ZXMP S325(V2.00) Hardware Manual

ZXMP S325SDH Based Multi-Service Node Equipment

Hardware Manual

Version 2.00

ZTE CORPORATION ZTE Plaza, Keji Road South, Hi-Tech Industrial Park, Nanshan District, Shenzhen, P. R. China 518057 Tel: (86) 755 26771900 800-9830-9830 Fax: (86) 755 26772236 URL: http://support.zte.com.cn E-mail: [email protected]

http://support.zte.com.cn/

mailto:[email protected]

LEGAL INFORMATION Copyright © 2006 ZTE CORPORATION. The contents of this document are protected by copyright laws and international treaties. Any reproduction or distribution of this document or any portion of this document, in any form by any means, without the prior written consent of ZTE CORPORATION is prohibited. Additionally, the contents of this document are protected by contractual confidentiality obligations. All company, brand and product names are trade or service marks, or registered trade or service marks, of ZTE CORPORATION or of their respective owners. This document is provided “as is”, and all express, implied, or statutory warranties, representations or conditions are disclaimed, including without limitation any implied warranty of merchantability, fitness for a particular purpose, title or non-infringement. ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance on the information contained herein. ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subject matter of this document. Except as expressly provided in any written license between ZTE CORPORATION and its licensee, the user of this document shall not acquire any license to the subject matter herein. ZTE CORPORATION reserves the right to upgrade or make technical change to this product without further notice. Users may visit ZTE technical support website http://ensupport.zte.com.cn to inquire related information. The ultimate right to interpret this product resides in ZTE CORPORATION.

Revision History

Date Revision No. Serial No. Reason for Issue

2008/04/23 R1.0 sjzl20081227 First edition

ZTE CORPORATION Values Your Comments & Suggestions! Your opinion is of great value and will help us improve the quality of our product documentation and offer better services to our customers.

Please fax to: (86) 755-26772236; or mail to Documentation R&D Department, ZTE CORPORATION, ZTE Plaza, A Wing, Keji Road South, Hi-Tech Industrial Park, Shenzhen, P. R. China 518057.

Thank you for your cooperation!

Document Name ZXMP S325(V2.00) SDH Based Multi-Service Node Equipment Hardware Manual

Product Version V2.00 Document Revision Number R1.0

Serial No. sjzl20081227 Equipment Installation Date

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Contents

About this Manual............................................................. i

Purpose................................................................................ i Intended Audience ................................................................. i Prerequisite Skill and Knowledge .............................................. i What is in This Manual............................................................ i Related Documentation.......................................................... ii Conventions......................................................................... ii How to Get in Touch............................................................. iii

Chapter 1.......................................................................... 5

Cabinet ............................................................................. 5

Cabinet Structure............................................................5

Basic Cabinet Fittings ......................................................7

Cabinet Configuration .................................................... 10

Chapter 2........................................................................11

Equipment Composition.................................................11

Structural Parts ............................................................ 11

Subrack....................................................................... 15

Fan Unit....................................................................... 17

Dustproof Unit .............................................................. 18

Power Distribution Box................................................... 19

Chapter 3........................................................................23

Boards ............................................................................23

Overview ..................................................................... 23 Subsystem Overview ........................................................... 23 Board Overview .................................................................. 24 Board Slots ........................................................................ 27

Board Structure ............................................................ 28

Functional/Service Interface Board ........................................ 28

Functional/Service Board......................................................29

Motherboard ................................................................ 30

NCP Unit...................................................................... 31 Overview ...........................................................................31 NCP Board..........................................................................31 SAI Board ..........................................................................36

Optical Line, Cross-connect, and Clock Unit....................... 39

Overview ...........................................................................39 OCS16 Board......................................................................39 OCS4 Board .......................................................................45

OL16x1 Board .............................................................. 50

OL1/4x4 Board ............................................................. 53

OL1/4 Subsystem ......................................................... 57 Overview ...........................................................................57 LP1x1/LP1x2/LP4x1/LP4x2 Boards .........................................59 OIS1x1/OIS1x2/OIS4x1/OIS4x2 Boards .................................61 ESS1x2 Board.....................................................................63 BIS1 Board.........................................................................64 Subsystem Configuration Example .........................................65

OA Board ..................................................................... 66

EP1 Subsystem............................................................. 70 Overview ...........................................................................70 EPE1x21/EPT1x21/EPE1B Boards...........................................71 ESE1x21 Board ...................................................................75 BIE1x21 Board....................................................................77 Subsystem Configuration Example .........................................78

EP3 Subsystem............................................................. 79 Overview ...........................................................................79 EP3x3 Board.......................................................................80 ESE3x3 Board.....................................................................82 BIE3x3 Board .....................................................................84 Subsystem Configuration Example .........................................84

EOS Subsystem ............................................................ 86 Overview ...........................................................................86 SFEx6 Board.......................................................................87 EIFEx4 Board......................................................................90 BIFE Board.........................................................................92 OIS1x4 Board .....................................................................93

Subsystem Configuration Example......................................... 94

ATM Subsystem ............................................................ 96

Overview ........................................................................... 96 AP1x4 Board ...................................................................... 97 Subsystem Configuration Example......................................... 99

RPR Subsystem .......................................................... 101 Overview ......................................................................... 101 RSEB Board ..................................................................... 102 Subsystem Configuration Example....................................... 105

PWR Board................................................................. 106

Appendix A...................................................................109

Terminologies ..............................................................109

Appendix B...................................................................113

Abbreviations...............................................................113

Figures..........................................................................117

Tables...........................................................................121


Confidential and Proprietary Information of ZTE CORPORATION i

About this Manual

Purpose

This manual describes ZXMP S325 cabinet structure, equipment composition, and boards.

Intended Audience

This document is intended for engineers and technicians who perform system operation activities on ZXMP S325 SDH Based Multi-Service Node Equipment.

Prerequisite Skill and Knowledge

Users must have SDH basic technology to use this document effectively. Familiarity with the following is helpful:

ZXMP S325 system and its various components

Equipment structure

Boards

What is in This Manual

This manual contains the following chapters:

T AB L E 1 . C H AP T E R S U M M AR Y

Chapter Summary

Chapter 1 Cabinet Describes the structure, basic fittings, and configuration of the ZXMP S325 cabinet

Chapter 2 Equipment Composition

Describes the components of the ZXMP S325 equipment

Chapter 3 Boards Describes the boards of the ZXMP S325

ZXMP S325 (V2.00) Hardware Descriptions

ii Confidential and Proprietary Information of ZTE CORPORATION

Related Documentation

The following documentation is related to this manual:

Unitrans ZXMP S325(V2.00) SDH Based Multi-Service Node Equipment System Descriptions

Unitrans ZXMP S325(V2.00) SDH Based Multi-Service Node Equipment Product Descriptions

Unitrans ZXMP S325(V2.00) SDH Based Multi-Service Node Equipment Installation Manual

Unitrans ZXMP S325(V2.00) SDH Based Multi-Service Node Equipment Maintenance Manual

Unitrans ZXMP S325(V2.00) SDH Based Multi-Service Node Equipment Operation Instructions

Conventions

ZTE documents employ the following typographical conventions.

T AB L E 2 . TY P O G R AP H I C AL C O N V E N T I O N S

Typeface Meaning

Italics References to other Manuals and documents.

“Quotes” Links on screens.

Bold Menus, menu options, function names, input fields, radio button names, check boxes, drop-down lists, dialog box names, window names.

CAPS Keys on the keyboard and buttons on screens and company name.

Constant width Text that you type, program code, files and directory names, and function names.

[ ] Optional parameters.

Mandatory parameters.

| Select one of the parameters that are delimited by it.

Note: Provides additional information about a certain topic.

Checkpoint: Indicates that a particular step needs to be checked before proceeding further.

Tip: Indicates a suggestion or hint to make things easier or more productive for the reader.

Typographical Conventions

About this Manual

Confidential and Proprietary Information of ZTE CORPORATION iii

T AB L E 3 . M O U S E OP E R AT I O N C O N V E N T I O N S

Typeface Meaning

Click Refers to clicking the primary mouse button (usually the left mouse button) once.

Double-click Refers to quickly clicking the primary mouse button (usually the left mouse button) twice.

Right-click Refers to clicking the secondary mouse button (usually the right mouse button) once.

Drag Refers to pressing and holding a mouse button and moving the mouse.

How to Get in Touch

The following sections provide information on how to obtain support for the documentation and the software.

If you have problems, questions, comments, or suggestions regarding your product, contact us by e-mail at [email protected]. You can also call our customer support center at (86) 755 26771900 and (86) 800-9830-9830.

ZTE welcomes your comments and suggestions on the quality and usefulness of this document. For further questions, comments, or suggestions on the documentation, you can contact us by e-mail at [email protected]; or you can fax your comments and suggestions to (86) 755 26772236. You can also browse our website at http://support.zte.com.cn, which contains various interesting subjects like documentation, knowledge base, forum and service request.

Mouse Operation Conventions

Customer Support

Documentation Support


iv Confidential and Proprietary Information of ZTE CORPORATION


Confidential and Proprietary Information of ZTE CORPORATION 5

C h a p t e r 1

Cabinet

Cabinet Structure ZXMP S325 cabinet employs the “IEC 19-inch cabinet +

subrack” structure. The cabinet and subracks satisfy the requirements of operation and maintenance from the front.

ZXMP S325 cabinet comprises metal materials, featuring excellent electromagnetic shielding performance and heat dissipation performance.

The three cabinet heights for ZXMP S325 are: 2000 mm, 2200 mm, and 2600 mm.

Table 4 lists the cabinet dimensions and weights.

T AB L E 4 . C AB I N E T D I M E N S I O N S AN D W E I G H T S

Dimensions (Height × Width × Depth)(Unit: mm) Weight (Unit: kg)

2000 × 600 × 300 70

2000 × 600 × 300 80

2600 × 600 × 300 90

Notes:

The weights are those of empty cabinets.

ZTE can provide the cabinet 600 mm deep as per user requirement.

The cabinet front door, rear door, and side panels are always detached in the figures shown in this manual in order to show the equipment inner structure clearly.

In practice, the front door is opened from the left, and the side panels cannot be detached.

Description


6 Confidential and Proprietary Information of ZTE CORPORATION

Figure 1 illustrates the cabinet outline dimensions:

F I G U R E 1 . ZXMP S325 C AB I N E T S OU T L I N E S

Unit: mm

Outline Diagram

Chapter 1 - Cabinet


Basic Cabinet Fittings Figure 2 illustrates the basic fittings of a 2200 mm high cabinet. Table 5 briefly describes these fittings.

F I G U R E 2 . B AS I C F I T T I N G S O F A 2200 M M H I G H ZXMP S325 C AB I N E T

1. Cable securing plate 2. Cable wiring clip 3. Cabinet cabling area 4. Ring trip switch 5. Ring trip reset button 6. Grounding copper busbar 7. Mounting bracket 8. Small cabling door 9. Power cable outlet 10. Top outlet 11. Alarm indicator board 12. Hook for antistatic wrist strap 13. Socket for antistatic wrist strap 14. Door lock 15. Front door 16. Bottom outlet

Overview



T AB L E 5 . ZXMP S325 B AS I C F I T T I N G D E S C R I P T I O N S

Name Location Description

Alarm indicator board

In the upper part of the front door

Equipped with indicators to indicate the working states of subracks and power distribution box.

Power cable outlet

At the bottom and top of the cabinet

It is used to lead external power cable out of the cabinet. A small movable door is designed on the outlet hole to close the cabinet after cabling.

Cable outlet

At the bottom and top of the cabinet

It is used to lead the service cables and fiber pigtails other than external power cable out of the cabinet.

Cabinet cabling area

Area inside the cabinet and close to the side panel

The cabling area has an openable and detachable small door and a cable fixing plate. Cabling clips can be installed on the fixing plate for the proper cabling of 2 M cables. The number of cabling clips can be configured flexibly according to the quantity of the cables.

Ring trip switch

In the middle inside the cabinet cabling area

Controls ring trip status

Ring trip reset button


Resets ring trip status

Grounding copper busbar

At the back in the cabinet

It connects to the grounding terminals to the cabinet side panel, front door, subrack, power alarm box, and other components via the grounding cables to implement perfect electrical connections of the entire cabinet shell. (The grounding terminals of the subrack, power alarm box, and other components are located on the corresponding components. Figure 3 shows the locations of the grounding terminals on the side panel and the cabinet front door.)

Mounting bracket

Fixed in any place in the cabinet framework

Supports subracks, power alarm box, and other components

Socket for antistatic wrist strap


For installing the antistatic wrist strap

Installation hole

At the bottom and top of the cabinet For fixing the cabinet

Heat dissipation holes

On the front door, back, top, and the bottom of the cabinet

For good heat-dissipation performance of the cabinet

Chapter 1 - Cabinet


ZXMP S325 cabinet is set with the grounding copper busbar inside the cabinet, and the grounding terminals on the cabinet front door and side panel, as shown in Figure 3.

F I G U R E 3 . GR O U N D I N G TE R M I N AL S AN D GR O U N D I N G C O P P E R B U S B AR O F ZXMP S325 CAB I N E T

1. Grounding copper busbar 2. Grounding terminal on side panel 3. Grounding terminal on front door

Grounding Terminals



Cabinet Configuration The different cabinet configurations are similar. ZXMP S325

equipment with basic configuration comprises cabinet, subracks, power distribution box, and dustproof unit.

Table 6 lists the configuration of the ZXMP S325 in a single cabinet.

T AB L E 6 . C O N F I G U R AT I O N O F ZXMP S325 I N A S I N G L E C AB I N E T

Cabinet Height (Unit: mm)

Effective Height

Number of Power Distribution Box (Height: 3U)

Number of Subrack (Height: 5U)

2000 42U 1 4

2200 47U 1 4

2600 56U 1 4

Notes: 1. 1 U = 44.45 mm 2. The capacity of 2 Mbps service and cablings in full configuration has been

taken into account. 3. The power distribution box is the unified one of ZTE transmission equipment

with the height of 3U. 4. The subracks are arranged top down in the order of subrack 1, subrack 2,

subrack 3, and subrack 4.

The ZXMP S325 equipment can cooperate with other ZTE SDH equipment flexibly, such as ZXMP S320, ZXMP S330, ZXMP S360, ZXMP S390, ZXMP S380, and ZXMP S385.

Configuration Description

Cooperation with Other

ZTE SDH Equipment


C h a p t e r 2

Equipment Composition

Structural Parts Figure 4 illustrates the structural parts of the ZXMP S325.

F I G U R E 4 . S T R U C T U R AL P A R T S O F ZXMP S325

Note: NCP board also provides antistatic wrist strap socket. Figure 4 does not mention it to make the figure clear and concise.

The dimensions and weights of the structural parts are listed in Table 7.

T AB L E 7 . D I M E N S I O N S AN D W E I G H T S O F ZXMP S325 S T R U C T U R AL P A R T S

Component Dimensions (Height × Width × Depth) (Unit: mm)

Weight

(Unit: kg) Remarks

Unified cabinet for

2000 × 600 × 300 59 Weight of an empty cabinet

Overview

Dimensions and Weights of

Structural Parts




Weight

(Unit: kg) Remarks

2200× 600 × 300 65 Weight of an empty cabinet

ZTE transmission equipment

2600 × 600 × 300 77 Weight of an empty cabinet

ZXMP S325 subrack

221.45 × 482.6 × 270 9 Weight of an empty subrack

Motherboard (MB)

214.6 × 438.4 × 4.5 1.500 -

3U power distribution box (PDB)

132.5 × 482.6 × 269.5 7 Includes electronic components

Dustproof unit 13.1 × 279.6 × 253 - Its weight is included in subrack.

