DCC communication with other NEs even

after the system control board on the local NE cannot be detected. Table 2-2 lists paired slots.

Table 2-2 Paired slots

Slot Division Status Paired Slot

Before division of slots (Slot 4, Slot 5)

(Slot 6, Slot 9)

(Slot 7, Slot 8)

(Slot 12, Slot 13)

After division of slots (Slot 4, Slot 5)

(Slot 6, Slot 9)

(Slot 7, Slot 8)

(Slot 2, Slot 12)

(Slot 3, Slot 13)

2.1.3 OptiX OSN 1500B Subrack

An OptiX OSN 1500B subrack consists of slots and boards that can be configured.

2.1.3.1 Structure

An OptiX OSN 1500B subrack has a two-layer structure. The subrack consists of a processing

board area, an interface board area, an auxiliary interface board area, a power interface board

area, a fan area and a cable routing area.

Figure 2-4 shows the structure of an OptiX OSN 1500B subrack.


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Figure 2-4 Structure of an OptiX OSN 1500B subrack

1

2

3

4

45

6

1. Interface board area 2. Power interface board area 3. Fan area

4. Processing board area 5. Auxiliary interface board area 6. Cable routing area

If a label that contains "Enhanced Subrack" is attached to a subrack, it indicates that the subrack uses a

backplane of the later version.

The functions of the areas are as follows:

Interface board area: This area houses the tributary interface boards and Ethernet

interface boards of the OptiX OSN 1500B.

Power interface board area: This area houses two power interface boards, which supply

power to the equipment.

Fan area: This area houses one fan module, which dissipates heat generated by the

equipment.

Processing board area: This area houses the line, tributary, and Ethernet processing

boards of the OptiX OSN 1500B.

Auxiliary interface board area: This area provides alarm interfaces, an orderwire phone

interface, management and maintenance interfaces, and clock interfaces.

Cable routing area: This area houses fiber jumpers and cables in a subrack.

2.1.3.2 Slot Allocation

An OptiX OSN 1500B subrack consists of an upper layer and a lower layer. The upper layer

provides six slots for interface boards and power interface boards. The lower layer provides

11 slots (available before division of slots) for processing boards and auxiliary boards. After

slot division, there are 14 slots. The mappings between the slots for the access boards and the

slots for the processing boards and the mappings between paired slots are specified.

Figure 2-5 shows the slot layout of an OptiX OSN 1500B subrack (before slot division).


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Figure 2-5 Slot layout of an OptiX OSN 1500B subrack (before slot division)

2.5 Gbit/s Slot 10 AUX

Slot 9 EOW

Slot 8

Slot 7

Slot 6

PCXLN

PCXLN

FAN

Slot 20

Slot 5

Slot 12

Slot 13

Slot 4

Slot 5

Slot 14

Slot 15

Slot 16

Slot 17Slot 19 PIU

Slot 18 PIU

Slot 11

Slots 11-13 in an OptiX OSN 1500B subrack can be divided. As shown in Figure 2-6, divided

slots are in the dashed area. The slots in the left portion of the original slots are slots 1-3, and

the slots in the right portion of the original slots are slots 11-13.

Figure 2-6 Slot layout of an OptiX OSN 1500B subrack (after division of slots)

2.5 Gbit/

sSlot 10 AUX

Slot 9 EOW

Slot 8

Slot 7

Slot 6

PCXLN

PCXLN

FAN

Slot 20

Slot 5

Slot 2

Slot 3

Slot 4

Slot 5

Slot 14

Slot 15

Slot 16

Slot 17Slot 19 PIU

Slot 18 PIU

Slot 1

Slot 12

Slot 13

Slot 11

The slots in an OptiX OSN 1500B subrack are allocated as follows:

Slots for line unit, SCC unit, cross-connect unit, and timing unit integrated boards: slots

4-5

Slots for processing boards before division of slots: slots 6-9 and 11-13

Slots for processing boards after division of slots: slots 1-9 and 11-13

Slots for service interface boards: slots 14-17

Slot for an orderwire board: slot 9 (also for a processing board)

Slot for an auxiliary interface board: slot 10

Slots for power interface boards: slots 18 and 19

Slot for a fan board: slot 20


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Do not divide slots by yourself. If slots need to be divided, the division is performed before

delivery.

Mapping Between Slots for Interface Boards and Slots for Processing Boards

Table 2-3 lists the mapping between slots for interface boards and slots for processing boards.

Table 2-3 Mapping between slots for interface boards and slots for processing boards

Slot for Processing Board

Slot for Interface Board

Slot 2 Slot 14

Slot 7 Slot 15


Slot 3 Slot 16

Slot 8 Slot 17


The corresponding interface boards of the PD3, PL3, SEP1, and SPQ4 can be housed only in slots of

even numbers.

For the OptiX OSN 1500B, slots 7 and 12, slots 8 and 13, slots 6 and 11 are three couples of

slots:

The boards housed in slots 7 and 12 share the interface board housed in slot 15.

Therefore, slots 7 and 12 cannot house the boards with interfaces available on an

interface board.

The boards housed in slots 8 and 13 share the interface board housed in slot 17.


interface board.

The boards housed in slots 11 and 6 share the interface boards housed in slots 15 and 17.


interface board.

The boards in slots 6 and 11 are protection boards. The board in slot 6 provides protection for the boards

in slots 7 and 8, and the board in slot 11 provides protection for the boards in slots 12 and 13. According

to the tributary protection switching (TPS) mechanism, the boards in slots 6 and 11 share the interface

boards housed in slots 15 and 17.

Paired Slots

If overhead bytes pass through the backplane bus between two slots, the two slots are called

paired slots. Paired slots achieves automatic transparent transmission of overhead bytes such


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as K bytes, D bytes, and E1 overhead bytes. This improves multiplex section protection (MSP)

switching performance and protects orderwire and DCC communication with other NEs even

after the system control board on the local NE cannot be detected. Table 2-4 lists paired slots.

