Zte Unitrans ZXMP M600 Technical Instructions

ZXMP M600 (V1.0)

Metro CWDM Equipment

Technical Manual

ZTE CORPORATION

ZXMP M600 (V1.0)

Technical Manual

Manual Version 20050425-R1.0
Product Version V1.0

Copyright © ZTE Corporation

All rights reserved.

No part of this documentation may be excerpted, reproduced, translated, annotated or

duplicated, in any form or by any means without the prior written permission of ZTE

Corporation.

ZTE CORPORATION

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Preface

About This Manual

This manual is applicable to Unitrans ZXMP M600 (V1.0) Metro CWDM Equipment

(ZXMP M600 for short).

The ZXMP M600 is a wavelength division equipment belonging to the metropolitan

area optical network product series developed by ZTE. This equipment is capable of

transparently transmitting signals at various rates and services. It features high optical

transmission capacity and fully satisfies users’ requirements on networking and

management. Therefore, this equipment is applicable to various layers in

small-/medium-sized Metropolitan Area Network (MAN), the convergence layer and

access layer of a large-sized MAN.

The equipment has four accompanying manual, including:

Unitrans ZXMP M600 (V1.0) Metro CWDM Equipment Technical Manual

Unitrans ZXMP M600 (V1.0) Metro CWDM Equipment Hardware Manual

Unitrans ZXMP M600 (V1.0) Metro CWDM Equipment Installation Manual

Unitrans ZXMP M600 (V1.0) Metro CWDM Equipment Maintenance Manual

How to Use This Manual

Unitrans ZXMP M600 (V1.0) Metro CWDM Equipment Technical Manual deals

with the architecture, technical indices, system functions, configuration and networking

of the ZXMP M600. It enables users to get a comprehensive understanding of the

ZXMP M600 and serves as a basis for the users to read other relevant documents.

Chapter 1 System Overview briefs the background, applicable standards, system

structure and features of the ZXMP M600.

Chapter 2 Technical Indices describes various technical indices of the ZXMP-M600

in detail.

Conventions

Chapter 3 System Functions deals with the functions of the ZXMP M600 and their

implementation, including the transmission function, Service multiplexing function and

protection function.

Chapter 4 System Configurations and Networking Modes introduces the

networking modes supported by the ZXMP M600, the system configuration

requirements and networking examples. It enables the users to understand the

networking capability and service providing capability of the equipment.

Appendix A Explanation of Terms provides a brief explanation to some terms

adopted to facilitate understanding the manual.

Appendix B Abbreviations summarizes the English abbreviations and terms in the

manual for readers’ reference.

1. Notational convention

Angular brackets “<and>” identify names of keys and buttons, and the

information typed by an operator from a terminal

Square brackets “[and]” indicate a man-machine interface, menu item, data list

or field name. The symbol “→” separates a multi-level menu, e.g., [File→

New→ Folder] indicates the [Folder] menu item under the [New] submenu of

the menu [File].

2. Keyboard Operation Convention

Format Description

Characters within

angular brackets

<Key 1+Key 2> Press Key 1 and Key 2 at the same time.

<Key 1, Key 2> Press Key1 first. Then release Key 1 and press Key 2

Indicate a key or button name, e.g., <Enter>, <Tab>, <Backspace>, and

<a>

3. Mouse Operation Convention

Format Description

Click

Double-click

Right-click

Drag Refers to pressing and holding a mouse button and move the mouse

Refers to clicking the primary mouse button (usually the left mouse

button) once

Refers to quickly clicking the primary mouse button (usually the left

mouse button) twice

Refers to clicking the secondary mouse button (usually the right mouse

button) once.

4. Danger, Warning, Caution and Note Statements

Danger, Warning, Caution and Note statements are

used throughout this manual to emphasize important and critical information. You must

read these statements to help ensure safety and to prevent product damage. The

statements are defined below.

Danger:

Indicates an imminently hazardous situation which, if not avoided, will result in death

or serious injury. This signal word is to be limited to the most extreme situations.

Warning:

Indicates a potentially hazardous situation that, if not avoided, could result in death or

serious injury.

Caution:

Indicates a potentially hazardous situation that, if not avoided, could result in minor or

moderate injury. It may also be used to alert against unsafe practices.

Note:

A Note statement is used to notify people of installation, operation, or maintenance

information that is important, but not hazard-related.



 Tips:



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

Statement: The actual product may differ from what is described in this

manual due to frequent update of ZTE products and fast development of

technologies. Please contact the local ZTE office for the latest updating

information of the product.