Fan box PCB: 90 × 79 × 1.6

21.5 × 139.6 × 244.8 0.520

Includes structural parts and circuits

NCP board PCB: 160 × 2× 210

Front panel: 181.5 (Height) × 25.4 (Width)

0.430 -

SAI board PCB: 160 × 2 × 80

Front panel: None 0.160

-

PWRA board PCB: 2 × 72 × 170

Front panel: 25 (Height) × 74 (Width)

0.160 -

OCS16 board PCB: 160 × 2 × 210


0.460 -

OCS4 board PCB: 160 × 2 × 210


0.550 -

OL16x1 board PCB: 160 × 2 × 210


0.410 -

0.425 OL1/4x4(1x STM-1/4)

0.445 OL1/4x4(2x STM-1/4)

0.465 OL1/4x4(3x STM-1/4)

OL1/4x4 board

PCB: 160 × 2 × 210


0.485 OL1/4x4(4x STM-1/4)

Chapter 2 - Equipment Composition



Weight

(Unit: kg) Remarks

LP1x1 board PCB: 160 × 2 × 210


0.355 -

LP1x2 board PCB: 160 × 2 × 210


0.375 -

LP4x1 board PCB: 160 × 2 × 210

Front panel:181.5 (Height) × 25.4 (Width)

0.360 -

LP4x2 board PCB: 160 × 2 × 210

Front panel:181.5 (Height) × 25.4 (Width)

0.380 -

OIS1x1 board PCB: 160 × 2 × 80


-



-



-



-



-

OA board PCB: 160 × 2 × 210


0.490 -

BIS1 board PCB: 160 × 2 × 80


-

ESS1x2 board PCB: 160 × 2 × 80


-

EPE1x21 (75) board

PCB: 160 × 2 × 210


0.420 -

EPE1x21 (120) board

PCB: 160 × 2 × 210


0.420 -

EPT1x21 board

PCB: 160 × 2 × 210


0.400 -

EPE1B board PCB: 160 × 2 × 210


0.420 -




Weight

(Unit: kg) Remarks

BIE1x21 board

PCB: 160 × 2 × 210


0.090 -

ESE1x21 (75) board

PCB: 160 × 2 × 80


-

ESE1x21 (120) board

PCB: 160 × 2 × 80


-

EP3x3 board PCB: 160 × 2 × 210


0.400 -

BIE3x3 board PCB: 160× 2 × 80


-

ESE3x3 board PCB: 160 × 2 × 80


-

SFEx6 board PCB: 160 × 2 × 210


0.430 -

EIFEx4 board PCB: 160 × 2 × 80


-

BIFE board PCB: 160 × 2 × 80


-

AP1x4 board PCB: 160 × 2 × 210


0.430 -

RSEB board PCB: 160 × 2 × 210


0.735 -

Note:

The weights of OCS4, OCS16, optical line boards, optical interface boards, and OA board include the weights of SFP optical modules.



Subrack Following points state subrack details:

Comprises side panels, beams and metal guide rails, with heat dissipation and electromagnetic shielding functions.

User can fix subrack in the cabinet from the front without obstructing cable layout.

The installation mode can meet the requirements of maintenance from the equipment front, cabinet installation against wall, and back-to-back installation.

Figure 5 illustrates the subrack structure.

F I G U R E 5 . S U B R AC K S T R U C T U R E

1. Top cabling area 2. Service/functional interface board area 3. Small door 4. Power cable outlet 5. Power supply board area 6. Dustproof unit 7. Bottom cabling area 8. Service/functional board area 9. Cable outlet 10. Grounding post 11. Mounting lug 12. Captive fastener 13. Fan unit

Table 8 briefly describes different subrack parts.

T AB L E 8 . B R I E F D E S C R I P T I O N S O F D I F F E R E N T S U B R AC K P AR T S

S.N. Name Position in the Subrack Brief Description

1 Top cabling area

On top of the subrack interface board area

For leading out service cables and fiber pigtails of the interface board area. It can be opened upward.

Overview

Subrack Structure

Subrack Parts



S.N. Name Position in the Subrack Brief Description

2

Service/functional interface board area

In the upper left part of the subrack

The system interface board (SAI) and the service interface boards are inserted in this area. This area has one slot for the system interface board, and six slots for service interface boards. The board slots are arranged as in Figure 10.

3 Small door On the left side of the subrack

For the purposes of decoration, ventilation, and shielding. It is detachable.

4 Power cable outlet

At the bottom of the subrack left panel.

For leading out the power cable.

5 Power supply board area

In the bottom left part of the subrack

To insert the power supply board

6 Dustproof unit

At the bottom of the service/ functional board area

Keep the subrack inside clean, thus ensuring heat dissipation performance

7 Bottom cabling area

At the bottom of the subrack and above the dustproof unit

For laying service cables and fiber pigtails of the service/functional board area

8 Service/Functional board area

At the right side of the subrack

To insert the functional/service boards. It has 11 slots, with a 25.4 mm gap between neighboring slots. The board slots are arranged as in Figure 10.

9 Cable outletAt the bottom of the subrack right panel

For leading out service cables and fiber pigtails of the service/functional board area.

10 Grounding post

At the bottom of the subrack right panel

For connecting the subrack protection ground cable.

11 Mounting lug

At the back of the subrack (one each on the left and the right)

For fixing a subrack in the cabinet

12 Captive fastener

On the mounting lug For fixing a subrack in the cabinet

13 Fan unit On top of the subrack right side

It provides forced air cooling for the equipment to dissipate heat. The fan unit has two independent fan boxes, each of which is connected to the fan motherboard (FMB) for the convenience of maintenance.



Fan Unit Fan unit is the heat dissipation and cooling component of

ZXMP S325.

Each subrack is configured with a fan unit which can accommodate two independent fan boxes.

Each fan box has electrical connection to the fan motherboard (FMB) through the socket at the box rear side.

Fan box has independent locking function, with running and alarm indicators on its front panel.

The structure of fan box is shown in Figure 6.

F I G U R E 6 . S T R U C T U R E O F FAN B O X

1. Fan box 2. Running indicator 3. Alarm indicator

Overview

Structure



Dustproof Unit The ZXMP S325 adopts a brand-new dustproof design to

abandon the separate dustproof plug-in box.

The dustproof unit is installed on the bottom right side of the subrack. It serves to filter the air and to prevent dusts from entering the subrack, to ensure its electrical performance.

The pull-push operation mode makes periodic cleaning convenient.

Cleaning label appears on the front panel in addition.

Figure 7 illustrates the dustproof unit structure.

F I G U R E 7 . S T R U C T U R E O F D U S T P R O O F UN I T

1. Air filter 2. Front panel 3. Cleaning label

Overview

Structure



Power Distribution Box Power distribution box is installed in the upper part of ZXMP

S325 cabinet. It receives active/standby power supply external input.

Power distribution box can allocate at most six pairs of active/standby power supplies after filtering and lightning protection.

A standard power distribution box can allocate four pairs of active/standby power supplies to the four subracks of ZXMP S325 cabinet.

The power distribution box dimensions are 132.5 mm (Height) × 482.6 mm (Width) × 269.5 mm (Depth). An empty power distribution box weighs 3.7 kg.

Figure 8 illustrates the power distribution box structure.

F I G U R E 8 . S T R U C T U R E O F P O W E R D I S T R I B U T I O N B O X

1. Mounting lug 2. Captive fastener 3. Subrack active power supply area 4. Connection terminal of external power input (active) 5. Alarm indicator board (LED) 6. Connection terminal of external power input (standby) 7. Subrack standby power supply area 8. Front panel 9. Lightning arrester 10. Grounding terminal

A power distribution box provides two groups of connection terminals to access -48 V external power supply directly.

Each group comprises three connection terminals: -48 V, -48 V GND, and PGND.

Overview

Structure

Connection Terminals of

External Power Input



The left group is for the active power input and the right group is for the standby power input by default.

A power distribution box can provide at most six pairs of active/standby power supplies.

With standard configuration, a power distribution box provides four pairs of active/standby power supplies.

Each power supply includes a -48 V, a -48 V GND, and a PGND power supply, which are controlled by an air switch.

Each pair of active/standby power supply provides 1+1 power supply protection for a subrack in a cabinet.

The alarm indicator board (LED) displays the equipment cabinet alarms, which is synchronous with alarm indicators on the alarm indicator board of the equipment cabinet.

There are green, yellow, and red indicators, which respectively indicate normal power supply, minor alarms, and critical/major alarms of the equipment.

There are six DB9 (female) sockets on the LED board which drive alarm indicator or alarm ring, as shown in Figure 9.

These sockets can be connected with six subracks at the same time.

Table 9 lists the pin numbers and signal definitions of a DB9 socket.

F I G U R E 9 . P I N S O F DB9 (FE M AL E ) S O C K E T

15

9 6

T AB L E 9 . S I G N AL D E F I N I T I O N S O F DB9 (FE M AL E ) S O C K E T

Pin No. Signal Definition

1 RING: Alarm ring signal

2 RED: Critical or major alarm signal

3 YELLOW: Minor alarm signal

4 GREEN (-48 V): -48 V power indicator (green light)

6/7 GND: Working ground

8 -48 VGND: -48 V ground

Power Supply Areas

Alarm Indicator

Board (LED)



The front panel is fixed with captive fasteners at the power distribution box front side.

The space for air switches of subrack active/standby power supplies are reserved on both the left side and the right side, with power supply ID and sequence number marked out.

The space for alarm indicators are reserved in the middle of front panel.

By default, the six air switches marked as -48V_IN1 SW1~SW6 indicate active power supplies and those marked as -48V_IN2 SW1~SW6 indicate standby power supplies.

Notes:

With standard configuration, -48V_IN1 SW1~SW4 and -48V_IN2 SW1~SW4 are available.

With full configuration, -48V_IN1 SW1~SW6 and -48V_IN2 SW1~SW6 are available.

The bottom left corner of front panel has an alarm label indicating that non-professional is forbidden to operate the power distribution box.

The bottom right corner of front panel has an alarm label reminding operator to be careful about electricity.

A power distribution box rear part is equipped with one left mounting lug and one right mounting lug with captive fasteners.

They are used to fix the power distribution box in the equipment cabinet.

A power distribution box provides one left lightning arrestor and one right lightning arrestor to protect the power distribution box from lightning.

Power distribution box is installed on the top in the ZXMP S325 cabinet.

Front Panel

Mounting Lug

Lightning Arrestor

Position in Cabinet





C h a p t e r 3

Boards

Overview This chapter describes boards based on units and subsystems, since the boards of ZXMP S325 are designed according to units and subsystems. Each unit or subsystem performs a certain function.

The positions and connection relations of all the boards in a unit or subsystem are described in the unit/subsystem overview.

The functions, functional blocks, front panel, interfaces, and indicators of a board are described in the section of this board.

Subsystem Overview

The boards of ZXMP S325 are designed based on units and subsystems. Each unit or subsystem performs a certain function. Table 10 illustrates the units and subsystems of ZXMP S325.

T AB L E 10 . U N I T S AN D S U B S Y S T E M S O F ZXMP S325

Subsystem/Unit ID

Full Name Boards Involved

NCPU NE control processor unit

NCP, SAI

- Optical line, cross-connect, and clock unit

OCS4, OCS16, SAI

EP1 E1/T1 electrical tributary subsystem

EPE1x21, EPT1x21, EPE1B, ESE1x21, BIE1x21

EP3 E3/T3 electrical tributary subsystem

EP3x3, ESE3x3, BIE3x3



Subsystem/Unit ID

Full Name Boards Involved

OL1/4 STM-1/STM-4 optical line subsystem

LP1x1, LP1x2, LP4x1, LP4x2, OIS1x1, OIS1x2, OIS4x1, OIS4x2, ESS1x2, BIS1

EOS EOS subsystem SFEx6, EIFEx4, OIS1x4, BIFE

ATM ATM subsystem AP1x4, OIS1x4

RPR RPR subsystem RSEB, OIS1x4, EIFEx4

Board Overview

Table 11 lists all the ZXMP S325 boards.

T AB L E 11 . ZXMP S325 B O AR D S

Board ID Board/Unit Name Remarks

MB Motherboard -

SAI System auxiliary interface board

-

NCP NE control processor Has orderwire function. Applicable to ZXMP S330.

PWR Power supply board -

OCS4

STM-1/4 optical line, cross-connect, and synchronous-clock board

-

OCS16

STM-16 optical line, cross-connect, and synchronous-clock board

-

LP1x1 1-channel STM-1 line processor




Applicable to ZXMP S330.

OL1/4x4 4-channel STM-1/STM-4 optical line board

With different optical modules, it can work as STM-1 or STM-4 optical line board.


Chapter 3 - Boards



OL16x1 1-channel STM-16 optical line board


OIS1x1 1-channel STM-1 optical interface board






BIS1 STM-1 bridge interface board

Serves for STM-1 electrical interface protection. Applicable to ZXMP S330.

ESS1x2 2-channel STM-1 electrical interface switching board


EPE1x21 (75)

21-channel E1 electrical processor (75 Ω)

The interface impedance is 75 Ω.


EPE1x21 (120)

21-channel E1 electrical processor (120 Ω)



EPT1x21 (100)

21-channel T1 electrical processor (100 Ω)



EPE1B 21-channel E1/T1 electrical processor

Supports the framing mode. Applicable to ZXMP S330.

BIE1x21 21-channel E1/T1 bridge interface board

Serves for E1/T1 board protection. Inserted in the interface board slot corresponding to the E1/T1 protection board.


ESE1x21 (75)

21-channel E1 electrical interface switching board (75 Ω)

The interface impedance is 75 Ω. Applicable to ZXMP S330.

ESE1x21 (120)

21-channel E1/T1 electrical interface switching board (120 Ω/100 Ω)

The interface impedance is 120 Ω or 100 Ω. Applicable to ZXMP S330.

EP3x3 3-channel E3/T3 electrical processor





BIE3x3 3-channel E3/T3 electrical bridge interface board

Serves for E3/T3 board protection. Inserted in the interface board slot corresponding to the E3/T3 protection board.


ESE3x3 3-channel E3/T3 electrical interface switching board


SFEx6 Smart fast Ethernet board

There are two types of SFEx6 boards corresponding to different encapsulation modes: SFEx6 (PPP) board and SFEx6 (GFP) board.


EIFEx4 4-channel electrical interface board of fast Ethernet


BIFE Bridge interface board of fast Ethernet

Serves for SFEx6 board protection. Inserted in the interface board slot corresponding to the SFEx6 protection board.


AP1x4 ATM processor with 4 STM-1 ports


RSEB Ethernet processor with RPR function


OA Optical amplifier Applicable to ZXMP S330.

These boards fall into two categories:

Functional/service processor boards, including:

MB, OCS4, SAI, NCP, PWR, LP1x1, LP1x2, LP4x1, LP4x2, EPE1x21 (75), EPE1x21 (120), EPE1x21 (100), EPE1B, BIE1x21, ESE1x21 (75), ESE1x21 (120), EPE3x3, EPT3x3, EP3x3, SFEx6, AP1x4, OA, RSEB

Functional/service interface boards, including:

OIS1x1, OIS1x2, OIS1x4, OIS4x1, OIS4x2, BIS1, ESS1x2, BIE3x3, ESE3x3, EIFEx4, BIFE

Categories

Chapter 3 - Boards


Board Slots

The board slots of ZXMP S325 subrack are arranged as in Figure 10.

F I G U R E 10 . BO AR D S L O T S O F ZXMP S325 S U B R AC K

In Figure 10, the slots numbered from 1 to 8 and 11, 12, 17 are for service/functional boards; and the slots numbered from L1 to L6 are for interface boards.

The subrack board area is divided into four sub-areas:

Service/functional interface board area: locates in the upper left part of subrack

Power supply board area: locates in the bottom left part of subrack

Fan unit area: locates in the upper right area of subrack

Service/functional board area: locates in the bottom right part of subrack

Description



Board Structure Functional/Service Interface Board

The functional/service interface boards fall into two categories:

Electrical interface/switching boards, including:

BIS1, ESS1x2, BIE3x3, ESE3x3, EIFEx4, BIFE

Optical interface boards, including:

OIS1x1, OIS1x2, OIS1x4, OIS4x1, OIS4x2

A functional/service interface board has no front panel, but has levers with self-lock function. It is inserted in a left-side slot of subrack.

Its PCB dimensions are: 160 mm (Height) ×2 mm (Width) × 80 mm (Depth).

Figure 11 (a) illustrates the structure of a typical electrical interface/switching board, and Figure 11 (b) illustrates the structure of a typical optical interface board.

F I G U R E 11 . ST R U C T U R E S O F E L E C T R I C AL I N T E R F AC E /S W I T C H I N G B O AR D AN D OP T I C AL I N T E R F AC E B O AR D

(a) Electrical interface/switching board (b) Optical interface board

1. Board label 2. Upper lever 3. Board PCB 4. Electrical or optical interface 5. Lower lever

Categories

Description

Structure

Chapter 3 - Boards


Notes:

The structures of all the electrical interface/switching boards are similar.

The structures of all optical interface boards are similar.

Functional/Service Board

Functional/service board has a front panel. Its levers have the functions of shielding and self-lock. It is inserted in a right-side slot of subrack.

The front panel dimensions are: 181.5 mm (Height) × 25.4 mm (Width).