Table 2-4 Paired slots

Slot Division Status Paired Slot

Before division of slots (Slot 4, Slot 5)

(Slot 6, Slot 9)

(Slot 7, Slot 8)

(Slot 12, Slot 13)

After division of slots (Slot 4, Slot 5)

(Slot 6, Slot 9)

(Slot 7, Slot 8)

(Slot 1, Slot 11)

(Slot 2, Slot 12)

(Slot 3, Slot 13)

2.2 Boards

The equipment supports various types of boards.

For details on the board version replacement relationship between boards, see Board Version

Replacement in the Hardware Description.

Cross-Connect Boards and System Control Boards

Table 2-5 List of cross-connect boards and system control boards

Board Version Description

PCXLN R1 SCC unit, cross-connect

unit, and optical interface

unit integrated board

(supporting the packet

feature)


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Packet Processing Boards

Table 2-6 List of packet processing boards


PEGS2 Q1 2xGE Ethernet processing

board

PEGS1 R1 1xGE Ethernet processing

board

PEFS8 R1 8xFE Ethernet processing

board

PEF4F R1 4xFE optical processing

board

ML1 R1 Multi-protocol 16xE1

electrical processing board

SDH Boards

Table 2-7 List of SDH boards (OptiX OSN 1500A)


SL16 N1, N2, N3 1xSTM-16 optical interface

board

SL16A N1, N2, N3 1xSTM-16 optical interface

board

SF16 N1 1xSTM-16 optical interface

board (with the outband

FEC function)

SF16E N1 1xSTM-16 optical interface


EFEC function)

SLQ41 N3 4xSTM-4/STM-1 optical

interface board

SLQ4 N1, N2 4xSTM-4 optical interface

board

SLQ4A N1 4xSTM-4 optical interface

board

SLD4 N1, N2 2xSTM-4 optical interface

board

SLD4A N1 2xSTM-4 optical interface

board


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SLD4 R1 2xSTM-4 optical interface

board (divided slot)

SL4 R1 1xSTM-4 optical interface


SL4 N1, N2 1xSTM-4 optical interface

board

SL4A N1 1xSTM-4 optical interface

board

SLT1 N1 12xSTM-1 optical interface

board

SLO1 N2, N3 8xSTM-1 electrical interface

board

SLQ1 N1, N2 4xSTM-1 electrical interface

board

SLQ1A N1 4xSTM-1 electrical interface

board

SLQ1 R1 4xSTM-1 optical interface


SEP1 N1 2xSTM-1 line processing

board when interfaces are

available on the front panel

8xSTM-1 line processing


available on the

corresponding interface

board


board


board



Table 2-8 List of SDH boards (OptiX OSN 1500B)


SL16 N1, N2, N3 1xSTM-16 optical interface

board

SL16A N1, N2, N3 1xSTM-16 optical interface

board


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SF16 N1 1xSTM-16 optical interface


FEC function)

SF16E N1 1xSTM-16 optical interface


EFEC function)

SLQ41 N3 4xSTM-4/STM-1 optical

interface board


board


board

SLD4 N1, N2 2xSTM-4 optical interface

board

SLD4A N1 2xSTM-4 optical interface

board

SLD4 R1 2xSTM-4 optical interface





board


board

SLT1 N1 12xSTM-1 optical interface

board

EU08 N1 8xSTM-1 electrical interface

board

OU08 N1 8xSTM-1 optical/electrical

interface board (LC)

OU08 N2 8xSTM-1 optical interface

board (SC)

SLO1 N2, N3 8xSTM-1 optical interface

board


board


board

SLQ1 R1 4xSTM-1 optical interface



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EU04 N1 4xSTM-1 electrical interface

board

SEP1 N1 2xSTM-1 line processing


available on the front panel

8xSTM-1 line processing


available on the

corresponding interface

board


board


board



PDH Boards

Table 2-9 List of PDH boards (OptiX OSN 1500A)


PL3A N1, N2 3xE3/T3 service processing

board (Interfaces are

available on the front panel.)

PD1 R1, R2 32xE1 service processing

board

PL1 R1 16xE1 service processing

board

L12S R1 16xE1/T1 electrical

switching interface board

(120 ohms)

L75S R1 16xE1 electrical switching

interface board (75 ohms)

PFL1 N1 8xE1 optical processing

board

DXA N1 DDN service converging

and processing board


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Table 2-10 List of PDH boards (OptiX OSN 1500B)


SPQ4 N1, N2 4xE4/STM-1 electrical

processing board

MU04 N1 4xE4/STM-1 electrical

interface board

PQ3 N2 12xE3/T3 service

processing board

D34S N1 6xE3/T3 electrical switching

interface board

C34S N1 3xE3/T3 electrical switching

interface board

PD3 N1, N2 6xE3/T3 service processing

board

PL3 N1, N2 3xE3/T3 service processing

board

PL3A N1, N2 3xE3/T3 service processing

board (Interfaces are

available on the front panel.)

PQ1 N1, N2 63xE1 service processing

board

PQM N1 63xE1/T1 service

processing board

D12B N1 32xE1/T1 electrical


D12S N1 32xE1/T1 electrical


(120 ohms)

D75S N1 32xE1 electrical switching

interface board (75 ohms)

PD1 R1, R2 32xE1 service processing

board

PL1 R1 16xE1 service processing

board

PFL1 N1 8xE1 optical processing

board

TSB8 N1 8-port electrical switching

interface board

TSB4 N1 4-port electrical switching

interface board


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DX1 N1 DDN service accessing and

converging board

DXA N1 DDN service converging

and processing board

DM12 N1 DDN service interface board

EoS Boards

Table 2-11 List of EoS boards (OptiX OSN 1500A)


EFT8 N1 8xFE/16xFE Ethernet

transparent transmission

board

EFT8A N1 8xFE Ethernet transparent

transmission board

EFS4 N1, N2, N3 4xFE Ethernet processing

board

EFT4 R1 4xFE Ethernet transparent

transmission board (divided

slot)