The PCB dimensions are: 160 mm (Height) × 2 mm (Width) × 210 mm (Depth).

The structures of various functional/service boards are similar.

Figure 12 takes the OCS4 board as an example and illustrates the structure of a typical functional/service board.

F I G U R E 12 . OCS4 B O AR D S T R U C T U R E

1. Lever 2. Front panel 3. Interface 4. Board PCB

Description

Structure



Motherboard ZXMP S325 motherboard (MB) is fixed at the subrack rear

part. It is the carrier for various boards. There are service bus, overhead bus, clock bus, and board-in-position bus on the motherboard.

Motherboard communicates with boards, other equipment, and the external via the sockets.

There are tin bands serving as ground cables at the position where the motherboard front/rear side contacts the subrack, to ensure reliable electrical connection between the subrack and motherboard.

Figure 13 illustrates the structure of motherboard.

F I G U R E 13 . MO T H E R B O AR D S T R U C T U R E D I AG R AM

1. Functional/service interface board area 2. Power supply board area 3. Functional/service board area 4. Fan unit area

Motherboard can be divided into four areas:

The upper left area: connects with the functional/service interface boards.

The lower left area: connects with the power supply board.

The upper right area: connects with the fan unit.

The lower right area: connects with the functional/service board.

Description

Structure

Chapter 3 - Boards


NCP Unit Overview

NCP unit is the network element control unit.

It comprises an NCP board and an SAI board.

Figure 14 illustrates NCP and SAI boards positions in a subrack.

F I G U R E 14 . NCP AN D S AI B O AR D S P O S I T I O N S I N A S U B R AC K

Cable outlet area

PWR PWR 12 177 865432 111

Fan unitFan unit

L6L5L4L3L2L1SAI

NCP

SAI

NCP Board

Sends the configuration commands to other boards and collects their performance data and alarms.

Exchanges EMS information between NEs through ECC channel.

Reports to the SMCC the alarms and performance messages of this NE and the subnet to which the NE belongs, and receives the commands and configurations sent by the SMCC to the NE and to the subnet to which the NE belongs through the Qx interface.

Detects the fan running status, and reports alarm once the fan stops running. Shuts down or starts the fan according to the EMS command.

Provides a four-digit DIP switch to set the software state:

NCP software state may be "Download" or "Running".

Description

Position in Subrack

Functions



The Download state: Set the DIP switch to all ON, then NCP board will enter the Download state. It is used to download applications and NCP parameter configuration.

The Running state: Set the DIP switch to not all ON and not all OFF, then NCP board will enter the Running state. It is used to start the NCP board application and makes the NCP board to enter the normal running state.

Following points explain about OW functions of NCP board:

Implements orderwire interworking between NEs via the E1 and E2 bytes.

Provides two voice channels that are independent with each other. The system can support up to 16 orderwire directions.

Achieves calls based on point-to-point, point-to-multipoint, point-to-group, and point-to-the entire line.

Dual tone signaling is adopted for point-to-point calls.

The contact signaling acts as the man-machine interface through the keys on the telephone set, which must be a dual-tone type.

Represents the received dialing and E1/E2 DTMF signaling, decides the channel status according to the signaling, and controls the phone connection.

Following five phone connection states are available:

i. Phone connected to E1 channel

ii. Phone connected to E2 channel

iii. Phone connected to "dial tone & busy tone generating circuit"

iv Phone connected to the ring current signal

v. Free (off-hook and without being called)

Sets orderwire numbers via the EMS

Prevents the orderwire from being looped through EMS settings

The orderwire software can be downloaded online by the EMS

Figure 15 shows the NCP board functional blocks. Functional Blocks

Chapter 3 - Boards


F I G U R E 15 . FU N C T I O N AL B L O C K D I AG R A M O F NCP B O A R D

Control unit

Real-time clock

Qx interface

ECC interface

Board-in-position detection

Board reset control

NE alarm output

External alarm input

Monitoring on fan and power distribution box

Subrack alarm concatenation

Table 12 describes the functional blocks.

T AB L E 12 . D E S C R I P T I O N O F NCP B O AR D F U N C T I O N AL B L O C K S

Functional Block

Function

Real-time clock

It serves to confirm the exact time of alarm generation and disappearance during NE monitoring.

To ensure the accurate timing after power-off, the standby chargeable battery will supply power instead when a power failure is detected.

QX interface

Qx interface is a communication interface between the NE and the Subnet Management Control Center (SMCC).

With the Qx interface, NCP can report to SMCC the alarm and performance information of the current NE and of the subnet, and can receive the commands and configurations sent from SMCC to the NE and the subnet.

ECC interface

The NCP board provides the ECC bus for each line board. The EMS manages the whole subnet via the interconnection between the ECC of the access NE’s NCP and that of the other NEs’ NCPs in the subnet.

Control unit Configures and starts the board software

Board-in-position detection

Detects the board in-position information



Functional Block

Function

External alarm input, NE alarm output

Monitors external alarms and outputs alarms in the NE

Board reset control

Conducts hard reset of all the boards in the NE

Subrack alarm concatenation

Implements concatenation of alarms from multiple ZXMP S325 subracks

Monitoring on fan and power distribution box

Detects the fan running status, and reports alarm once the fan stops running. Shuts down or starts the fan according to the EMS command.

Detects the over/under-voltage of the subrack power.

Figure 16 shows the NCP board front panel.

F I G U R E 16 . NCP B O AR D FR O N T P AN E L

1. Indicators (RUN, OW, and ALM) 2. f Interface 3. Qx interface 4. Orderwire interface (OW) 5. Ring trip button (BELL-OFF) 6. Reset button (RESET) 7. Antistatic wrist strap socket (ESD GROUND)

Front Panel

Chapter 3 - Boards


Table 13 describes the indicators on the NCP board front panel.

T AB L E 13 . I N D I C AT O R S O N NCP B O AR D F R O N T P AN E L

Indicator Name

Description

RUN Indicator of NCP board working status (green). It flashes periodically when the NCP board is working normally.

OW

Orderwire ringing indicator (red/green).

If the NCP board is working normally, the green indicator flashes periodically. When there is an incoming orderwire call, the red indicator is on.

ALM Alarm indicator (red). It is on when the NCP board detects an alarm. Otherwise, it is off.

Table 14 describes the interfaces and buttons on the NCP board front panel.

T AB L E 14 . I N T E R F AC E S AN D B U T T O N S O N NCP B O AR D F R O N T P AN E L

Name Description

f interface Interface between an NE and portable equipment. Adopts the RJ45 socket

QX interface Communication interface between SMCC and the NE. Adopts the RJ45 socket.

Orderwire interface (OW)

Orderwire interface. Adopts the RJ11 socket

Ring trip button (BELL-OFF)

Controls whether to give a ring alarm

Reset button (RESET) Press down this button to reset the NCP board

Antistatic wrist strap socket (ESD GROUND)

Connects the antistatic wrist strap

Refer to the Overview section of NCP unit.

Indicators

Interfaces and Buttons

Position in Subrack



SAI Board

The SAI board communicates with the NCP board and OCS4 board through the motherboard. It provides interfaces for the NCP board and the OCS4 board to connect with the equipment outside.

It provides the NCP board with alarm input and output interfaces, an alarm concatenation interface, and an F1 interface.

It provides the OCS4 board with external clock input and output interfaces.

Figure 17 shows the functional blocks of SAI board.

F I G U R E 17 . FU N C T I O N AL B L O C K D I AG R A M O F SAI B O A R D

NCP interface unit

Clock interface unit

Moth

erboard

NCPboard

OCS4board

Powersupply unit


T AB L E 15 . D E S C R I P T I O N O F S AI B O AR D FU N C T I O N AL B L O C K S

Functional Block

Function Description

NCP interface unit

Provides an alarm input interface to import four channels of external Boolean alarm signals. These signals are processed and transferred into four channels of external alarm signals, and then sent to the NCP board by the motherboard.

Provides an interface to connect with the cabinet alarm indicator board. This interface outputs the alarm signal detected by the NCP board to the cabinet alarm indicator board.

Processes the alarm indication signal sent by the NCP board, and then sends Boolean signals to the column head cabinet or to other subrack for concatenation.

Functions as an F1-byte analog line interface with the functions including pulse reshape, LOS alarm detection.

Functions

Functional Blocks

Chapter 3 - Boards


Functional Block

Function Description

Clock interface unit

Provides two interfaces to input the 2.048 Mbit/s or 2.048 MHz external clock signal, and two interfaces to output the 2.048 Mbit/s or 2.048 MHz clock signal. Extract the clock and synchronization information.

The DIP switch “S2” on the PCB of SAI board determines whether to input 2.048 Mbit/s or 2.048 MHz clock. If the fourth digit of S2 is set to “ON”, the SAI board inputs/outputs 2.048 MHz clock signal; Otherwise, it inputs/outputs 2.048 Mbit/s clock signal.

Power supply unit

Filters and allocates the power required by the SAI board.

None

None

Figure 18 shows the interfaces of SAI board.

F I G U R E 18 . SAI B O AR D I N T E R F AC E S

1. IN1 2. OUT1 3. IN2 4. OUT2 5. F1 6. Lever 7. ALM-I 8. ALM-C 9. ALM-O 10. LED

Front Panel

Indicators

Interfaces



Table 16 describes the SAI board interfaces.

T AB L E 16 . D E S C R I P T I O N S O F SAI B O AR D I N T E R F AC E S

Interface Name Description

IN1 The first channel to input 2 Mbit/s or 2MHz external clock signal

OUT1 The first channel to output 2 Mbit/s or 2MHz clock signal to the outside

IN2 The second channel to input 2 Mbit/s or 2MHz external clock signal

OUT2 The second channel to output 2 Mbit/s or 2MHz clock signal to the outside

F1 interface

Connects with 64 K co-directional interface device. Uses the RJ45 socket.

Lever For plugging/unplugging the SAI board

ALM-I Serves as the input interface of external alarms (smog, water, entrance control, fire, temperature, etc.). Uses the RJ45 socket.

ALM-C

Input interface for subrack alarm concatenation. It connects with the ALM-O interfaces on other subracks to implement the subrack alarm concatenation. Uses the RJ45 socket.

ALM-O

Output interface for subrack alarm concatenation. It outputs the alarm signals (minor alarms, critical or major alarms, and audio alarms) to the column head cabinet or to the ALM-C interface of other subrack. Uses the RJ45 socket.

LED Interface for alarm indicator board. Connects with the alarm indicator board of the power distribution box. Uses the RJ45 socket.

Refer to the Overview section of NCP unit.

Position in Subrack

Chapter 3 - Boards


Optical Line, Cross-connect, and Clock Unit Overview

The optical line, cross-connect, and clock unit implements system timing, cross-connect, and optical line processing.

It comprises OCS4 or OCS16 board, and SAI board.

Figure 19 illustrates the position of this unit in subrack

F I G U R E 19 . PO S I T I O N O F CR O S S -C O N N E C T AN D C L O C K U N I T

Cable outlet area

PWR PWR 12 177 865432 111

Fan unitFan unit

L6L5L4L3L2L1SAI

NCP

SAI

OCS4/

16

OCS4/

16

OCS16 Board

OCS16 board is the core board of ZXMP S325 equipment working at the STM-16 rate. It processes the STM-16 optical line, cross-connects the higher/lower-order paths, and allocates the clock.

Description

Position in Subrack

Functions



The following points describe OCS4 board functions in detail.

Functions as a clock board

It enables the equipment clock performance to satisfy the clock characteristics specified in the ITU-T G.813 Recommendation.

The system clock supports various work modes including the internal clock, line (or tributary) clock, and external clock.

The system can be configured with ten channels of line (or tributary) clock sources and two channels of external clock sources simultaneously.

The system can perform protection switching among the clock sources according to the alarm and synchronization status information of the clock sources.

It provides the boards in various slots with system clock signal, system frame head signal, and system clock enabling signal.

Employs the software-controlled phase-locking circuit to achieve four work modes as follows:

i. Fast capture mode

ii. Tracing mode

iii. Hold mode

iv. Free-oscillation mode

Implements network-wide clock synchronization via the SSM byte.

Provides the clock for tributary board retiming.

Two OCS16 boards can work in 1+1 hot backup mode in order to ensure the synchronization and timing reliability of clock unit. The standby clock unit traces the frequency and phase of the active clock unit, so that the frequency and phase of the output clock will have no jump when the EMS switches between the active and standby clock unit.

One OCS16 board can also work alone.

Can input two channels of external clock reference and output two channels of clock reference to the outside. The interfaces of these clock references are provided by the SAI board.

Functions as a cross-connect board

The OCS16 board can cross-connect 92 AU-4s at the higher-order path, and 32 AU-4s at the lower-order path.

When ZXMP S325 is equipped with OCS16 board, the capacity distribution of motherboard is shown in Figure 23.

Chapter 3 - Boards


F I G U R E 20 . CAP AC I T Y D I S T R I B U T I O N O F M O T H E R B O AR D E Q U I P P E D W I T H OCS16 B O AR D

Notes:

The numbers with no parenthesis represent for capacity, in unit of AU-4.

The numbers with parenthesis represent for slot numbers.

Other functions of the OCS16 board include:

Implements the protection for higher/lower-order path at STM-16 rate level.

Processes one channel of STM-16 optical signal; provides one optical receive interface and one optical transmit interface which employ the SFP optical module and the LC/PC connector.

Forwards the ECC data.

Monitors the status of each service board. Implements 1:N protection of tributary boards.

Implements the 1+1 backup protection for the clock unit and the cross-connect unit.

Supports the HP-TCM (Higher-order Path Tandem Connection Monitoring) function.

Figure 24 shows the functional blocks of OCS16 board. Functional Blocks



F I G U R E 21 . FU N C T I O N AL B L O C K D I AG R A M O F OCS16 B O AR D

Clock unit

Cross-connect and path switching unit

STM-16 optical interface unit

1:N tributary protection unit

ECC routing unit

Power supply unit

1+1 backup protection unit

CPU unit

Timing reference

Working clock and frame head of each

slot

Service bus of each slot

Switching control bus

ECC bus


T AB L E 17 . D E S C R I P T I O N O F OCS16 B O AR D FU N C T I O N AL B L O C K S

Functional Block Functions

Clock unit

Provides the system clock signal and the system frame head signal for each slot in ZXMP S325 subrack.

Processes two channels of external 2.048 MHz or 2.048 Mbit/s clock references, and set the timing input reference for line or tributary.

Selects the timing reference of NE from the valid input timing sources, and allocates the timing reference to various units in the NE.

Performs protection switching among the clock sources according to alarm and synchronization information of the clock sources.

Implements network-wide clock synchronization.


CPU unit

Implements the system data configuration, clock phase-lock, and remote upgrade of OCS16 board’s application and logic.

Sends command to forward the ECC.

Chapter 3 - Boards



STM-16 optical interface unit

Provides the functions of STM-16 optical interface

Implements the conversion between optical and electrical signals

Separates the data and overhead, and transparently transmits the overhead

Forwards the ECC according to the command sent by the CPU unit and the route found by the ECC routing unit.


Cross-connects 92 AU-4s at the higher-order path, and 32 AU-4s at the lower-order path.

Implements the path protection

1:N tributary protection unit Implements the 1:N protection for tributary boards.

ECC routing unit Finds route to forward the ECC.


Controls the 1+1 backup protection for all the units except the “STM-16 optical interface unit” of OCS16 board.

Power supply unit Filters and allocates the power required by the OCS16 board.

Figure 25 illustrates the OCS16 board front panel.

F I G U R E 22 . OCS16 B O AR D FR O N T P AN E L

1. Running status indicator (RUN) 2. Clock status indicator (M/S) 3. Alarm indicator (ALM) 4. Receive and transmit optical interfaces 5. Laser warning sign

Front Panel



Table 20 describes the indicators on OCS16 board front panel.

T AB L E 18 . I N D I C AT O R S O N OCS16 B O AR D FR O N T P AN E L

Indicator Name

Description

RUN Indicator of board working status (green). It flashes periodically and slowly when the board is working normally.

M/S

Indicator of clock status (green). Its states are:

Flashes in the frequency of 5 Hz if the clock works in the fast capture mode

Flashes in the frequency of 1 Hz if the clock works in the tracing mode

Flashes in the frequency of 0.5 Hz if the clock works in the free-oscillation mode

It is on if the clock works in the hold mode

It is off if the board is in standby mode

ALM Alarm indicator (red). It is on when the board detects an alarm. Otherwise, it is off.

RX: the optical receive interface.

TX: the optical transmit interface.

Note: The connector type of these interfaces is LC/PC.

Laser warning sign: Warns the operator not to look straight at the optical interface when plugging/unplugging the fiber pigtail lest the eyes would be burnt.

Refer to the Overview section of the optical line, cross-connect, and clock Unit.

The optical line, clock, and cross-connect functions of OCS16 board are managed by different modules in the EMS. Refer to the ZXONM E300 manuals for operation details.

Refer to the section of SAI Board in Chapter 3 for its functions, functional blocks, and interfaces.

Indicators

Interfaces and Sign

Position in Subrack

Related Information

Chapter 3 - Boards


OCS4 Board

OCS4 board is the core board of ZXMP S325 equipment working at the STM-1/STM-4 rate. It processes the STM-1/STM-4 optical line, cross-connects the higher/lower-order paths, and allocates the clock.

Note: Whether the rate of OCS4 board is STM-1 or STM-4 is determined by the optical module installed in the OCS4 board.

The following points describe OCS4 board functions in detail.

Functions as a clock board

It enables the equipment clock performance to satisfy the clock characteristics specified in the ITU-T G.813 Recommendation.

The system clock supports various work modes including the internal clock, line (or tributary) clock, and external clock.

The system can be configured with eight channels of line (or tributary) clock sources and two channels of external clock sources simultaneously.

The system can perform protection switching among the clock sources according to the alarm and synchronization status information of the clock sources.

It provides the boards in various slots with system clock signal, system frame head signal, and system clock enabling signal.

Employs the software-controlled phase-locking circuit to achieve four work modes as follows:

i. Fast capture mode

ii. Tracing mode

iii. Hold mode

iv. Free-oscillation mode

Implements network-wide clock synchronization via the SSM byte.


Two OCS4 boards can work in 1+1 hot backup mode in order to ensure the synchronization and timing reliability of clock unit. The standby clock unit traces the frequency and phase of the active clock unit, so that the frequency and phase of the output clock will have no jump when the EMS switches between the active and standby clock unit.

One OCS4 board can also work alone.

Functions



Can input two channels of external clock reference and output two channels of clock reference to the outside. The interfaces of these clock references are provided by the SAI board.

Functions as a cross-connect board

The OCS4 board can cross-connect 32 AU-4s at both the higher-order path and the lower-order path.

When an OCS4 board is equipped with a STM-4 optical module, the capacity distribution of motherboard is shown in Figure 23.

F I G U R E 23 . CAP AC I T Y D I S T R I B U T I O N O F M O T H E R B O AR D E Q U I P P E D W I T H STM-4 OCS4 B O AR D

NCP

(2)(1)

Fan unitFan unit

(3) (4) (5) (6) (7) (8) (11) (12) (17)

2 2 2 2 4 4 4 4 4 4

Notes:

The numbers with no parenthesis represent for capacity, in unit of AU-4.

The numbers with parenthesis represent for slot numbers.

Other functions of the OCS4 board include:

Implements the protection for higher/lower-order path at STM-1 or STM-4 rate level.

Can process one channel of STM-1 or STM-4 optical line; provides one optical receive interface and one optical transmit interface which employ the SFP optical module and the LC/PC connector.

Forwards the ECC data.

Implements the 1+1 backup protection for the clock unit and the cross-connect unit.

Supports the HP-TCM (Higher-order Path Tandem Connection Monitoring) function.

Chapter 3 - Boards


Figure 24 shows the functional blocks of OCS4 board.

F I G U R E 24 . FU N C T I O N AL B L O C K D I AG R A M O F OCS4 BO AR D

Clock unit

Cross-connect and pathswitching unit

STM-1/STM-4 opticalinterface unit

1:N tributary protectionunit

ECC routing unit

Power supply unit

1+1 backupprotection unit

CPU unit

Timing reference

Working clock andframe head of

each slot

Service busof each slot

Switchingcontrol bus

ECC bus


T AB L E 19 . D E S C R I P T I O N O F OCS4 B O AR D FU N C T I O N AL B L O C K S


Clock unit

Provides the system clock signal and the system frame head signal for each slot in ZXMP S325 subrack.

Processes two channels of external 2.048 MHz or 2.048 Mbit/s clock references, and set the timing input reference for line or tributary.

Selects the timing reference of NE from the valid input timing sources, and allocates the timing reference to various units in the NE.

Performs protection switching among the clock sources according to alarm and synchronization information of the clock sources.

Implements network-wide clock synchronization.


CPU unit

Implements the system data configuration, the clock phase-lock, the remote upgrade of OCS4 board’s application and logic.

Sends command to forward the ECC.

Functional Blocks




STM-1/STM-4 optical interface unit

Provides the functions of STM-1 or STM-4 optical interface

Implements the conversion between optical and electrical signals

Separates the data and overhead, and transparently transmits the overhead

Forwards the ECC according to the command sent by the CPU unit and the route found by the ECC routing unit.


Cross-connects 32 AU-4s at both the higher-order path and the lower-order path.

Implements the path protection

1:N tributary protection unit Implements the 1:N protection for tributary boards.

ECC routing unit Finds route to forward the ECC.


Controls the 1+1 backup protection for all the units except the “STM-1/STM-4 optical interface unit” in the OCS4 board.

Power supply unit Filters and allocates the power required by the OCS4 board.

Figure 25 illustrates the OCS4 board front panel.

F I G U R E 25 . OCS4 B O AR D F R O N T P AN E L

1. Running status indicator (RUN) 2. Clock status indicator (M/S) 3. Alarm indicator (ALM) 4. Receive and transmit optical interfaces 5. Laser warning sign

Front Panel

Chapter 3 - Boards


Table 20 describes the indicators on OCS4 board front panel.

T AB L E 20 . I N D I C AT O R S O N OCS4 B O AR D FR O N T P AN E L

Indicator Name

Description

RUN Indicator of board working status (green). It flashes periodically and slowly when the board is working normally.

M/S

Indicator of clock status (green). Its states are:

Flashes in the frequency of 5 Hz if the clock works in the fast capture mode

Flashes in the frequency of 1 Hz if the clock works in the tracing mode

Flashes in the frequency of 0.5 Hz if the clock works in the free-oscillation mode

It is on if the clock works in the hold mode

It is off if the board is in standby mode

ALM Alarm indicator (red). It is on when the board detects an alarm. Otherwise, it is off.

RX: the optical receive interface.

TX: the optical transmit interface.

Note: The connector type of these interfaces is LC/PC.

Laser warning sign: Warns the operator not to look straight at the optical interface when plugging/unplugging the fiber pigtail lest the eyes would be burnt.

Refer to the Overview section of the optical line, cross-connect, and clock Unit.

The optical line, clock, and cross-connect functions of OCS4 board are managed by different modules in the EMS. Refer to the ZXONM E300 manuals for operation details.

Refer to the section of SAI Board in Chapter 3 for its functions, functional blocks, and interfaces.

Indicators

Interfaces and Sign

Position in Subrack

Related Information



OL16x1 Board OL16x1 board provides one pair of STM-16 standard optical

transmit/receive interfaces.

Terminates and regenerates the STM-16 regenerator section overhead and multiplex section overhead.

Interprets the AU-4 pointer and obtains the VC payload.

Forwards EMS information from optical line board to NCP board.

Outputs the received reference clock to OCS16 board.

Forwards ECC data.

Supports query of parameters of four optical modules: optical received power module, optical launched power module, temperature module, and laser working current module.

Supports color optical interface.

Supports online query of optical module type.

Supports HP-TCM (Higher-order Path Tandem Connection Monitoring) function. On the border of different carriers’ networks, it can detect the number of B3 block errors received by this network, as well as the number of B3 block errors sent from this network to next network.

The functional block diagram of OL16x1 board is shown in Figure 26. And Table 21 briefly describes the functional blocks.

F I G U R E 26 . FU N C T I O N AL B L O C K D I AG R A M O F OL16 X 1 B O AR D

T AB L E 21 . FU N C T I O N AL B L O C K S O F OL16 X 1 B O AR D

Functional Block

Function

Optical module The optical module unit consists of a 2.5 G optical

receive interface and a 2.5 G optical transmit interface. The 2.5 G optical receive interface converts 2.5 G high-

Functions

Functional Blocks

Chapter 3 - Boards


Functional Block

Function

speed optical signal into electrical signal. It can also monitor the optical received power.

The 2.5 G optical transmit interface converts electrical signal into 2.5 G high-speed optical signal. It can also shut down the laser; monitor the optical launched power and the laser working current.

Multiplexing /Demultiplexing unit

Extracts clock at the receive direction, multiplies frequency of clock at the transmit direction, demultiplexes data at the receive direction, and multiplexes data at the transmit direction.

Control unit

Provides interfaces and channels via which it can communicate with NCP board to perform such functions as performance statistics, alarm detection, temperature control, status setting, and inter-board communications.

Traffic processing unit

Separates payload from overhead, and combines payload with overhead.

Extracts and inserts section overhead (SOH). Processes pointers, alarms, and ECC forwarding;

implements bit error statistics.

Monitoring unit Performs various monitoring functions, such as temperature detection.

The front panel of OL16x1 board is illustrated in Figure 27.

F I G U R E 27 . FR O N T P AN E L O F OL16 X 1 BO AR D

1. Running status indicator (RUN) 2. Work indicator (M/S) 3. Alarm indicator (ALM) 4. Optical transmit interface and receive interface (TX, RX) 5. Laser warning sign 6. Laser level sign

Front Panel



There are three indicators on the front panel, which are in turn the RUN (green) indicator, the M/S (green) indicator, and the ALM (red) indicator from top to bottom.

The RUN indicator flickers slowly and regularly if the board is running normally.

The M/S indicator is ON if the board is running normally.

The ALM indicator is OFF if the board has no alarm; otherwise, it is ON.

OL16x1 board provides one optical receive interface (RX) and one optical transmit interface (TX). They receive or transmit STM-16 optical signals. Their connectors are both LC/PC type.

The laser warning sign warns the operator not to look straight at optical interface when plugging/unplugging fiber pigtail, lest eyes would be hurt.

The laser level sign marks the laser level.

OL16x1 board cannot work unless OCS16 board is installed. With OCS16 board installed, OL16x1 board can be inserted in slot 6, 11, and 12.

The grey part in Figure 28 illustrates the position of OL16x1 board in ZXMP S325 subrack.

F I G U R E 28 . PO S I T I O N O F OL16 X 1 B O AR D I N S U B R AC K

Cable outlet area

PWR PWR 12 177 865432 111

Fan unitFan unit

L6L5L4L3L2L1SAI

NCP

SAI

OCS4/

16

OCS4/

16

Indicators

Interfaces and Signs

Position in Subrack

Chapter 3 - Boards


OL1/4x4 Board OL1/4x4 board can process four channels of STM-1 or STM-4 optical signals. User can set the number of optical interfaces to be 1, 2, 3, or 4 as per the actual requirements. OL1/4x4 board supports the following three work modes:

OL1 mode: rates of all the optical interfaces are STM-1.

OL4 mode: rates of all the optical interfaces are STM-4.

OL1/4 mode: rates of optical interfaces can be STM-1 or STM-4.

OL1/4x4 board processes STM-1/4 optical signals. Its interface types are LC/PC. It supports the single-fiber bidirectional application.

Implements conversion between optical and electrical signals.

Forwards EMS information from optical line board to NCP board.

Outputs the received reference clock to OCS4 board.

Supports query of four optical module parameters: optical received power, optical launched power, module temperature, and laser working current.

Supports online query of optical module type.

Supports HP-TCM (Higher-order Path Tandem Connection Monitoring) function.

The functional block diagram of OL1/4x4 board is shown in Figure 29. And Table 22 briefly describes the functional blocks.

F I G U R E 29 . FU N C T I O N AL B L O C K D I AG R A M O F OL1/4 X 4 B O AR D

Multiplexing/Demultiplexing

unit622 M/155 M opticaltransmit interface

Monitoringunit NCP board

OCS4board

Serviceprocessing

unit

Controlunit

Opticalmodule

622 M/155 M opticalreceive interface

T AB L E 22 . FU N C T I O N AL B L O C K S O F OL1/4 X 4 B O AR D

Functional Block

Function

Optical module The optical module unit consists of a 622 M/155 M optical receive interface and a 622 M/155 M optical

Overview

Functions

Functional Blocks



Functional Block

Function

transmit interface. The 622 M/155 M optical receive interface converts 622

M/155 M high-speed optical signal into electrical signal. It can also monitor the optical received power.

The 622 M/155 M optical transmit interface converts electrical signal into 622 M/155 M high-speed optical signal. It can also shut down the laser; monitor the optical launched power and the laser working current.

Multiplexing /Demultiplexing unit

Extracts clock at the receive direction, multiplies frequency of clock at the transmit direction, demultiplexes data at the receive direction, and multiplexes data at the transmit direction.

Control unit

Provides interfaces and channels via which it can communicate with NCP board to perform such functions as performance statistics, alarm detection, temperature control, status setting, and inter-board communications.

Service processing unit

Separates payload from overhead, and combines payload with overhead.

Extracts and inserts section overhead (SOH). Processes pointers, alarms, and ECC forwarding;

implements bit error statistics.

Monitoring unit Performs various monitoring functions, such as temperature detection.

The front panel of OL1/4x4 board is illustrated in Figure 30.

F I G U R E 30 . FR O N T P AN E L O F OL1/4 X 4 B O AR D

1. Running status indicator (RUN) 2. Work indicator (M/S) 3. Alarm indicator (ALM)

Front Panel

Chapter 3 - Boards


4. Optical transmit interfaces and receive interfaces (TX, RX) 5. Laser warning sign 6. Laser level sign





OL1/4x4 board provides four optical receive interfaces (RXn, n=1, 2, 3, 4) and four optical transmit interfaces (TXn, n=1, 2, 3, 4). They receive or transmit STM-1 or STM-4 optical signals. Their connectors are all LC/PC type.



The grey part in Figure 31 illustrates the positions of OL1/4x4 board in ZXMP S325 subrack. Table 23 describes the slots of OL1/4x4 board.

F I G U R E 31 . PO S I T I O N S O F OL1/4 X 4 B O AR D I N ZXMP S325 S U B R AC K

Cable outlet area

PWR PWR 12 177 865432 111

Fan unitFan unit

L6L5L4L3L2L1SAI

NCP

SAI

OCS4/

16

OCS4/

16

T AB L E 23 . D E S C R I P T I O N S O F OL1/4 X 4 BO AR D P O S I T I O N S I N ZXMP S325 S U B R AC K

Slot No. Description

1, 2, 3, 4

OL1/4x4 board inserted in these slots can only work in OL1 mode. And the 3rd and 4th optical interface pairs can only work for regenerator, not for adding/dropping traffic.

5 OL1/4x4 board inserted in slot 5 can work in either OL1 mode or OL4 mode.

Indicators


Position in Subrack



Slot No. Description

When working in OL4 mode, the 2nd, 3rd and 4th optical interface pairs can only work for regenerator, not for adding/dropping traffic.

If OCS4 board is installed, OL1/4x4 board can work in either OL1 mode or OL4 mode.

When working in OL4 mode, the 2nd, 3rd and 4th optical interface pairs can only work for regenerator, not for adding/dropping traffic.

6, 11, 12

If OCS16 board is installed, OL1/4x4 board can work in OL1 mode, OL4 mode, or OL1/4 mode.

Note: If all the optical interfaces of OL1/4x4 board work for regenerator, the OL1/4x4 board can be inserted in any service board slot.

Chapter 3 - Boards


OL1/4 Subsystem Overview

Implements the functions of STM-1 electrical interface, and STM-1/STM-4 optical interface.

Implements conversion between optical and electrical signals.

Separates overhead from data

Provides 1:N (N≤5) protection for STM-1 electrical interface.

The OL1/4 subsystem comprises the following boards:

LP1x1, LP1x2, LP4x1, LP4x2, OIS1x1, OIS1x2, OIS4x1, OIS4x2, ESS1x2, BIS1

Table 24 illustrates boards with different combinations to implement the different functions.

T AB L E 24 . B O A R D C O M B I N AT I O N S I N OL1/4 S U B S Y S T E M

Function Boards Involved

STM-1 optical interface function

LP1x1 (or LP1x2), OIS1x1 (or OIS1x2)

STM-1 electrical interface function

LP1x1 (or LP1x2), ESS1x2

STM-1 electrical interface function with 1:N protection

LP1x1 (or LP1x2), ESS1x2, BIS1

STM-4 optical interface function

LP4x1, OIS4x1, LP4x2, OIS4x2

The positions of boards in the OL1/4 subsystem are filled gray in Figure 32.