EMS4 N1 4xGE and 16xFE Ethernet

processing board


processing board

EGS4 N1, N3 4xGE Ethernet processing

board

EGS4 N4 4xGE Ethernet processing

board

EGT2 N1, N2 2xGE Ethernet transparent

transmission board


board

Table 2-12 List of EoS boards (OptiX OSN 1500B)


EFT8 N1 8xFE/16xFE Ethernet



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board

EFT8A N1 8xFE Ethernet transparent

transmission board

EFS0A N1 16xFE Ethernet processing

board

EFS0 N1, N2, N4, N5 8xFE Ethernet processing

board

EFS4 N1, N2, N3 4xFE Ethernet processing

board

EFT4 R1 4xFE Ethernet transparent

transmission board (divided

slot)


processing board


processing board

EGS4 N1, N3, N4 4xGE Ethernet processing

board

EGT2 N1, N2 2xGE Ethernet transparent

transmission board


board

EFF8 N1 8x100M Ethernet optical

interface board

EFF8A N1 8x100M Ethernet optical

interface board

ETF8A N1 8x100M Ethernet

twisted-pair interface board

ETF8 N1 8x100M Ethernet

twisted-pair interface board

ETS8 N1 8x10/100M Ethernet twisted

pair interface switching

board


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20

ATM Boards

Table 2-13 List of ATM boards


ADL4 N1 1xSTM-4 ATM service

processing board

IDL4 N1 1xSTM-4 ATM service

processing board

ADQ1 N1 4xSTM-1 ATM service

processing board

IDQ1 N1 4xSTM-1 ATM service

processing board

RPR Boards

Table 2-14 List of RPR boards


EGR2 N2 2xGE ring processing board

EMR0 N2 12xFE and 1xGE ring

processing board

SAN/Video Boards

Table 2-15 List of SAN/video boards


VST4 N1 4-port video service


board

MST4 N1 4-port multi-service


board


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21

WDM Boards

Table 2-16 List of WDM boards (OptiX OSN 1500A)


CMR4 TN11 4-channel optical add/drop

multiplexing board

CMR TN11 2-channel optical add/drop

multiplexing board

MR2 TN11 2-channel optical add/drop

multiplexing board

MR2A N1 2-channel optical add/drop

multiplexing board

MR2B N1 2-channel optical add/drop

multiplexing board


multiplexing board

LWX N1 Arbitrary bit rate

wavelength conversion

board

FIB N1 Filter isolating board

Table 2-17 List of WDM boards (OptiX OSN 1500B)


CMR4 TN11 4-channel optical add/drop

multiplexing board

CMR TN11 2-channel optical add/drop

multiplexing board


multiplexing board

MR2A N1 2-channel optical add/drop

multiplexing board

MR2B N1 2-channel optical add/drop

multiplexing board

MR2C N1 2-channel optical add/drop

multiplexing board


multiplexing board

CMD2 N1 2-channel bidirectional

optical multiplexer and


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22


demultiplexer board

LWX N1 Arbitrary bit rate

wavelength conversion

board

FIB N1 Filter isolating board

Auxiliary Boards

Table 2-18 List of auxiliary boards


EOW R1 Orderwire processing board

AUX R1, R2 System auxiliary interface

board

AMU R1 Orderwire processing or

alarm cascading board

FAN R1 Fan board

Optical Amplifier Boards and Dispersion Compensation Boards

Table 2-19 List of optical amplifier boards and dispersion compensation boards


BPA N1, N2 One-channel power

amplifier and one-channel

pre-amplifier board

COA N1, 61, 62 Case-shaped optical

amplifier

OBU1 TN11, TN12 Optical booster amplifier

board

BA2 N1 Two-channel power

amplifier board

RPC01 N1 Forward Raman driving

board (external)

RPC02 N1 Backward Raman driving

board (external)


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23

Power Boards

Table 2-20 List of power boards


UPM - Uninterruptible power module

PIU R1 Power interface board (supporting OptiX OSN 1500B

subrack)

PIUA R1 Power interface board (supporting OptiX OSN 1500A

subrack)

PIUB R1 Power interface board (supporting enhanced OptiX OSN

1500B subrack)

PIUC R1 Power interface board (supporting enhanced OptiX OSN

1500A subrack)


System

Product Overview 3 Packet Functions and Features



24

3 Packet Functions and Features 3.1 Capacity

This section describes the switching capacity and slot access capacity of the OptiX OSN

equipment in packet mode.

3.1.1 Packet Switching Capacity

The OptiX OSN equipment uses packet cross-connect boards to support packet switching.

Table 3-1 provides the maximum switching capacity of the OptiX OSN 1500.

Table 3-1 Maximum switching capacity of the OptiX OSN 1500

Board Maximum Switching Capacity

Access Capacity of a Single Subrack

R1PCXLN 8 Gbit/s 8 Gbit/s

3.1.2 Slot Access Capacity of the OptiX OSN 1500A in Packet Mode

When different cross-connect boards are used, the access capacity of each slot on the

equipment varies.

Figure 3-1 shows the slot access capacity (before slot division) of the OptiX OSN 1500A.


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25

Figure 3-1 Slot access capacity (before slot division) of the OptiX OSN 1500A (packet mode)


Slot 9 1 Gbit/s

Slot 8 1 Gbit/s

Slot 7 1 Gbit/s

Slot 6 1 Gbit/sSlot 1 PIU Slot 11 PIU

Slot 12

Slot 13

2 Gbit/s

2 Gbit/s

R1PCXLN

R1PCXLN

Slot 4

Slot 5

FAN

Slot 20

In the OptiX OSN 1500A subrack, slot 12 and slot 13 can be divided into half-width slots.

Slot 12 can be divided into two half-width slots numbered slot 2 and slot 12, and slot 13 can

be divided into two half-width slots numbered slot 3 and slot 13. Figure 3-2 shows the slot

access capacity (after slot division) of the OptiX OSN 1500A.