Subsystem Functions

Composition

Position in Subrack



F I G U R E 32 . PO S I T I O N S O F B O AR D S I N T H E OL1/4 S U B S Y S T E M

Cable outlet area

PWR PWR 12 177 865432 111

Fan unitFan unit

L6L5L4L3L2L1SAI

NCP

SAI

OCS4/

16

OCS4/

16

Table 25 describes the available slots for each board.

T AB L E 25 . AV A I L A B L E S L O T S F O R B O AR D S I N T H E OL1/4 S U B S Y S T E M

Board ID Available Slots

Remarks

LP1x1, LP1x2

1 to 6 -

LP4x1, LP4x2

5, 6 -

BIS1 L1 to L6

Used when 1:N protection is required for the STM-1 electrical interface

Inserted in the service interface board slot corresponding to the protection board.

OIS1x1, OIS1x2

L1 to L6 -

ESS1x2 L1 to L6 -

OIS4x1, OIS4x2

L5, L6 -

Note: The service board slots of 1 to 6 respectively correspond to the interface board slots of L1 to L6.

Chapter 3 - Boards


LP1x1/LP1x2/LP4x1/LP4x2 Boards

These four boards are line processor boards.

The LP1x1 or LP1x2 board performs the following functions:

Can process 1 or 2 channels of STM-1 interface

Forwards EMS information from optical line to NCP board, and outputs the received reference clock to OCS4/OCS16 board.

Works with the electrical interface board to access STM-1 electrical interface, and implements the asynchronous mapping/demapping of electrical signals

Works with the electrical interface switching board ESS1 and bridge interface board BIS1 to implement 1:N (N≤5) protection for STM-1 electrical interface

Works with the optical interface board OIS1 to access the STM-1 optical interface; implements the conversion between optical signal and electrical signal; and separates data from overhead

The LP4x1 or LP4x2 board performs the following functions:

Can process one or two channels of STM-4 interface

Forwards EMS information from optical line to NCP board, and outputs the received reference clock to OCS4/OCS16 board

Works with the optical interface board OIS4 to access the STM-4 optical interface; implements the conversion between optical signal and electrical signal; and separates data from overhead

Figure 33 shows the functional blocks of LP1x1/LP1x2/ LP4x1/LP4x2 boards

F I G U R E 33 . FU N C T I O N AL B L O C K D I AG R A M O F LP1 X1 /LP1 X 2 /LP4 X 1 /LP4 X 2 B O AR D S

Multiplexing/Demultiplexing unit

OIS1x1/OIS1x2/ OIS4x1/OIS4x2/ESS1x2 board

Monitoring unit NCP board

OCS4/OCS16 board


Control unit

Functions

Functional Blocks



Table 26 describes the functions of each functional block.

T AB L E 26 . D E S C R I P T I O N O F LP1 X 1 /LP1 X 2/LP4 X 1 /LP4 X2 B O AR D FU N C T I O N AL B L O C K S

Functional Block

Functions

Multiplexing/ Demultiplexing unit

Implements the multiplexing/demultiplexing between the interface board signals and the motherboard signals.

Control unit

Provides interfaces and channels via which it can communicate with the NCP to perform such functions as performance statistics, alarm detection, temperature control, status setting, and inter-board communications.


Separates/inserts payload from/into overhead, and processes the overhead.

Processes and inserts section overhead (SOH) and path overhead (POH).

Implements such functions as pointer processing, alarm processing, bit error statistics, as well as various decoding functions.

Outputs AU-AIS at the corresponding optical interface according to the VC-4 level alarm indication.

Monitoring unit

Performs various monitoring functions, such as optical power detection

The front panels of LP1x1, LP1x2, LP4x1, and LP4x2 boards are identical, as shown in Figure 34.

F I G U R E 34 . LP1 X 1 /LP1 X 2 /LP4 X 1 /LP4 X 2 B O AR D FR O N T P AN E L

1. Running status indicator (RUN) 2. Master/standby indicator (M/S) 3. Alarm Indicator (ALM)

Front Panel

Chapter 3 - Boards


Table 27 describes the indicators on the front panel.

T AB L E 27 . I N D I C AT O R S O N T H E LP1 X 1/LP1 X 2 /LP4 X 1 B O AR D FR O N T P AN E L

Indicator Name

Description

RUN Running status indicator (green). It flashes periodically and slowly if the board is running normally.

M/S

Master/standby indicator (green). It is on if the board is in active status. It is off if the board is in standby status. When there is no board protection, it is on if the board works normally.

ALM Alarm Indicator (red). It is off if the board detects no alarm. It is on if the board detects alarm.

None

Refer to the Overview section of the OL1/4 subsystem.

OIS1x1/OIS1x2/OIS4x1/OIS4x2 Boards

These boards are optical interface boards.

OIS1x1 or OIS1x2 board performs the following functions:

OISx1 board provides one STM-1 optical receive interface and one STM-1 optical transmit interface.

OIS1x2 board provides two STM-1 optical receive interfaces and two STM-1 optical transmit interfaces.

The optical transmit interface can automatically shut down the laser.

OIS4x1 or OIS4x2 board performs the following functions:

OIS4x1 board provides one STM-4 optical receive interface and one STM-4 optical transmit interface.

OIS4x2 board provides two STM-4 optical receive interface and two STM-4 optical transmit interface.

The optical transmit interface can automatically shut down the laser.

These boards have the same working principle:

At the receive side, the board receives the optical signal inputted from the outside. Then it converts the 622 Mbit/s or 155 Mbit/s optical signal into electrical signal and extracts the line signal. Finally, it sends the processed electrical signal

Indicators

Interface

Position in Subrack

Functions

Working Principle



to the line processor board via the motherboard for further processing.

At the transmit side, the board receives the electrical signal sent by the line processor board via the motherboard. Then, it converts the electrical signal into the 622 Mbit/s or 155 Mbit/s optical signal. Finally, it transmits the optical signal to the outside.

None

None

OIS1x2 board provides two optical interface pairs with the connector type of SC/PC, as shown in Figure 35.

OIS1x1/OIS4x1/OIS4x2 boards have similar structures as OIS1x2 board, except that OIS1x1 or OIS4x1 board provides one optical interface pair.

F I G U R E 35 . O IS1 X 2 B O AR D I N T E R F AC E S

1. Optical transmit interface 1 2. Optical receive interface 1 3. Optical transmit interface 2 4. Optical receive interface 2


Front Panel

Indicator

Interfaces

Position in Subrack

Chapter 3 - Boards


ESS1x2 Board

The ESS1x2 board is the interface switching board. It has the following functions:

Provides two STM-1 electrical interface pairs for LP1x1/LP1x2 board.

When the 1:N (N≤5) protection for tributary board is not required, ESS1x2 board only performs STM-1 electrical interface function.

When the 1:N (N≤5) protection for tributary board is required, the ESS1x2 board works with the BIS1 board to implement the 1:N (N≤5) protection for tributary board.

At the receive side, the ESS1x2 board receives the 155 Mbit/s electrical signal from the outside. Then it processes the electrical signal and extracts the line signal. Finally, it sends the processed electrical signal to LP1x1/LP1x2 board via the motherboard for further processing.

At the transmit side, the ESS1x2 board receives the 155 Mbit/s electrical signal sent by LP1x1/LP1x2 board via the motherboard. It processes the electrical signal, and then sends the signal to the outside.

In the case of 1:N protection for LP1x1/LP1x2 board, the ESS1x2 board decides whether to send the electrical signal to the working LP1x1/LP1x2 board or to the protection LP1x1/LP1x2 board according to the control signal from the OCS4/OCS16 board.

None

None

The ESS1x2 board provides two electrical interfaces pairs, which use 1.0/2.3 bended PCB welded (screws attached) sockets (female), as shown in Figure 36.

Functions

Working Principle

Front Panel

Indicator

Interfaces



F I G U R E 36 . ESS1 X 2 B O AR D I N T E R F AC E S

1. Electrical receive interface 1 2. Electrical transmit interface 1 3. Electrical receive interface 2 4. Electrical transmit interface 2


BIS1 Board

The BIS1 board is the bridge interface board. It has the following functions:

Used when the 1:N (N≤5) protection for tributary board is required, and inserted in service interface board slot corresponding to the protection board.

According to the protection control signal from OCS4/OCS16 board, the BIS1 board functions as a bridge between the protection LP1x1/LP1x2 board and the ESS1x2 board corresponding to the faulty board.

The BIS1 board bridges the service signal of its corresponding protection board to the public standby-signal pins on the motherboard.

None

None

None


Position in Subrack

Functions

Working Principle

Front Panel

Indicator

Interface

Position in Subrack

Chapter 3 - Boards


Subsystem Configuration Example

Figure 37 shows a configuration example of OL1/4 subsystem.

With this configuration, the subsystem can process STM-1 electrical service.

It can provide one group of 1:3 protection for LP1x1 boards. The LP1x1 board in slot 1 is the protection board. The LP1x1 boards in slots 2, 3, and 4 are the working boards.

It can also process STM-1/STM-4 optical service.

F I G U R E 37 . CO N F I G U R AT I O N E X AM P L E O F OL1/4 S U B S Y S T E M

Cable outlet area

PWR 12 177 865432 111

FANFAN

L6L5L4L3L2L1SAI

N

C

P

S

A

I

OCS4

OCS4

PWR

BIS1

ESS1x2

ESS1x2

ESS1x2

LP1x1

LP1x1

LP1x1

LP1x1

OL1/4x4

OL1/4x4



OA Board OA board amplifies one channel of optical signal.

Its amplification function is independent of optical signal rate.

By amplifying the optical power of light with 1550 nm wavelength, OA board can improve the non-regenerator transmission distance and provide transparent transmission channel for optical signals.

The data rate can be 2.5 Gbit/s, 622 Mbit/s, or 155 Mbit/s.

OA board supports query of four parameters: optical launched power, optical received power, module temperature, and laser working current.

Figure 38 shows the connection relations among OA board and other optical line boards.

The east optical line board sends optical signals to the OA board. The OA board receives the signals, then amplifies the optical signals, and sends them to the west optical line board. Finally, the west optical line board receives the amplified optical signals.

F I G U R E 38 . CO N N E C T I O N RE L AT I O N S AM O N G O A B O A R D AN D OT H E R B O AR D S

In practice, OA boards are classified into Optical Booster Amplifier (OBA), Optical Pre-Amplifier (OPA), or Optical Line Amplifier (OLA) according to the position and effect of EDFA. Refer to Appendix A Terminologies for the illustrations of EDFA.

OBA locates at the transmitting end of the system. It boosts the optical launched power of the system, and extends the distance of the regenerator.

OPA locates at the receiving end of the system. It amplifies the weak transmitted signals, and boosts the input power of the system receiver.

OLA locates in the middle of the optical fiber line of the system. It replaces the optical regenerator.

The ZXMP S325 can use OBA board and OPA board.

Functions

Connection Relations

OA Board Categories

Chapter 3 - Boards


Figure 39 shows the functional block diagram of OA board. Table 28 describes each functional block.

F I G U R E 39 . FU N C T I O N AL B L O C K D I AG R A M O F O A B O A R D

Control unit

Optical amplificationunit

Initializationand query unit

Input opticalsignal

Output opticalsignal

NCP

T AB L E 28 . D E S C R I P T I O N O F O A B O AR D FU N C T I O N AL B L O C K S

Functional Block

Function

Optical amplification unit

Amplifies the power of input optical signal at the 1550 nm working window.

Control unit Controls the optical amplification unit. Monitors and reports alarms and performance events of OA board.

Initialization and query unit

Initializes the optical amplification unit. Communicates with the optical amplification unit at real time. Queries performance and sets parameters of the optical amplification unit.

The front panels of OBA board and OPA board are similar except that they have different labels. Figure 40 shows the front panel of OBA board.

Functional Blocks

Front Panel



F I G U R E 40 . FR O N T P AN E L O F OB A B O A R D

1. Running status indicator (RUN) 2. Work indicator (M/S) 3. Alarm indicator (ALM) 4. Optical transmit interface and receive interface (TX, RX) 5. Laser warning sign 6. Laser level sign





OBA board provides one optical receive interface (RX) and one optical transmit interfaces (TX). Their connectors are both LC/PC type.



OA board can be inserted in any service board slot in ZXMP S325 subrack, i.e., any slot of slot 1 to slot 6, slot 11, and slot 12.

The grey part in Figure 41 shows the available slots of OA board.

Indicators


Position in Subrack

Chapter 3 - Boards


F I G U R E 41 . AV A I L A B L E S L O T S O F OA B O AR D

Cable outlet area

PWR PWR 12 177 865432 111

Fan unitFan unit

L6L5L4L3L2L1SAI

NCP

SAI

OCS4/

16

OCS4/

16



EP1 Subsystem Overview

Performs asynchronous mapping/demapping of PDH E1/T1 electrical signals.

Provides 1:N (N≤6) protection for tributary boards.

The EP1 subsystem comprises EPE1x21, EPT1x21, EPE1B, BIE1x21, and ESE1x21 boards.

Subsystem with different board combinations can implement different functions, as listed in Table 29.

T AB L E 29 . C O M B I N AT I O N S O F B O AR D S I N EP1 S U B S Y S T E M


E1 electrical signal processing function

EPE1x21 (or EPE1B) and ESE1x21

1:N (N≤5) protection for E1 electrical tributary

EPE1x21 (or EPE1B), BIE1x21, and ESE1x21

1:6 protection for E1 electrical tributary

EPE1x21 (or EPE1B) [Note] and ESE1x21

T1 electrical signal processing function

EPT1x21 (or EPE1B) and ESE1x21

1:N (N≤5) protection for T1 electrical tributary

EPT1x21 (or EPE1B), BIE1x21, and ESE1x21

1:6 protection for T1 electrical tributary

EPT1x21 (or EPE1B) [Note] and ESE1x21

Note: The protection EPE1x21/EPT1x21/EPE1B board must be inserted in slot 11.

The positions of boards in EP1 subsystem are shown in Figure 42.

Subsystem Functions

Composition

Position in Subrack

Chapter 3 - Boards


F I G U R E 42 . PO S I T I O N S O F EP1 S U B S Y S T E M BO AR D S

Cable outlet area

PWR PWR 12 177 865432 111

Fan unitFan unit

L6L5L4L3L2L1SAI

NCP

SAI

OCS4/

16

OCS4/

16

Slots for EPE1x21, EPT1x21, and EPE1B boards: slots 1 to 6

Slots for BIE1x21 and ESE1x21 boards: slots L1 to L6

Slot 11 can only be occupied by the standby (protection) EPE1x21/EPT1x21/EPE1B board. No BIE1x21 board is required for the protection board inserted in slot 11.

EPE1x21/EPT1x21/EPE1B Boards

These boards are (electrical) tributary boards.

EPE1x21 or EPT1x21 board has the following functions:

Maps and demaps E1 or T1 electrical signals. Each board can process at most 21 channels of electrical signals.

The timeslots to add service and the timeslots to drop service can be different.

Implements the path protection for VC-12/VC-11 between two groups of AU buses. The two paths protecting each other can be in different timeslots of two groups of AU buses.

Processes two groups of AU buses sent by the OCS4 board according to the “concurrent transmitting and preferred receiving” principle. The "preferred receiving" is implemented by detecting alarm and performance data in different timeslots, and then selecting the relatively normal timeslots for demapping. The "concurrent transmitting" is implemented by sending data to different AU bus timeslots concurrently.

Extracts and inserts higher-order/lower-order path overheads.

Functions



Supports tributary retiming of at most four tributaries (the first to the fourth E1/T1 tributaries).

Works with BIE1x21 and ESE1x21 boards to implement the 1:N (N≤6) protection for EPE1x21/EPT1x21/EPE1B board.

EPE1B board has all the functions of EPE1x21 and EPT1x21 boards. In addition, its E1/T1 interface supports the unframing and framing methods:

Unframing method: The board only detects the LOS alarm at E1/T1 interface, AIS alarm, and the CV performance count.

Framing method: Besides all the information detected in the unframing method, the board also detects the LOF and RAI framing alarm of received E1/T1 signal, and displays them on the EMS. User can judge if the fault lies in the opposite-end equipment or the terminal equipment according to the EMS framing alarm information, and then solve the fault on site.

Figure 43 shows the EPE1x21, EPT1x21, and EPE1B boards functional block diagram.

F I G U R E 43 . FU N C T I O N AL B L O C K D I AG R AM O F EPE1 X 21 /EPT1 X 21 /EPE1B B O AR D S

Service processing

unit

Clock unit

E1/T1 tributary service

System clock, frame head

Control unit Power

supply unitNCP board

OCS4/OCS16 board

The functional blocks are described in Table 30.

T AB L E 30 . D E S C R I P T I O N O F EPE1 X21 /EPT1 X 21 /EPE1B B O AR D FU N C T I O N AL B L O C K S



Maps tributary service to the corresponding AU timeslot, and extracts tributary service from the corresponding AU timeslot

Implements the path protection for tributary service

Functional Blocks

Chapter 3 - Boards



Extracts/inserts path overheads

Clock unit

Allocates the system clock to the clock required by the board itself

Implements tributary retiming

Notifies the OCS4/OCS16 board of a clock alarm

Control unit

Provides interfaces and channels to communicate with the NCP board

Implements performance statistics, alarm detection, status setting, and communication between boards

Supports online upgrade of the board software

Power supply unit

Filters and allocates the power required by the board itself

The front panels of the EPE1x21, EPT1x21, and EPE1B boards are identical, as shown in Figure 44.

F I G U R E 44 . FR O N T P AN E L O F EPE1 X 21/EPT1 X 21/EPE1B B O AR D

1. Running status indicator (RUN) 2. Master/standby indicator (M/S) 3. Alarm indicator (ALM)


Front Panel

Indicators



T AB L E 31 . I N D I C AT O R S O N T H E EPE1 X 21 /EPT1 X21 /EPE1B B O AR D FR O N T P AN E L

Indicator Name

Description


M/S



None

Refer to the Overview section of the EP1 subsystem.

Interface

Position in Subrack

Chapter 3 - Boards


ESE1x21 Board

The ESE1x21 board is the interface switching board. It has the following functions:

Provides twenty-one E1/T1 electrical interface pairs for EPE1x21/EPT1x21/EPE1B board.

When the protection for tributary board is not required, ESE1x21 board only performs E1/T1 electrical interface function.

When the 1:N (N≤5) protection for tributary board is required, ESE1x21 board works with the BIE1x21 board to implement the 1:N (N≤5) protection for tributary board.

When the 1:6 protection for tributary board is required, ESE1x21 board works with the protection tributary board inserted in slot 11 to implement the 1:6 protection.

At the receive side, the ESE1x21 board receives the electrical signal from the outside, and then sends the signal to the electrical tributary board via the motherboard for processing.

At the transmit side, the ESE1x21 board receives the signal sent by the electrical tributary board via the motherboard, and then sends the signal to the outside.

In the case of 1:N (N≤6) protection for tributary board, ESE1x21 board determines whether to send the electrical signal to the working tributary board or to the protection tributary board according to the control signal from OCS4/OCS16 board.

None

None

Figure 45 illustrates the ESE1x21 board interface.

Functions

Working Principle

Front Panel

Indicator

Interface



F I G U R E 45 . ESE1 X 21 B O AR D I N T E R F AC E

1. Electrical interface

The electrical interface employs a 50 × 2 layered 3-wall bended PCB welded flat cable socket (male). Table 32 lists the interface pin definitions.

T AB L E 32 . P I N S I G N AL D E F I N I T I O N S O F ESE1 X 21 B O AR D E L E C T R I C AL I N T E R F AC E

Pin S.N

Signal Defini-tion

Pin S.N.

Signal Defini-tion

Pin S.N

Signal Defini-tion

Pin S.N

Signal Defini-tion

100 SR1- 75 SR1+ 50 SR13- 25 SR13+

99 ST1- 74 ST1+ 49 ST13- 24 ST13+

98 SR2- 73 SR2+ 48 SR14- 23 SR14+

97 ST2- 72 ST2+ 47 ST14- 22 ST14+

96 SR3- 71 SR3+ 46 SR15- 21 SR15+

95 ST3- 70 ST3+ 45 ST15- 20 ST15+

94 SR4- 69 SR4+ 44 SR16- 19 SR16+

93 ST4- 68 ST4+ 43 ST16- 18 ST16+

92 SR5- 67 SR5+ 42 SR17- 17 SR17+

91 ST5- 66 ST5+ 41 ST17- 16 ST17+

90 SR6- 65 SR6+ 40 SR18- 15 SR18+

89 ST6- 64 ST6+ 39 ST18- 14 ST18+

88 SR7- 63 SR7+ 38 SR19- 13 SR19+

87 ST7- 62 ST7+ 37 ST19- 12 ST19+

86 SR8- 61 SR8+ 36 SR20- 11 SR20+

85 ST8- 60 ST8+ 35 ST20- 10 ST20+

Chapter 3 - Boards


Pin S.N

Signal Defini-tion

Pin S.N.

Signal Defini-tion

Pin S.N

Signal Defini-tion

Pin S.N

Signal Defini-tion

84 SR9- 59 SR9+ 34 SR21- 9 SR21+

83 ST9- 58 ST9+ 33 ST21- 8 ST21+

82 SR10- 57 SR10+ 32 - 7 -

81 ST10- 56 ST10+ 31 - 6 -

80 SR11- 55 SR11+ 30 - 5 -

79 ST11- 54 ST11+ 29 - 4 -

78 SR12- 53 SR12+ 28 - 3 -

77 ST12- 52 ST12+ 27 - 2 -

76 - 51 - 26 - 1 -

Notes:

Refer to Figure 45 for the pin numberings.

SRn- and SRn+ represent for the received signal of channel n, while STn- and STn+ represent for the transmitted signal of channel n.


BIE1x21 Board

The BIEx21 board is the bridge interface board. It has the following functions:

Functions as a bridge between the protection tributary board and the interface switching board corresponding to the faulty tributary board.

Used only when 1:N (N≤5) protection for E1/T1 tributary board is required.

Inserted in the interface board slot corresponding to the protection EPE1x21/EPT1x21/EPE1B board.

The BIE1x21 board bridges the service signal of its corresponding protection board to the public standby-signal pins on the motherboard.

None

None

Position in Subrack

Functions

Working Principle

Front Panel

Indicator



None


Note: If the EPE1x21/EPT1x21/EPE1B protection board is inserted in slot 11, BIE1x21 board is not needed.


Figure 46 shows a configuration example of EP1 subsystem.

With this configuration, the system can process E1 electrical service.

It can provide one group of 1:3 protection for EPE1x21 boards. The EPE1x21 board in slot 1 is the protection board. The EPE1x21 boards in slots 2, 3, 4 are the working boards.


F I G U R E 46 . CO N F I G U R AT I O N E X AM P L E O F EP1 S U B S Y S T E M

Cable outlet area

PWR 12 177 865432 111

FANFAN

L6L5L4L3L2L1SAI

NCP

SAI

OCS4

OCS4

PWR

BIE1x

21

ESE1x

21

ESE1x

21

ESE1x

21

EPE1x

21

OL1/4x4

OL1/4x4

EPE1x

21

EPE1x

21

EPE1x

21

Interface

Position in Subrack

Chapter 3 - Boards


EP3 Subsystem Overview

Performs the asynchronous mapping/demapping of PDH E3/T3 electrical signals.

Provides 1:N (N≤5) protection for tributary boards.

Comprises EP3x3, ESE3x3, and BIE3x3 boards.

Can implement different functions with different board combinations, as listed in Table 33.

T AB L E 33 . C O M B I N AT I O N O F B O AR D S I N EP3 S U B S Y S T E M


E3 electrical signal processing function EP3x3, ESE3x3

1:N (N≤5) protection for E3 electrical tributary EP3x3, BIE3x3, ESE3x3

T3 electrical signal processing function EP3x3, ESE3x3

1:N (N≤5) protection for T3 electrical tributary EP3x3, BIE3x3, ESE3x3

Figure 47 shows the positions of boards in the EP3 subsystem.

F I G U R E 47 . EP3 S U B S Y S T E M B O AR D P O S I T I O N S

Cable outlet area

PWR PWR 12 177 865432 111

Fan unitFan unit

L6L5L4L3L2L1SAI

NCP

SAI

OCS4/

16

OCS4/

16

Slots for EP3x3 boards:

No board protection: slots 1 to 6

Subsystem Functions

Composition

Position in Subrack



With 1:N (N≤5) board protection: the EP3x3 protection board must be inserted in slot 1.

Slots for ESE3x3 board: slots L1 to L6

Slot for BIE3x3 board: slot L1

EP3x3 Board

EP3x3 board is a tributary board. Its functions are described below:

Processes three channels of E3 or T3 services. Its port rate can be configured as E3 or T3 via the EMS.

Supports the mapping/demapping and multiplexing/ demultiplexing of three channels of E3 or T3 signals into/from any timeslot of AU-4.

Supports the unframing and framing methods:

Unframing method: For E3 interface, EP3x3 board detects LOS/AIS alarm and CV performance count. For T3 interface, EP3x3 board only detects LOS alarm and CV performance count.

Framing method: Besides all the information detected in the unframing method, EP3x3 board also detects the LOF/RAI framing alarm of received E3/T3 signal, and AIS alarm of received T3 signal; and displays them on the EMS. User can judge whether fault is caused by transmission equipment or by terminal equipment according to the EMS framing alarm information, and then solve the fault on site.

The timeslots to add service and the timeslots to drop service can be different.

Implements the path protection for VC-3 between two groups of AU buses.

Supports the extraction and insertion of VC-3 path overhead.

Reads the alarm and performance information of the AU bus, the E3/T3 interface, and the VC-3 path. And reports them to the EMS.

Can work with BIE3x3 and ESE3x3 boards to implement the 1:N (N≤5) protection for EP3x3 board.

Figure 48 shows the functional blocks of EP3x3 board.

Functions

Functional Blocks

Chapter 3 - Boards


F I G U R E 48 . FU N C T I O N AL B L O C K D I AG R A M O F EP3 X 3 B O AR D


Control unit

Clock unit

Line interface unit E3/T3 tributary service

System clock

Reference clock

NCP board

OCS4/OCS16 board


T AB L E 34 . FU N C T I O N AL B L O C K S O F EP3X 3 B O AR D


Clock unit Allocates the system clock to the clock required by

the board itself.

Provides clock source to the line interface unit.

Line interface unit Outputs/inputs the E3 or T3 signal.


Maps and demaps the service timeslots of the board.

Implements the path protection for tributary service.

Processes pointer and path overhead.

Control unit

Provides channels to communicate with the NCP board.

Implements performance statistics, alarm detection, status setting, and communication between boards.

The front panels of EP3x3 board is shown in Figure 49. Front Panel



F I G U R E 49 . FR O N T P AN E L O F EP3X 3 B O A R D



T AB L E 35 . I N D I C AT O R S O N EP3 X 3 B O AR D FR O N T P AN E L

Indicator Name

Description


M/S



None


ESE3x3 Board

The ESE3x3 board is the interface switching board. It has the following functions:

Provides three E3/T3 electrical interface pairs for EP3x3 board.

Indicators

Interface

Position in Subrack

Functions

Chapter 3 - Boards


When the protection for tributary board is not required, ESE3x3 board only performs E3/T3 electrical interface function.

When the 1:N (N≤5) protection for tributary board is required, ESE3x3 board works with the BIE3x3 board to implement the 1:N (N≤5) protection for tributary board.

At the receive side, ESE3x3 board receives the electrical signal from the outside, and then sends the signal to the electrical tributary board via the motherboard for processing.

At the transmit side, ESE3x3 board receives the signal sent by the electrical tributary board via the motherboard, and then sends the signal to the outside.

In the case of 1:N (N≤5) protection for EP3x3 board, ESE3x3 board determines whether to send the electrical signal to the working EP3x3 board or to the protection EP3x3 board according to the control signal from the OCS4/OCS16 board.

None

None

Figure 50 illustrates the interfaces on the ESE3x3 board front panel.

F I G U R E 50 . ESE3 X 3 B O AR D I N T E R F AC E S

1. Electrical receive interface 1 2. Electrical transmit interface 1 3. Electrical receive interface 2 4. Electrical transmit interface 2 5. Electrical receive interface 3 6. Electrical transmit interface 3

Working Principle

Front Panel

Indicator

Interfaces



ESE3x3 board provides three electrical interface pairs which employ 1.0/2.3 bended PCB welded (screws attached) sockets (female).


BIE3x3 Board

The BIE3x3 board is the bridge interface board. It has the following functions:

Functions as a bridge between the protection tributary board and the interface switching board corresponding to the faulty tributary board.

Used only when 1:N (N≤5) protection for EP3x3 board is required.

Inserted in the service interface board slot corresponding to the protection EP3x3 board.

The BIE3x3 board bridges the service signal of its corresponding protection board to the public standby-signal pins on the motherboard.

None

None

None



Figure 51 shows a configuration example of EP3 subsystem.

With this configuration, the system can process E3 electrical service.

It can provide one group of 1:3 protection for EP3x3 boards. The EP3x3 board in slot 1 is the protection board. The EP3x3 boards in slots 2, 3, 4 are the working boards.


Position in Subrack

Functions

Working Principle

Front Panel

Indicator

Interface

Position in Subrack

Chapter 3 - Boards


F I G U R E 51 . CO N F I G U R AT I O N E X AM P L E O F EP3 S U B S Y S T E M

Cable outlet area

PWR 12 177 865432 111

FANFAN

L6L5L4L3L2L1SAI

NCP

SAI

OCS4

OCS4

PWR

BIE3x3

ESE3x3

ESE3x3

ESE3x3

EP3x3

OL1/4x4

OL1/4x4

EP3x3

EP3x3

EP3x3



EOS Subsystem Overview

Provides Ethernet electrical or optical interfaces.

Provides 1:N (N≤5) protection for Ethernet electrical interface.

Connects the services between LANs, and between LAN and WAN, through the SDH system interconnect function.

The EOS subsystem comprises SFEx6, EIFEx4, OIS1x4 and BIFE boards.

The subsystem with different board combinations can implement different functions, as listed in Table 36.

T AB L E 36 . C O M B I N AT I O N S O F B O AR D S I N EOS S U B S Y S T E M


Ethernet electrical interface function SFEx6 and EIFEx4

1:N (N≤5) protection for Ethernet electrical interface SFEx6, EIFEx4, and BIFE

Ethernet optical interface function SFEx6 and OIS1x4

Note: There is no protection for Ethernet optical interface.

The EOS subsystem board positions in the subrack are shown in Figure 52.

Subsystem Functions

Composition

Position in Subrack

Chapter 3 - Boards


F I G U R E 52 . EOS S U B S Y S T E M B O AR D P O S I T I O N S

Cable outlet area

PWR PWR 12 177 865432 111

Fan unitFan unit

L6L5L4L3L2L1SAI

NCP

SAI

OCS4/

16

OCS4/

16

Slots for SFEx6 board: slots 1 to 6

Slots for EIFEx4 and OIS1x4 boards: slots L1 to L6

Slot for BIFE board: the service interface board slot corresponding to the SFEx6 protection board. It is used only in the case of 1:N (N≤5) protection for Ethernet electrical interface.

The service slots 1 to 4 only support two AU-4 buses. The service slot 5 supports four AU-4 buses. The service slot 6 supports four AU-4 buses with OCS4 board installed, and supports 16 AU-4 buses with OCS16 board installed.

SFEx6 Board

SFEx6 board is the smart fast Ethernet board. It implements the switching, mapping, and demapping between Ethernet interfaces.

It has the following functions:

Provides four user ports (LAN access ports) to process four channels of optical or electrical Ethernet services. The physical electrical interfaces are provided by EIFEx4 board, and the physical optical interfaces are provided by OIS1x4 board.

Provides six system ports (WAN interfaces) at the system side, and each with bandwidth of N×2.176 M.

Each WAN interface can be allocated with one to forty-six VC-12s, i.e., 2 M to 100 M, (using virtual concatenation method) as per the requirement.

Functions



Up to 252 VC-12s can be allocated to all the WAN interfaces at the system side.

The service of any WAN interface at the system side is carried by N (1 to 46) bound VC-12s.

The bindings are configured in the EMS. Multiple bound VC-12s are mapped into VC-4 using the virtual concatenation method.

Provides four LAN interfaces (user ports) that can switch between each other at the L2 (the second layer of OSI model) line rate. In the transparent transmission mode, the four LAN interfaces and the first to fourth WAN interfaces can implement the complete transparent transmission of fixed connections.

The board supports two VLAN modes: port-based VLAN and TAG-based VLAN.

All the ports support 4094 VLAN IDs.

In the EMS, the user can configure VLAN, flow control, address learning, spanning tree, QoS, and Trunk.