Figure 3-2 Slot access capacity (after slot division) of the OptiX OSN 1500A (packet mode)


Slot 9 1 Gbit/s

Slot 8 1 Gbit/s

Slot 7 1 Gbit/s

Slot 6 1 Gbit/sSlot 1 PIU Slot 11 PIU

Slot 2 1 Gbit/s

Slot 3 1 Gbit/s

Slot 12 1 Gbit/s

Slot 13 1 Gbit/s

R1PCXLN

R1PCXLN

Slot 4

Slot 5

FAN

Slot 20

3.1.3 Slot Access Capacity of the OptiX OSN 1500B in Packet Mode


equipment varies.

Figure 3-3 shows the slot access capacity (before slot division) of the OptiX OSN 1500B.


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26

Figure 3-3 Slot access capacity (before slot division) of the OptiX OSN 1500B (packet mode)


Slot 9 1 Gbit/s

Slot 8 1 Gbit/s

Slot 7 1 Gbit/s

Slot 6 1 Gbit/s

2 Gbit/s

R1PCXLN

R1PCXLN

FAN

Slot 20

Slot 5

Slot 12

Slot 13

Slot 4

Slot 14

Slot 15

Slot 16

Slot 17Slot 19 PIU

Slot 18 PIU

Slot 11

2 Gbit/s

2 Gbit/s

In the OptiX OSN 1500B subrack, slots 11-13 can be divided into half-width slots. Slot 11

can be divided into two half-width slots numbered slot 1 and slot 11, slot 12 can be divided

into two half-width slots numbered slot 2 and slot 12, and slot 13 can be divided into two

half-width slots numbered slot 3 and slot 13. Figure 3-4 slot access capacity (after slot

division) of the OptiX OSN 1500B.

Figure 3-4 Slot access capacity (after slot division) of the OptiX OSN 1500B


Slot 9 1 Gbit/s

Slot 8 1 Gbit/s

Slot 7 1 Gbit/s

Slot 6 1 Gbit/s

Slot 12 1 Gbit/s

R1PCXLN

R1PCXLN

FAN

Slot 20

Slot 5

Slot 2 1 Gbit/s

Slot 3 1 Gbit/s

Slot 4

Slot 5

Slot 14

Slot 15

Slot 16

Slot 17Slot 19 PIU

Slot 18 PIU

Slot 1 1 Gbit/s

Slot 13 1 Gbit/s

Slot 11 1 Gbit/s

3.2 Services

This section describes the service types, interfaces, and maximum receiving capacity of each

service type supported by the OptiX OSN equipment in packet mode.


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27

3.2.1 Service Types

The OptiX OSN equipment can process the following Ethernet services, E1 ATM/IMA

services and CES services in packet mode.

Types of Ethernet services:

E-Line service

E-LAN service

E-AGGR service

Types of CES services:

E1 CES service

3.2.2 Service Interfaces

This section provides the Ethernet and CES service interfaces supported by the OptiX OSN

equipment in packet mode.

Table 3-2 lists the Ethernet service interfaces on the OptiX OSN equipment.

Table 3-2 Ethernet service interfaces on the OptiX OSN equipment

Type of Interface Description

FE electrical interface 100BASE-TX

FE optical interface 100BASE-FX/LX/VX/ZX

GE electrical interface 1000BASE-TX

GE optical interface 1000BASE-SX/LX/ZX/VX

Colored optical interface types: CWDM (40

km)

delander The R1PEFS8 uses the delander interface, and

the mapping high-density FE transfer box uses

the RJ45 connector.

Table 3-3 lists the CES and ATM/IMA service interfaces on the OptiX OSN equipment.

Table 3-3 CES and ATM/IMA service interfaces on the OptiX OSN equipment

Type of Interface

Description

CES (E1)

interface

E1 electrical interface: 2mmHM connector


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28

3.2.3 Service Receiving Capacity

The capacities of services that the OptiX OSN equipment can receive vary according to the

type and quantity of the configured boards.

Table 3-4 lists the maximum capacities of different services that the OptiX OSN equipment

can receive. The maximum capacity refers to the maximum number of services when a single

subrack receives only this specific type of service.

Table 3-4 Service receiving capacity of the OptiX OSN 1500 (in packet mode)

Service Maximum Receiving Capacity

OptiX OSN 1500A OptiX OSN 1500B

Fast Ethernet (FE electrical

interface) services

32 32

Fast Ethernet (FE optical

interface) services

24 24

Gigabit Ethernet (GE

electrical interface) services 8 8

Gigabit Ethernet (GE optical

interface) services

8 8

CES (E1) services 64 64

3.3 Clock Synchronization

The OptiX OSN equipment supports multiple synchronization technologies: traditional clock

synchronization, 1588v2 time and clock synchronization, synchronous Ethernet and circuit

emulation service (CES) adaptive clock recovery (ACR).

3.4 Equipment Level Protection

In packet mode, the equipment supports various equipment level protection schemes.

Table 3-5 lists the equipment level protection schemes supported by the OptiX OSN

equipment.

Table 3-5 Equipment level protection supported by the OptiX OSN 1500

Service Type Protection Scheme Description

Ethernet (in

packet mode)

LAG With no need for hardware upgrades, link

aggregation binds several Ethernet ports as a

logical port for higher link bandwidth and link

reliability.

Others 1+1 Hot Backup for For the OptiX OSN equipment, the


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29

Service Type Protection Scheme Description

the Cross-Connect,

Timing and SCC

Units

cross-connect, timing and SCC units are

integrated in the CXL series boards. The CXL

series boards adopt a 1+1 hot backup

mechanism so that the cross-connect and timing

units are protected.

1+1 hot backup for

the power interface

unit

The OptiX OSN equipment can access two

-48/-60 V DC power supplies by using two

R1PIU or R1PIUA or R1PIUB or R1PIUC

boards. These two power supplies provide a

mutual backup for each other. When either of

them fails, the other power supply provides a

backup to ensure normal operation of the

equipment.