Demaps timeslots from the AU buses, and maps the tributary services into the corresponding AU timeslots.

Provides path protection for tributary service.

Extracts/inserts higher-order/lower-order path overheads.

Figure 53 shows the SFEx6 board functional blocks.

F I G U R E 53 . FU N C T I O N AL B L O C K D I AG R A M O F SFE X 6 B O AR D

Mapping/Demapping

module

Control unit

Clock allocation unit

Power supply unit

System clock, frame head

L2 switching module

Ethernet interface

unit

Optical/electrical interface board

Table 37 illustrates the functional blocks.

Functional Blocks

Chapter 3 - Boards


T AB L E 37 . D E S C R I P T I O N O F SFE X 6 B O AR D FU N C T I O N AL B L O C K S

Functional Block

Functions

L2 switching module

Implements layer-2 switching between the user port and the system port

Ethernet interface module

Connects the layer-2 switching module with optical interface board OIS1x4 or the electrical interface board EIFEx4

Mapping/Demapping unit

Drops timeslot from the AU bus, recovers the virtual concatenation, deframes to extract the Ethernet traffic and submits it to the L2 switching module for processing.

Maps the Ethernet traffic to the corresponding AU timeslot through GFP packet encapsulation.

Implements the path protection for tributary service.

Extracts/inserts higher-order/lower-order path overheads.

Clock allocation unit

Allocates the system clock to the clock required by the board itself.

Notifies the OCS4 board of a clock alarm.

Control unit

Communicates with the NCP board and other boards.

Supports online upgrade of the board software.

Power supply unit

Filters and distributes the power required by the board itself

Note: The user port refers to the port connected to the local Ethernet service user. The system port refers to the internal Ethernet port connected with SDH.

SFEx6 board front panel is shown in Figure 54. Front Panel



F I G U R E 54 . SFE X 6 B O AR D FR O N T P AN E L



T AB L E 38 . I N D I C AT O R S O N T H E SFE X6 BO AR D FR O N T P AN E L

Indicator Name

Description


M/S



None

Refer to the Overview section of the EOS subsystem.

EIFEx4 Board

Connects the electrical interface signals from SFEx6 board to the outside, and provides four RJ45 Ethernet electrical interfaces.

Indicators

Interface

Position in Subrack

Functions

Chapter 3 - Boards


Works with BIFE board together to provides 1:N (N≤5) protection for SFEx6 board which processes the Ethernet electrical service.

At the receive side, EIFEx4 board receives the electrical signal from the outside, and then sends the signal to the electrical tributary board via the motherboard for processing.

At the transmit side, the EIFEx4 board receives the signal sent by the electrical tributary board via the motherboard, and then sends the signal to the outside.

In the case of 1:N protection for SFEx6 board, EIFEx4 board determines whether to send the electrical signal to the working SFEx6 board or to the protection SFEx6 board according to the control signal from OCS4/OCS16 board.

None

None

The interfaces on EIFEx4 board are Ethernet electrical interfaces of RJ45 sockets, as shown in Figure 55, with the ascending interface numberings from top to bottom.

F I G U R E 55 . I N T E R F AC E S O F E IFE X 4 B O AR D

1. Ethernet electrical interfaces

The electrical interfaces have the following features:

Support the 10 M/100 M adapted Ethernet port and comply with the IEEE 802.3 Recommendation

Support the auto-negotiation, duplex, and semi-duplex work modes with the transmission distance not less than 100 m.

The 100 M port needs to use the unshielded twisted-pair above CAT5, and the 10 M port needs to use the unshielded twisted-pair above CAT3.

Working Principle

Front Panel

Indicator

Interfaces




BIFE Board

BIFE board is the bridge interface board. It has the following functions:

Functions as a bridge between the protection SFEx6 board and the interface switching board (EIFEx4) corresponding to the faulty SFEx6 board.

Used only when 1:N (N≤5) protection for SFEx6 board is required.

Inserted in the interface board slot corresponding to the protection SFEx6 board.

The BIFE board bridges the service signal of its corresponding protection board to the public standby-signal pins on the motherboard.

None

None

None


Position in Subrack

Functions

Working Principle

Front Panel

Indicator

Interface

Position in Subrack

Chapter 3 - Boards


OIS1x4 Board

OIS1x4 board is the optical interface board. It has the following functions:

At the receive side, it converts the optical signal into electrical signal.

At the transmit side, it converts the electrical signal into optical signal.

Provides the service processing board (SFEx6 or AP1x4 board) with four optical receive interfaces and four optical transmit interfaces.

The optical transmit interfaces can shut down the laser automatically.

At the receive side, the board receives the optical signal inputted from the outside. Then it converts the 155 Mbit/s optical signal into electrical signal and extracts the line signal. Finally, it sends the processed electrical signal to the service processing board via the motherboard for further processing.

At the transmit side, the board receives the electrical signal sent by the service processing board via the motherboard. Then, it converts the electrical signal into the 155 Mbit/s optical signal. Finally, it transmits the optical signal to the outside.

None

None

The interfaces on the OIS1x4 board are Ethernet optical interfaces with LC/PC connectors, as shown in Figure 56, with the ascending interface numberings from top to bottom.

Functions

Working Principle

Front Panel

Indicator

Interfaces



F I G U R E 56 . I N T E R F AC E S O F OIS1 X 4 B O AR D

1. Ethernet optical interfaces

The optical interface supports the 100 M full-duplex work mode, and the SFP optical module.



Figure 57 shows a configuration example of EOS subsystem.

With this configuration, the system can process Ethernet electrical service.

It can provide one group of 1:3 protection for SFEx6 boards. The SFEx6 board in slot 1 is the protection board. The SFEx6 boards in slots 2, 3, 4 are the working boards.

It can also process 100 M Ethernet optical service.

Position in Subrack

Chapter 3 - Boards


F I G U R E 57 . CO N F I G U R AT I O N E X AM P L E O F EOS SU B S Y S T E M

Cable outlet area

PWR 12 177 865432 111

FANFAN

L6L5L4L3L2L1SAI

NCP

SAI

OCS4

OCS4

PWR

BIFEx4

EIFEx4

EIFEx4

EIFEx4

SFEx6

OL1/4x4

OL1/4x4

SFEx6

SFEx6

SFEx6

OIS1x4

SFEx6



ATM Subsystem Overview

The ATM subsystem converges or aggregates the ATM service data to SDH transmission network.

It comprises AP1x4 board and OIS1x4 board.

Figure 58 illustrates ATM subsystem boards positions in the subrack.

F I G U R E 58 . ATM S U B S Y S T E M B O AR D S P O S I T I O N S

Cable outlet area

PWR PWR 12 177 865432 111

Fan unitFan unit

L6L5L4L3L2L1SAI

NCP

SAI

OCS4/

16

OCS4/

16

Slots for AP1x4 board: slots 1 to 6

Slot for OIS1x4 board: slots L1 to L6.


Subsystem Functions

Composition

Position in Subrack

Chapter 3 - Boards


AP1x4 Board

The AP1x4 board is the ATM processor board. It has the following functions:

Provides four 155 Mbit/s optical interfaces at the ATM side, and four 155 Mbit/s non-concatenated data flows at the system side.

The user can select one to four VC4 channels to transmit ATM services.

It is can extract the line clock which serves as the extracted clock source for the equipment.

Supports four ATM service types: Constant Bit Rate (CBR) service, real-time Variable Bit Rate (rt-VBR) service, non real-time Variable Bit Rate (nrt-VBR) service, and Unspecified Bit Rate (UBR) service.

Supports the VP/VC local exchange.

Supports VP protection switching upon alarms such as VP-AIS, LOS, LOF, OOF, LAIS, and LCD.

Figure 59 shows the functional blocks of AP1x4 board.

F I G U R E 59 . FU N C T I O N AL B L O C K D I AG R A M O F AP1 X 4 B O AR D

OCS4/OCS16 board

Clock processing unit

ATM service processing module

Control unitOCS4/O

CS16 board

ATM service

Ethernet interface (for debugging, or

communication with the maintenance console)

OIS1x4 board

Functions

Functional Blocks




T AB L E 39 . D E S C R I P T I O N O F AP1 X 4 B O AR D FU N C T I O N AL B L O C K S

Functional Block Function

ATM service processing module

Processes ATM service: At the transmit side, it receives ATM signals from the 155 Mbit/s optical interfaces provided by OIS1x4 board, separates the ATM cells, converts them to STM-1 frame data, and then sends the data to OCS4/OCS16 board. At the receive side, it receives the ATM service data from OCS4/OCS16 board, converts the data to ATM cells, and sends them to OIS1x4 board, which then converts the optical signals into electrical signals and outputs the electrical signals.

Restores clock: Uses the system clock from OCS4/OCS16 board as reference, and restores the synchronization clock from the received optical signals.

Converts between buses: Implements the conversion between the ATM board bus and the service bus.

Clock processing unit

Receives clock signals from OCS4/OCS16 board and sends them to the ATM service processing module to serve as the receiving reference of line service data and the synchronization clock for data transmission

Control unit

Initializes the board, monitors the board at real-time, processes the EMS commands, and reports the board current alarms.

Provides interfaces and channels for the communication with NCP board, and provides a 10 M Ethernet interface for debugging or communication with the maintenance console.

Figure 60 shows the AP1x4 board front panel. Front Panel

Chapter 3 - Boards


F I G U R E 60 . AP1 X 4 B O AR D FR O N T P AN E L

1. Running Status Indicator (RUN) 2. Work Indicator (M/S) 3. Alarm Indicator (ALM)


T AB L E 40 . I N D I C AT O R S O N T H E AP1 X 4 B O AR D FR O N T P AN E L

Indicator Name

Description


M/S Work indicator (green). It is on if the board is working normally.


None

Refer to the Overview section of the ATM subsystem.

For information about the OIS1x4 board, refer to the OIS1x4 Board section of the EOS subsystem.


Figure 61 shows a configuration example of ATM subsystem.

With this configuration, the system can process ATM service.

Indicators

Interface

Position in Subrack

Related Information



F I G U R E 61 . CO N F I G U R AT I O N E X AM P L E O F ATM S U B S Y S T E M

Cable outlet area

PWR 12 177 865432 111

FANFAN

L6L5L4L3L2L1SAI

NCP

SAI

OCS4

OCS4

PWR

OIS1x4

AP1x4

OL1/4x4

OL1/4x4

Chapter 3 - Boards


RPR Subsystem Overview

Maps Ethernet traffic to RPR.

Implements the unique functions of RPR.

Uses the channel bandwidth resource of SDH/MSTP ring network to provide the dual-ringlet topology required by RPR, and to interconnect the rings.

RPR subsystem comprises RSEB, EIFEx4, and OIS1x4 boards.

Different board combinations can implement different functions, as listed in Table 41.

T AB L E 41 . C O M B I N AT I O N S O F RPR S U B S Y S T E M B O AR D S


Process RPR traffic (GE optical interface, FE electrical interface)

RSEB and EIFEx4

Process RPR service (GE optical interface, FE optical interface)

RSEB and OIS1x4

Note: EIFEx4 board provides RSEB board with electrical interfaces. OIS1x4 board provides RSEB board with optical interfaces. Refer to the 错误！未找到引用源。 section and the OIS1x4 Board section for details about these two boards.

The grey part in Figure 62 shows the positions of boards in RPR subsystem.

F I G U R E 62 . RPR S U B S Y S T E M B O AR D P O S I T I O N S

Cable outlet area

PWR PWR 12 177 8654321

Fan unitFan unit

L6L5L4L3L2L1SAI

NCP

SAI

OCS4/

16

OCS4/

16

11

Subsystem Functions

Composition

Position in Subrack



Slots for RSEB board: slots 1 to 6, slot 11, and slot 12 for service boards.

Slots for EIFEx4/OIS1x4 board: slots L1 to L6.


RSEB Board

Supports the Q in Q identification; uses the outmost 802.1Q identifier as the VLAN identifier to isolate users; participates in learning, searching, and isolating traffic on the ring network.

Supports different users by identifying them with VID (VLAN ID). Every user can have multiple VLAN IDs, so that he can be completely isolated not only at local site but also between different sites, and thus satisfies the requirement of different user for data security.

Every user can have traffic of different priorities (including class A, B, and C). And VLAN ID varies with the traffic class.

The bandwidth and peak-value rate of traffic with a certain priority can be configured.

Supports the fairness algorithm.

Supports the topology discovery and protection function, and passthrough mode.

Supports the configuration of EMS, query of alarm and performance, and other queries (including port running status and RPR ring topology relation diagram).

The RPR ring bandwidth can be configure; supports VC4-xv and VC3-xv virtual concatenation; supports the bandwidth-adjustable RPR ring with granularity of VC-4.

Supports the Bypass RPR MAC function: traffic is only switched by Ethernet and is not switched by RPR MAC.

There are two kinds of RSEB board: RSEB-RPR and RSEB-EOS.

RSEB-RPR board is the ordinary RSEB board. It provides the RPR networking function.

RSEB-EOS board implements the pure EOS function with two GE interfaces (RPR system ports) by using Bypass RPR MAC switching.

Functions

Chapter 3 - Boards


The functional block diagram of RSEB board is shown in Figure 63.

F I G U R E 63 . FU N C T I O N AL B L O C K D I AG R A M O F RSEB BO AR D

RPRproce ss ingunit (R PR

MAC)

Span 1

Span 2

802.3 Etherne tswitching unit

Loca ltra ffic

GE/FEinte rfaces

EO Sunit

(POS/EO S)

EO S system port

FE inte rface

RPR systemport

(VCG RPRSPAN po rt)

VCG (EOS)po rt

Accessside

Systemside

GE inte rfa ce

...

Ethernet traffic accesses to RPR network through four FE interfaces, two GE interfaces, or four EOS system ports. Traffic at these interfaces/ports is aggregated to the system GE interface (RPR system port) via the Ethernet switching unit, and then is sent to the RPR processing unit to implement all the functions of the RPR MAC adaptation layer.

Refer to Appendix A Terminologies for the illustrations of RPR system port, VCG (RPR Span) port, and EOS system port.

The functional blocks of RSEB board are described in Table 42.

T AB L E 42 . FU N C T I O N AL B L O C K S O F RSEB B O AR D


802.3 Ethernet switching unit

Implements the switching and aggregate of traffic among user ports, RPR system ports, and EOS system ports: Aggregates traffic of user port and EOS system port to RPR system

port Receives frames from RPR system port and allocates them to

various user ports or EOS system ports

RPR processing unit

Implements all the functions of RPR MAC adaptation layer, classifies the traffic, limits the rate, and determines the route. It implements all the RPR MAC functions described in IEEE 802.17 Recommendation, adjusts the bandwidth using fairness algorithm, forwards traffic, and performs protection.

In order to improve the bandwidth of local traffic added to the ring, 802.3 Ethernet switching unit and RPR processing unit are connected through two GE interfaces, and the two units balance the traffic between the two GE interfaces according to the configured VLAN ID.

Functional Blocks




EOS unit

Provides the RPR MAC with two ring ports for adapting RPR data frame onto SDH physical layer; provides the GFP encapsulation, VC-4 virtual container; supports virtual concatenation, with the maximum bandwidth of 2.5 Gbit/s (16×VC-4)

Provides the 802.3 Ethernet switching unit with EOS function to process traffic on RPR ring or to aggregate Ethernet traffic; provides four system ports, GFP encapsulation, VC-12 virtual container; supports virtual concatenation, LCAS protocol, with the system total bandwidth of 155 Mbit/s (63×VC-12)

The interfaces provided by EOS unit to the outside are 77 Mbit/s AU-4 buses (16 groups in total)

The front panel of RSEB board is shown in Figure 64.

F I G U R E 64 . FR O N T P AN E L O F RSEB B O AR D

1. Indicators 2. GE optical interface pair 1 3. GE optical interface pair 2 4. Laser warning sign 5. Laser level sign

There are five indicators on RSEB front panel:

RUN: Running status indicator. It is green. It flickers slowly and periodically if the board runs normally.

M/S indicator: Work indicator. It is green. It is constantly ON if the board runs normally.

ALM indicator: Alarm indicator. It is red. It is constantly OFF if the board has no alarm; otherwise, it is constantly ON.

LA1: GE optical interface status indicator. It is green. It indicates the status of the first GE optical interface pair. The

Front Panel

Indicators

Chapter 3 - Boards


indicator is constantly ON if the optical interface pair is in LINK status. The indicator flickers if the optical interface pair is transmitting or receiving packet.