1:N protection for the

+3.3 V power of the

board

The OptiX OSN equipment provides reliable

power backup for the +3.3 V power supply of

other boards by using the power backup unit on

the R1AUX or R2AUX board. When the power

supply of a board fails, the backup power supply

immediately provides backup to ensure the

normal operation of the board.

Intelligent fan The OptiX OSN 1500 uses six intelligent fan

modules to realize heat dissipation. The power

supplies of the six fan modules are of mutual

backup. The intelligent fans of the OptiX OSN

1500 provide the functions of high speed

intelligent operating and stopping. Certain fans

can be stopped, and an interface is provided to

stop the fans through software. The NE software

determines whether to stop the fans according to

the total power consumption specified for the

boards. In addition, command lines can be used

to manually stop certain fans.

Board protection

modes under

abnormal conditions

The board protection modes under abnormal

conditions include resumable upload (protection

against power down during software uploading),

undervoltage protection and overvoltage

protection, and over-temperature alarms.

3.5 Network Level Protection

The OptiX OSN equipment supports various network level protection schemes.

Table 3-6 lists the network level protection schemes supported by the OptiX OSN equipment.


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30

Table 3-6 Network level protection schemes supported by the OptiX OSN 1500

Network Level

Protection Scheme

Description

Ethernet Tunnel APS In the case of tunnel APS, an tunnel is set to

protect the working tunnel. In this case, when the

working tunnel fails, services are switched to the

protection tunnel for transmission and thus to

realize the service protection.

PW APS The PW APS uses the protection PW to protect

the working PW. When the working PW is faulty,

the services are switched to the protection PW

and remain unaffected.

LPT protection With LPT enabled, service protection can be

provided regardless of whether faults occur on a

service access node, a service network, or both on

a service access node and on a service network.


System

Product Overview 4 Functions and Features in TDM Mode



31

4 Functions and Features in TDM Mode 4.1 Capacity

The capacity covers the cross-connect capacity and slot access capacity.

4.1.1 TDM Cross-Connect Capacity

Different cross-connect boards have different cross-connect capacities.

Table 4-1 lists the cross-connect boards and the corresponding cross-connect capacities

supported by the OptiX OSN equipment.

Table 4-1 Cross-connect capacity of the OptiX OSN 1500

Board Higher Order Cross-Connect Capacity

Lower Order Cross-Connect Capacity

Access Capacity of a Single Subrack

R1PCXLN 60 Gbit/s

(384x384

VC-4s)

20 Gbit/s

(128x128

VC-4s, which

are equivalent

to 384x384

VC-3s or

8064x8064

VC-12s)

15 Gbit/s

(96x96

VC-4s)

4.1.2 Slot Access Capacity of the OptiX OSN 1500A in TDM Mode


equipment varies.

Figure 4-1 shows the slot access capacity (before slot division) of the OptiX OSN 1500A

when the R1PCXLN board is used.


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32

Figure 4-1 Slot access capacity (before slot division) of the OptiX OSN 1500A when the R1PCXLN board is used


Slot 9 1.25 Gbit/s

Slot 8 1.25 Gbit/s

Slot 7 1.25 Gbit/s

Slot 6 1.25 Gbit/sSlot 1 PIU Slot 11 PIU

Slot 2/12

Slot 3/13

2.5 Gbit/s

2.5 Gbit/s

2.5 Gbit/s

2.5 Gbit/s

Slot 4

Slot 5

FAN

Slot20

In the OptiX OSN 1500A subrack, slot 12 and slot 13 can be divided into half-width slots.

Slot 12 can be divided into two half-width slots numbered slot 2 and slot 12, and slot 13 can

be divided into two half-width slots numbered slot 3 and slot 13.

Figure 4-2 shows the slot access capacity (after slot division) of the OptiX OSN 1500A when

the R1PCXLN board is used.

Figure 4-2 Slot access capacity (after slot division) of the OptiX OSN 1500A


Slot 9 1.25 Gbit/s

Slot 8 1.25 Gbit/s

Slot 7 1.25 Gbit/s

Slot 6 1.25 Gbit/sSlot 1 PIU Slot 11 PIU

Slot 2 1.25 Gbit/s

Slot 3 1.25 Gbit/s

Slot 12 1.25 Gbit/s

Slot 13 1.25 Gbit/s

R1PCXLNSlot 4

Slot 5

FAN

Slot20

R1PCXLN

4.1.3 Slot Access Capacity of the OptiX OSN 1500B in TDM Mode


equipment varies.

Figure 4-3 shows the slot access capacity (before slot division) of the OptiX OSN 1500B

when the R1PCXLN board is used.


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33

Figure 4-3 Slot access capacity of the OptiX OSN 1500B (before slot division)

2.5 Gbit/

sSlot 10 AUX

Slot 9 622Mbit/s

Slot 8 622Mbit/s

Slot 7 622Mbit/s

Slot 6 622Mbit/s

2.5 Gbit/s

FAN

Slot 20

Slot 5

Slot 2/12

Slot 3/13

Slot 4

Slot 5

Slot 14

Slot 15

Slot 16

Slot 17Slot 19 PIU

Slot 18 PIU

Slot 1/11

2.5 Gbit/s

2.5 Gbit/s

2.5 Gbit/s

2.5 Gbit/s

In the OptiX OSN 1500B subrack, slots 11-13 can be divided into half-width slots. Slot 11

can be divided into two half-width slots numbered slot 1 and slot 11, slot 12 can be divided

into two half-width slots numbered slot 2 and slot 12, and slot 13 can be divided into two

half-width slots numbered slot 3 and slot 13.

Figure 4-4 shows the slot access capacity (after slot division) of the OptiX OSN 1500B when

the R1PCXLN board is used.

Figure 4-4 Slot access capacity (after slot division) of the OptiX OSN 1500B


Slot 9 622Mbit/s

Slot 8 622Mbit/s

Slot 7 622Mbit/s

Slot 6 622Mbit/s

FAN

Slot 20

Slot 5

Slot 2 1.25 Gbit/s

Slot 3 1.25 Gbit/s

Slot 4

Slot 5

Slot 14

Slot 15

Slot 16

Slot 17Slot 19 PIU

Slot 18 PIU

Slot 1 1.25 Gbit/s Slot 11 1.25 Gbit/s

Slot 12 1.25 Gbit/s

Slot 13 1.25 Gbit/s

R1PCXLN

R1PCXLN

4.2 Service

The supported services are SDH services, PDH services and many other services.

4.2.1 Service Types

The OptiX OSN equipment can process the following types of services: SDH, PDH, Ethernet,

RPR, ATM, DDN, and SAN/Video services.


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34

For details about supported service types, see Table 4-2.

Table 4-2 Service types that the OptiX OSN 1500 supports

Service Type Description

SDH services Standard SDH services: STM-1/STM-4/STM-16

Standard SDH concatenated services:

VC-4-4c/VC-4-8c/VC-4-16c/AU-3

Standard SDH virtual concatenation services: VC-4-Xv (X8), VC-3-Xv (X24), VC-12-Xv (X63)

SDH services with FEC: 2.666 Gbit/s

PDH services E1 (optical) service

E1 (electrical)/T1 service

E3/T3 service

E4 service

NOTE

With the E13/M13 function, the equipment can perform multiplexing and

demultiplexing between E1/T1 signals and E3/T3 signals.

Ethernet services Ethernet private line (EPL) service

Ethernet virtual private line (EVPL) service

Ethernet private LAN (EPLAN) service

Ethernet virtual private LAN (EVPLAN) service

RPR services EVPL service

EVPLAN service

ATM services Constant bit rate (CBR) service

Real-time variable bite rate (rt-VBR) service

Non real-time variable bite rate (nrt-VBR) service

Unspecified bit rate (UBR) service

DDN services Nx64 kbit/s (N = 1-31) service

Framed E1 service

SAN services Fiber channel (FC) service

Fiber connection (FICON) service

Enterprise systems connection (ESCON) service

Video services Digital video broadcast-asynchronous serial interface

(DVB-ASI) service

High definition-serial digital interface (HD-SDI) electrical

service

Standard definition-serial digital interface (SD-SDI) electrical

service


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35

4.2.2 Service Interfaces

Service interfaces include SDH service interfaces, PDH service interfaces and many other

service interfaces.

Interface Types

Table 4-3 lists the service interfaces of the OptiX OSN equipment.

Table 4-3 Service interfaces of the OptiX OSN 1500

Interface Description

SDH service interface STM-1 electrical interfaces: SMB

connectors

STM-1 optical interfaces: I-1, Ie-1,

S-1.1, L-1.1, L-1.2, Ve-1.2

STM-4 optical interfaces: I-4, S-4.1,

L-4.1, L-4.2, Ve-4.2

STM-16 optical interfaces: I-16, S-16.1,

L-16.1, L-16.2, L-16.2Je, V-16.2Je,

U-16.2Je

STM-16 optical interfaces (FEC):

Ue-16.2c, Ue-16.2d, Ue-16.2f

CWDM colored optical interfaces: 40

km, 80 km

DWDM colored optical interfaces: 120

km, 170 km, and 640 km

STM-16 optical interfaces that comply

with ITU-T G.692 can output fixed

wavelengths from 191.1 THz to 196.0

THz.

PDH service interface E1 electrical interfaces: DB44

connectors

T1 electrical interfaces: DB44

connectors

E3, T3 and E4 electrical interfaces: SMB

connectors

E1 optical interfaces: I-2M

Ethernet service interface 10BASE-T/100BASE-TX

100BASE-FX/LX/VX/ZX

1000BASE-SX/LX/ZX

DDN service interface RS449, EIA530, EIA530-A, V.35, V.24,

X.21 and Framed E1 interface

ATM service interface STM-1 optical interfaces: Ie-1, S-1.1,

L-1.1, L-1.2, Ve-1.2

STM-4 optical interfaces: S-4.1, L-4.1,


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36

Interface Description

L-4.2, Ve-4.2

E3 interfaces: E3 services are received

by the N1PD3/N1PL3/N1PL3A board.

E1 IMA interfaces: E1 IMA services are

received by the

N1PQ1/N1PQM/N2PQ1/R1PD1 board.

SAN/Video service interface Optical interfaces: FC100, FICON,

FC200, ESCON, DVB-ASI

SMB electrical interfaces: DVB-ASI,

HD-SDI, SD-SDI

Ue-16.2c, Ue-16.2d, Ue-16.2f, L-16.2Je, V-16.2Je, U-16.2Je, Ve-1.2, I-2M, and Ve-4.2 are optical

technical specifications defined by Huawei.

Optical Module Types

The OptiX OSN equipment supports SFP, eSFP, and single-fiber bidirectional optical

modules.

When the board is equipped with a single-fiber bidirectional optical module, the fiber

connected to the optical module can transmit and receive optical signals. Therefore, a lot of

optical fiber resources are saved.

In the case of different single-fiber bidirectional optical modules, the transmit or receive wavelengths are

different. Therefore, the single-fiber directional optical modules at the two ends must be of the same

type.

For details about optical modules, see SFP/eSFP in Hardware Description.

4.2.3 Service Receiving Capacity

The capacities of services that the OptiX OSN 1500 can receive vary according to the type

and quantity of the configured boards.

Table 4-4 lists the maximum capacities of different services that the OptiX OSN 1500 can

receive.