LA2: GE optical interface status indicator. It is green. It indicates the status of the second GE optical interface pair. The indicator is constantly ON if the optical interface pair is in LINK status. The indicator flickers if the optical interface pair is transmitting or receiving packet.

There are two GE optical receive interfaces and two GE optical transmit interfaces on RSEB front panel. Their connectors are all LC/PC type.



Refer to the 错误！未找到引用源。 section and the OIS1x4 Board section for details about these two boards.


Figure 65 shows a configuration example of RPR subsystem. With this configuration, the system can process RPR traffic, implement RPR networking, and process 100 M Ethernet optical service.

F I G U R E 65 . CO N F I G U R AT I O N E X AM P L E O F RPR S U B S Y S T E M

Cable outlet area

PWR 12 177 865432 111

FANFAN

L6L5L4L3L2L1SAI

NCP

SAI

OCS16

OCS16

PWR

OIS1x4

RSEB


Related Information



PWR Board PWR board is the power supply board. It has the following functions:

Processes the imported -48 V DC power, and provides it to the subrack.

Supports 1+1 hot backup of PWR board.

Can prevent reverse connection of power supply, and detects over/under-voltage and board-in-position signals.

PWR board consists of four units: over-voltage/over-current protection unit with input lightning protection and reverse connection protection features, filter unit, isolated output unit, and voltage monitor unit.

The power distribution box outputs the -48 V power supply to PWR board via air switch.

PWR board filters out EMI and ripples using filter circuit, and then supplies the power to subrack.

The grey part in Figure 66 shows the PWR board position in the subrack.

F I G U R E 66 . PWR B O AR D P O S I T I O N S I N T H E S U B R AC K

Cable outlet area

PWR 12 177 865432 111

Fan unitFan unit

L6L5L4L3L2L1SAI

NCP

SAI

OCS4/

16

OCS4/

16

PWR

Functions

Working Principle

Position in Subrack

Chapter 3 - Boards


Figure 67 illustrates the PWR board front panel.

F I G U R E 67 . PWR B O AR D F R O N T P AN E L

1. Captive fastener 2. Power input interface 3. Power-on/off switch 4. Handle

The PWR board provides a -48 V DC power input interface, which uses a D-type connector with three pins. The signals of these pins from left to right are: -48 VGND, PGND, and -48 V.

Table 43 describes the switch, screw, and handle on the PWR board front panel.

T AB L E 43 . S W I T C H , S C R E W , AN D H AN D L E O N T H E PWR B O AR D FR O N T P AN E L

Name Description

Captive fastener

For fixing the PWR board.

Power-on/off switch

Controls whether to import the -48 V DC power.

Set to ON: Imports the -48 V power.

Set to OFF: Does not import the -48 V power.

Handle For plugging/unplugging the PWR board.

Front Panel

Interface

Switch and Screw





A p p e n d i x A

Terminologies

1. EDFA

If an ordinary optical fiber is doped with some other element such as erbium or praseodymium, it would be able to amplify the laser at a certain waveband.

The full name of EDFA is Erbium Doped Fiber Amplifier. At the heart of the EDFA, the fiber is doped with erbium, a rare earth element that happens to have the appropriate energy levels in its atomic structure for amplifying light at 1550 nm. When light at 1550 nm travels through the erbium doped fiber, it causes stimulated emission. In this way, the 1550 nm optical input signal gains strength.

The basic components of EDFA include the gain medium (erbium doped fiber of various types), pump source, optical passive components (optical isolator, optical multiplexer, optical demultiplexer, optical fiber connector), control unit and control interface. Among which the optical isolator prevents reverse light from influencing the EDFA; the optical fiber connector facilitates the connections among EDFA, communication system, and optical lines; the optical coupler separates part of signals from the input and output optical lines, and sends these signals to the optical monitor.

2. RPR system port

It is also known as RPR port. For user data frames, the RPR ring network only has one entrance/exit. The RPR system port is actually a channel for RPR ring network to add/drop the user traffic. The traffic received at the RPR system port and sent to the user port is called the dropped traffic; while the traffic received at the user port and sent to the RPR system port is called the added traffic.

3. RPR Span port

It is also known as VCG (RPR Span) port. It refers to the port that supports reception/transmission of RPR frames from the 802.17 network. RPR has a dual-ring structure, which is similar to the topology of SDH bidirectional MS ring. It consists of two ringlets with opposite directions, among which the clockwise ringlet is called ring 0 and the counterclockwise ringlet is called ringlet 1. Each RPR ringlet



must provide two Span ports: Span1 port and Span2 port. The Span ports implement the encapsulation/un-encapsulation and mapping/demapping between RPR frames and SDH VCG. Each Span port corresponds to one VCG, with the maximum bandwidth tunable and the granularity being VC-3 or VC-4. The Span1 port of every equipment is connected with the Span2 port of its adjacent equipment to build the RPR ring network.

The relationship between the board’s Span ports and the ring network is shown in Figure 68.

F I G U R E 68 . RE L AT I O N S H I P B E T W E E N T H E B O AR D ’ S S P A N P O R T S AN D T H E R I N G N E T W O R K

Span1 Node Span2

Add Drop

TransitRinglet 1Ringlet 0 Ringlet 1 Ringlet 0

4. EOS system port

It is also known as VCG (EOS) port. It refers to the port that supports the reception/transmission of Ethernet frames from the 802.3 network, This port is similar to the system port on the EOS board of SFE series. It receives the Ethernet frames and encapsulates them, then maps them to the VCG. Each system port corresponds to one VCG, with the maximum bandwidth of FE. In networking, the EOS system ports can connect with each other or connect with the system port on EOS board of SFE series.

5. 802.1Q identifier

In Ethernet, the 802.1Q identifier is an ID to isolate users. It is supported by data equipment with relatively powerful function such as switches and routers.

This ID includes a 3-bit QoS ID (also called 802.1p priority) and a 12-bit VID. QoS ID is used to assign the frame priority (totally there are 8 priorities), so that the frame can be transferred prior to other frame with less priority during switching. The 12-bit VID is used to isolate users. Users with different VIDs belong to different broadcast areas and cannot directly communicate with each other unless transited by the third layer equipment.

Appendix A - Terminologies


6. Q in Q

It is 802.1Q in 802.1Q. It refers to adding one layer of 802.1Q ID in front of the existed user 802.1Q ID, and isolating users of the same operator without modifying the original user ID, thus implementing the two-layer isolation (the user uses one isolation layer, and the operator uses the other one). This method is also called the Vlan Stack or Double Vlan.





A p p e n d i x B

Abbreviations

Abbreviation Full Name

A

AIS Alarm Indication Signal

APS Automatic Protection Switching

AU Administrative Unit

AUG Administrative Unit Group

AU-n Administrative Unit, level n

AU-PTR Administrative Unit Pointer

C

CBR Constant Bit Rate

C-n Container, level n

CPU Central Processing Unit

CRC Cyclic Redundancy Check

CV Coding Violation

D

DCC Data Communications Channel

E

ECC Embedded Control Channel

EMI Electro Magnetic Interference

EMS Element Management System

EOS Ethernet Over SDH

F

FAS Frame Alignment Signal

FE Fast Ethernet

G

GFP Generic Framing Procedure

H

HW High Way




I

IP Internet Protocol

ITU-T International Telecommunication Union-Telecommunication Standardization Sector

L

L2 Layer 2

LAIS Line Alarm Indication Signal

LAN Local Area Network

LCAS Link Capacity Adjustment Scheme

LCD Loss of Cell Delineation

LOF Loss Of Frame

LOP Loss Of Pointer

LOS Loss Of Signal

N

NE Network Element

O

OBA Optical Booster Amplifier

OOF Out of Frame

P

PDH Plesiochronous Digital Hierarchy

PGND Protection Ground

R

RAI Remote Alarm Indication

RPR Resilient Packet Ring

S

SDH Synchronous Digital Hierarchy

SMCC Sub-network Management Control Center

STM-N Synchronous Transport Module, level N

T

TCP Transport Control Protocol

TU Tributary Unit

TUG-m Tributary Unit Group, level m

TU-m Tributary Unit, level m

U

UBR Unspecified Bit Rate

V

VBR Variable Bit Rate

Appendix B - Abbreviations



VC Virtual Channel

VC Virtual Container

VCI Virtual Channel Indicator

VC-n Virtual Container, level n

VLAN Virtual Local Area Network

VP Virtual Path

VPI Virtual Path Indicator

VPG Virtual Path Group





Figures

Figure 1. ZXMP S325 Cabinets Outlines .................................6

Figure 2. Basic Fittings of a 2200 mm High ZXMP S325 Cabinet 7

Figure 3. Grounding Terminals and Grounding Copper Busbar of ZXMP S325 Cabinet ............................................................9

Figure 4. Structural Parts of ZXMP S325 .............................. 11

Figure 5. Subrack Structure ............................................... 15

Figure 6. Structure of Fan Box............................................ 17

Figure 7. Structure of Dustproof Unit................................... 18

Figure 8. Structure of Power Distribution Box ....................... 19

Figure 9. Pins of DB9 (Female) Socket................................. 20

Figure 10. Board Slots of ZXMP S325 Subrack ...................... 27

Figure 11. Structures of Electrical Interface/Switching Board and Optical Interface Board ..................................................... 28

Figure 12. OCS4 Board Structure ........................................ 29

Figure 13. Motherboard Structure Diagram........................... 30

Figure 14. NCP and SAI Boards Positions in a Subrack ........... 31

Figure 15. Functional Block Diagram of NCP Board ................ 33

Figure 16. NCP Board Front Panel ....................................... 34

Figure 17. Functional Block Diagram of SAI Board ................. 36

Figure 18. SAI Board Interfaces.......................................... 37

Figure 19. Position of Cross-connect and Clock Unit............... 39

Figure 20. Capacity Distribution of Motherboard Equipped with OCS16 Board ................................................................... 41

Figure 21. Functional Block Diagram of OCS16 Board............. 42

Figure 22. OCS16 Board Front Panel ................................... 43

Figure 23. Capacity Distribution of Motherboard Equipped with STM-4 OCS4 Board........................................................... 46

Figure 24. Functional Block Diagram of OCS4 Board .............. 47

Figure 25. OCS4 Board Front Panel ..................................... 48

Figure 26. Functional Block Diagram of OL16x1 Board ........... 50

Figure 27. Front Panel of OL16x1 Board............................... 51



Figure 28. Position of OL16x1 Board in Subrack .................... 52

Figure 29. Functional Block Diagram of OL1/4x4 Board .......... 53

Figure 30. Front Panel of OL1/4x4 Board ............................. 54

Figure 31. Positions of OL1/4x4 Board in ZXMP S325 Subrack. 55

Figure 32. Positions of Boards in the OL1/4 Subsystem.......... 58

Figure 33. Functional Block Diagram of LP1x1/LP1x2/LP4x1/LP4x2 Boards ...................................... 59

Figure 34. LP1x1/LP1x2/LP4x1/LP4x2 Board Front Panel ........ 60

Figure 35. OIS1x2 Board Interfaces .................................... 62

Figure 36. ESS1x2 Board Interfaces .................................... 64

Figure 37. Configuration Example of OL1/4 Subsystem .......... 65

Figure 38. Connection Relations among OA Board and Other Boards............................................................................ 66

Figure 39. Functional Block Diagram of OA Board.................. 67

Figure 40. Front Panel of OBA Board ................................... 68

Figure 41. Available Slots of OA Board................................. 69

Figure 42. Positions of EP1 Subsystem Boards ...................... 71

Figure 43. Functional Block Diagram of EPE1x21/EPT1x21/EPE1B Boards............................................................................ 72

Figure 44. Front Panel of EPE1x21/EPT1x21/EPE1B Board ...... 73

Figure 45. ESE1x21 Board Interface.................................... 76

Figure 46. Configuration Example of EP1 Subsystem ............. 78

Figure 47. EP3 Subsystem Board Positions ........................... 79

Figure 48. Functional Block Diagram of EP3x3 Board ............. 81

Figure 49. Front Panel of EP3x3 Board................................. 82

Figure 50. ESE3x3 Board Interfaces .................................... 83

Figure 51. Configuration Example of EP3 Subsystem ............. 85

Figure 52. EOS Subsystem Board Positions .......................... 87

Figure 53. Functional Block Diagram of SFEx6 Board ............. 88

Figure 54. SFEx6 Board Front Panel .................................... 90

Figure 55. Interfaces of EIFEx4 Board ................................. 91

Figure 56. Interfaces of OIS1x4 Board................................. 94

Figure 57. Configuration Example of EOS Subsystem............. 95

Figure 58. ATM Subsystem Boards Positions ......................... 96

Figure 59. Functional Block Diagram of AP1x4 Board ............. 97

Figure 60. AP1x4 Board Front Panel .................................... 99

Figure 61. Configuration Example of ATM Subsystem........... 100

Appendix B - Abbreviations


Figure 62. RPR Subsystem Board Positions......................... 101

Figure 63. Functional Block Diagram of RSEB Board............. 103

Figure 64. Front Panel of RSEB Board ................................ 104

Figure 65. Configuration Example of RPR Subsystem ........... 105

Figure 66. PWR Board Positions in the Subrack ................... 106

Figure 67. PWR Board Front Panel..................................... 107

Figure 68. Relationship between the Board’s Span Ports and the Ring Network................................................................. 110





Tables

Table 1. Chapter Summary ...................................................i

Table 2. Typographical Conventions ...................................... ii

Table 3. Mouse Operation Conventions ................................. iii

Table 4. Cabinet Dimensions and Weights ..............................5

Table 5. ZXMP S325 Basic Fitting Descriptions ........................8

Table 6. Configuration of ZXMP S325 in a Single Cabinet........ 10

Table 7. Dimensions and Weights of ZXMP S325 Structural Parts..................................................................................... 11

Table 8. Brief Descriptions of Different Subrack Parts............. 15

Table 9. Signal Definitions of DB9 (Female) Socket................ 20

Table 10. Units and Subsystems of ZXMP S325..................... 23

Table 11. ZXMP S325 Boards ............................................. 24

Table 12. Description of NCP Board Functional Blocks ............ 33

Table 13. Indicators on NCP Board Front Panel ..................... 35

Table 14. Interfaces and Buttons on NCP Board Front Panel.... 35

Table 15. Description of SAI Board Functional Blocks ............. 36

Table 16. Descriptions of SAI Board Interfaces ..................... 38

Table 17. Description of OCS16 Board Functional Blocks ........ 42

Table 18. Indicators on OCS16 Board Front Panel.................. 44

Table 19. Description of OCS4 Board Functional Blocks .......... 47

Table 20. Indicators on OCS4 Board Front Panel ................... 49

Table 21. Functional Blocks of OL16x1 Board........................ 50

Table 22. Functional Blocks of OL1/4x4 Board....................... 53

Table 23. Descriptions of OL1/4x4 Board Positions in ZXMP S325 Subrack .......................................................................... 55

Table 24. Board Combinations in OL1/4 Subsystem............... 57

Table 25. Available Slots for Boards in the OL1/4 Subsystem .. 58

Table 26. Description of LP1x1/LP1x2/LP4x1/LP4x2 Board Functional Blocks.............................................................. 60



Table 27. Indicators on the LP1x1/LP1x2/LP4x1 Board Front Panel .............................................................................. 61

Table 28. Description of OA Board Functional Blocks.............. 67

Table 29. Combinations of Boards in EP1 Subsystem ............. 70

Table 30. Description of EPE1x21/EPT1x21/EPE1B Board Functional Blocks.............................................................. 72

Table 31. Indicators on the EPE1x21/EPT1x21/EPE1B Board Front Panel...................................................................... 74

Table 32. Pin Signal Definitions of ESE1x21 Board Electrical Interface......................................................................... 76

Table 33. Combination of Boards in EP3 Subsystem............... 79

Table 34. Functional Blocks of EP3x3 Board.......................... 81

Table 35. Indicators on EP3x3 Board Front Panel .................. 82

Table 36. Combinations of Boards in EOS Subsystem............. 86

Table 37. Description of SFEx6 Board Functional Blocks ......... 89

Table 38. Indicators on the SFEx6 Board Front Panel ............. 90

Table 39. Description of AP1x4 Board Functional Blocks ......... 98

Table 40. Indicators on the AP1x4 Board Front Panel ............. 99

Table 41. Combinations of RPR Subsystem Boards .............. 101

Table 42. Functional Blocks of RSEB Board......................... 103

Table 43. Switch, Screw, and Handle on the PWR Board Front Panel ............................................................................ 107

Documents

ZXMP S325(V2.00) Hardware Manual