Table 4-4 Service receiving capacity of the OptiX OSN 1500 in TDM mode

Service Type Maximum Receiving Capacity


STM-16 standard or

concatenated services

4 5

STM-16 (FEC) services 2 3

STM-16 (EFEC) services 2 3


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37

Service Type Maximum Receiving Capacity


STM-4 standard or

concatenated services

10 22

STM-1 standard services 42 54

STM-1 (electrical) services 4 18

E4 services - 8

E3/T3 services 6 27

E1 (electrical) services 64 190

E1 (optical) services 16 24

T1 services 64 190

FE services 32 56

GE services 8 12

ATM (STM-1) services 8 12

ATM (STM-4) services 2 3

ESCON services 8 12

FICON/FC100 services 4 6

FC200 services 2 3

DVB-ASI (optical) services 8 12

DVB-ASI (electrical)

services

8 12

HD-SDI (electrical) services 2 3

SD-SDI (electrical) services 8 12

Nx64 kit/s services (N:

1-31)

- 16

Framed E1 services - 16

4.3 Equipment Level Protection

The OptiX OSN equipment provides several equipment level protection schemes.

Table 4-5 shows the equipment level protection supported by the OptiX OSN equipment.


System




38

Table 4-5 Equipment level protection

Object Protected

Protection Scheme

Description

Ethernet

(in TDM

mode)

PPS BPS, a board-level 1+1 protection scheme, is used to

protect services on an entire Ethernet board. When the

working board fails, BPS enables services to be

switched from the working board to the protection

board in a customer-accepted period.

PPS PPS, a port-level 1+1 protection scheme, is used to

protect services on specific ports. When the working

port fails, PPS enables services to be switched from the

working port to the protection port in a

customer-accepted period.

LAG In an LAG, multiple links attached to the same

equipment are aggregated to work as a logical link.

This helps increase bandwidth and link availability.

DLAG A DLAG is a protection group that aggregates two

corresponding ports on two boards of the same type. It

provides 1+1 protection for the inter-board ports.

Others TPS protection Tributary protection switching (TPS) enhances service

reliability in a TPS protection group. When TPS

detects a faulty working service board, it rapidly

switches services to the protection service board.

1+1 protection for

ATM boards

The OptiX OSN equipment supports board-level 1+1

protection with some ATM boards.

1+1 Hot Backup

for the

Cross-Connect,

Timing and SCC

Units

For the OptiX OSN equipment, the cross-connect,

timing and SCC units are integrated in the CXL series

boards. The CXL series boards adopt a 1+1 hot backup

mechanism so that the cross-connect and timing units

are protected.

Protection for the

wavelength

conversion unit

The OptiX OSN equipment supports two types of

N1LWX (arbitrary bit rate wavelength conversion

unit):

Dual-fed and selective-receiving N1LWX: supports

intra-board protection. One board can implement

optical channel protection.

Single-fed and single-receiving N1LWX: supports

inter-board protection, to be specific, 1+1 hot

backup protection.

1+1 hot backup for

the power interface

unit

The OptiX OSN equipment can access two -48/-60 V

DC power supplies by using two R1PIU or R1PIUA or

R1PIUB or R1PIUC boards. These two power supplies

provide a mutual backup for each other. When either of

them fails, the other power supply provides a backup to

ensure normal operation of the equipment.

1:N protection for The OptiX OSN equipment provides reliable power


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39

Object Protected

Protection Scheme

Description

the +3.3 V power

of the board

backup for the +3.3 V power supply of other boards by

using the power backup unit on the R1AUX or R2AUX

board. When the power supply of a board fails, the

backup power supply immediately provides backup to

ensure the normal operation of the board.

Intelligent fan The OptiX OSN 1500 uses six intelligent fan modules

to realize heat dissipation. The power supplies of the

six fan modules are of mutual backup. The intelligent

fans of the OptiX OSN 1500 provide the functions of

high speed intelligent operating and stopping. Certain

fans can be stopped, and an interface is provided to

stop the fans through software. The NE software

determines whether to stop the fans according to the

total power consumption specified for the boards. In

addition, command lines can be used to manually stop

certain fans.

Board protection

modes under

abnormal

conditions

The board protection modes under abnormal conditions

include resumable upload (protection against power

down during software uploading), undervoltage

protection and overvoltage protection, and

over-temperature alarms.

NOTE

The OptiX OSN equipment supports coexistence of three TPS protection groups of different types.

4.4 Network Level Protection

The OptiX OSN equipment supports several network level protection schemes.

Table 4-6 lists the network level protection schemes supported by the OptiX OSN equipment.

Table 4-6 Network level protection schemes supported by the OptiX OSN 1500

Network Level Protection

Protection Scheme

Description

SDH

protection

Linear MSP The Linear Multiplex Section Protection (LMSP)

scheme is applicable to a point-to-point physical

network, providing MS-layer protection for the service

between two points. The OptiX OSN equipment

supports 1+1 and 1:N LMSP.

MSP ring The multiplex section protection ring (MSP ring)

scheme provides MS-level protection for services

between nodes on a ring network. The OptiX OSN

equipment supports three types of MSP ring: two-fiber unidirectional MSP, two-fiber bidirectional MSP, and


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40


Protection Scheme

Description

four-fiber bidirectional MSP.

Subnetwork

connection

protection

(SNCP),

subnetwork

connection

multi-protection

(SNCMP) and

subnetwork

connection tunnel

protection

(SNCTP)

The SNCP scheme protects the service that is across

subnets. The SNCP is based on the dual fed and

selective receiving mechanism. The subnet can be a

chain, a ring, or a more complex network.

The SNCMP scheme provides functions similar to

the SNCP scheme. With regard to their difference,

the SNCP scheme provides 1+1 protection and the

SNCMP scheme provides N+1 protection (in which

multiple protection paths protect one working path).

The SNCTP scheme provides protection paths at

the VC-4 level. When the working path is faulty, all

its services can be switched to the protection path.

Dual-node

interconnection

(DNI) protection

The DNI network topology protection scheme

effectively enhances the reliability of inter-ring

services. The DNI realizes the protection of services

between two rings, which are networked by the

equipment from different vendors and adopt different

protection schemes. The DNI provides protection in the

case of fiber failure and node failure.

Fiber-shared

virtual trail

protection

When the fiber-shared virtual trail protection is used,

an STM-16, STM-4 or even STM-1 optical channel is

logically divided into several lower order or higher

order channels. These channels are then connected to

other links at the channel layer to form rings. In the

case of the rings at the channel layer, protection

schemes such as the MSP, SNCP and non-protection

can be set accordingly.

Optical-path-shar

ed MSP

In the optical-path-shared MSP scheme, an optical

interface can be configured into multiple MSP groups,

so multiple MSP rings can share the same fiber and

optical interface.

Ethernet

protection

LPT As a protection scheme based on links, LPT enables

the pass-through of the states of the point-to-point link

and point-to-multipoint link. In this manner, LPT

realizes the network level protection for the

transmission of point-to-point private line services and

for the transmission of the point-to-multipoint

convergence services.

LCAS The LCAS function can be used to dynamically adjust

the bandwidth and protect virtual concatenation,

whereby making the network more robust and flexible.

STP/RSTP The STP and RSTP are used in the loop network. The

two protocols realize routing redundancy by adopting

certain algorithms and break the loop network into a


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41


Protection Scheme

Description

loop-free tree network, thus preventing packets from

increasing and cycling in an endless manner in the loop

network. In this manner, the application of the two

protocols can prevent the occurrence of the broadcast

storm and MAC address table flapping.

The RSTP is an optimized version of the STP and

implements all the functions of the STP. With the

application of the RSTP, the network convergence is

quicker. In addition, in the case of a link failure, the

blocked ports can be enabled to restore services

quickly.

Resilient packet

ring (RPR)

protection

Resilient packet ring (RPR) is an emerging Layer 2

link technology that integrates the multiprotocol label

switching (MPLS) and virtual metropolitan area

network (VMAN) technologies. RPR has a fixed

point-to-multipoint architecture, provides the statistical

multiplexing function, realizes fairness sharing of

bandwidths, accesses large granularities, and features

high-efficient bandwidth utilization.

ATM

protection

VP-Ring/VC-Rin

g protection

The OptiX OSN equipment provides protection for

virtual paths (VPs) and virtual channels (VCs), and

protects ATM services through a dual fed and selective

receiving mechanism.

4.5 Built-in WDM Technology

The equipment supports a built-in WDM technology, which enables the transmission of

several wavelengths in one fiber.

The OptiX OSN 1500 provides the built-in WDM technology. The functions of the equipment

are as follows:

Standard DWDM wavelengths that comply with ITU-T G.694.1 can be added or

dropped.

Standard CWDM wavelengths that comply with ITU-T G.694.2 can be added or

dropped.

A set of equipment can be configured into an Optical Terminal Multiplexer (OTM) or an

Optical Add/Drop multiplexer (OADM), or both.

Optical add/drop multiplexing boards have concatenation ports which can be used for

expansion or for adding/dropping multiple wavelengths through concatenation.

The equipment supports Raman amplifiers which can be used in long-distance signal

transmission.

The equipment supports the automatic gain control technology, which enables the gain of each working wavelength to change within an allowed range in all scenarios.


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42

The equipment supports the forward error correction (FEC) technology, which can

correct the errors generated during signal transmission and therefore improve the

tolerance of signal-to-noise ratio at the receive end and extend the length of relay

sections.


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Product Overview 5 Products and Application Scenarios



43

5 Products and Application Scenarios 5.1 Overview of Network Topologies

The OptiX OSN equipment supports a wide range of network topologies applicable to the

packet mode, TDM mode, and hybrid mode. The OptiX OSN equipment supports end-to-end

management by interconnecting with or traversing third-party equipment or a third-party

network.

Basic Network Topologies

Table 5-1 lists the basic network topologies that the OptiX OSN equipment supports.

Table 5-1 Basic network topologies that the OptiX OSN equipment supports

Network Topology Legend

1 Chain

2 Ring

3 Tangent rings


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44

Network Topology Legend

4 Intersecting

rings

5 Ring with chain

6 Dual node

interconnection

(DNI)

7 Hub

Legend:

MADM ADM TM

NE Categories

The OptiX OSN equipment supports separate and combined configuration of the following

types: terminal multiplexer (TM), add/drop multiplexer (ADM), and multiple add/drop

multiplexer (MADM).


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45

5.2 Typical Networking in Packet Mode

In packet mode, the equipment mainly supports two different typical networking scenarios,

depending on whether routers are used.

5.2.1 Typical Networking Without Routers

OptiX OSN equipment can construct a network where TDM services and packet services are

transmitted between base stations and the RNC without assistance from routers.

Figure 5-1 shows the typical networking diagram.

Figure 5-1 Typical networking diagram (without any routers)

GE ring

FE

NodeB

FE

NodeB

RNC

NE1

NE2

NE3

NE4

NE5

NE6

NE7

NE8

Standby LSP/PW

10GE ring

FE/GE

PWE3 L2

Active LSP/PW

10GE ring

FE/GE

As shown in Figure 5-1, NE1 and NE2 are generally OptiX OSN 1500 or OptiX OSN 500 or

OptiX OSN 550 NEs; NE3, NE4, NE5, and NE6 are generally OptiX OSN 3500 or OptiX

OSN 7500 or OptiX OSN 7500 II NEs; NE7 and NE8 are generally OptiX OSN 7500 or

OptiX OSN 7500 II NEs.

FE services from NodeBs at the access layer are aggregated to the GE packet ring through

NE1 and NE2, then to the 10GE packet rings through NE3 and NE6, and finally to the RNC.

5.2.2 Hybrid Networking with Routers

Hybrid MSTP equipment on a Layer 2 network can be connected to an RNC through routers,

which provide powerful Layer 3 switching capabilities and enhance network scalability.

Service Bearing

This solution supports TDM services and Ethernet/IP services.

TDM services are carried by single-homed SDH equipmen

Documents

Railway Operational Communication Solution OptiX OSN 1500 Product Overview