Contents

1 System Overview.....................................................................................................................................1-1

1.1 System Background .......................................................................................................................1-1

1.1.1 MAN ...................................................................................................................................1-1

1.1.2 Wavelength Division Multiplexing Technique....................................................................1-4

1.2 System Structure ............................................................................................................................ 1-6

1.2.1 Structure of Hardware System ............................................................................................1-6

1.2.2 Structure of Network Management Software System......................................................... 1-9

1.3 System Features ...........................................................................................................................1-12

1.4 Applicable Standards/Recommendations.....................................................................................1-14

2 Technical Indices .....................................................................................................................................2-1

2.1 System Indices ...............................................................................................................................2-1

2.2 Structure Indices.............................................................................................................................2-2

2.3 Power Indices................................................................................................................................. 2-3

2.3.1 Voltage Requirements .........................................................................................................2-3

2.3.2 Power Consumption Requirements.....................................................................................2-3

2.4 Environment Requirements............................................................................................................ 2-4

2.4.1 Grounding Requirements.................................................................................................... 2-4

2.4.2 Temperature and Humidity Requirements...........................................................................2-4

2.4.3 Cleanness Requirements .....................................................................................................2-5

2.4.4 Dustproof and Anti-corrosion Requirements ......................................................................2-5

2.5 Working Wavelengths ....................................................................................................................2-5

2.6 Reliability.......................................................................................................................................2-6

-i-

2.7 Optical safety and electrical safety ................................................................................................ 2-6

2.8 Indices of System Component Parts .............................................................................................. 2-7

2.8.1 Performance Indices of OMD............................................................................................. 2-7

2.8.2 Performance Indices of OAD Units.................................................................................... 2-8

2.8.3 OTU Interface Indices ...................................................................................................... 2-10

2.8.4 Performance Indices of Optical Supervisor Channel........................................................ 2-13

2.8.5 SRM42 Interface Indices .................................................................................................. 2-13

3 System Function...................................................................................................................................... 3-1

3.1 Line Transmission Function .......................................................................................................... 3-1

3.2 Service Functions........................................................................................................................... 3-2

3.2.1 Service Access Function..................................................................................................... 3-2

3.2.2 Service Convergence Function ........................................................................................... 3-2

3.3 Communication and Monitoring Functions................................................................................... 3-3

3.3.1 Communication between EMS and Access Point............................................................... 3-3

3.3.2 Communication between Nodes ......................................................................................... 3-5

3.3.3 Intra-node Communication and Monitoring ....................................................................... 3-6

3.4 Power Input and Output Functions ................................................................................................ 3-7

3.5 Grounding Function....................................................................................................................... 3-7

3.6 Alarm Output Function.................................................................................................................. 3-7

3.7 Protection Function........................................................................................................................ 3-8

3.7.1 Ring Network Protection .................................................................................................... 3-8

4 System Configurations and Networking Modes................................................................................... 4-1

4.1 System Configuration.................................................................................................................... 4-1

4.1.1 Board Slot Resources.......................................................................................................... 4-1

4.1.2 Metro Optical Terminal Equipment (OTM)........................................................................ 4-2

-ii-

4.1.3 Metro OADM Equipment (OADM) ...................................................................................4-2

4.2 Networking Mode .......................................................................................................................... 4-2

4.2.1 Point-to-point Networking ..................................................................................................4-2

4.2.2 Chain Networking...............................................................................................................4-2

4.2.3 Ring Networking.................................................................................................................4-2

4.2.4 Ring-to-chain Networking ..................................................................................................4-2

4.3 Configuration Example..................................................................................................................4-2

4.3.1 Configuration Implementation ............................................................................................ 4-2

4.3.2 Application Features............................................................................................................4-2

Appendix A Term Description..................................................................................................................A-2

Appendix B Abbreviations ....................................................................................................................... B-2

-iii-

List of Figures

Fig. 1.1-1 Basic Structure of MAN...................................................................................................1-3

Fig. 1.2-1 Functional Structure of the ZXMP M600 Equipment ......................................................1-6

Fig. 1.2-2 Functional Structure of OTM Equipment.........................................................................1-8

Fig. 1.2-3 Functional Structure of OADM Equipment .....................................................................1-8

Fig. 1.2-4 Structure of the Network Management Software System.................................................1-9

Fig. 2.8-1 Optical Interfaces of OMD Units .....................................................................................2-7

Fig. 2.8-2 Optical Interfaces of OAD Units......................................................................................2-8

Fig. 3.3-1 Connection between the Access Point and the EMS (through an Ethernet interface)...... 3-3

Fig. 3.3-2 Connection with the EMS Through SDH Equipment ......................................................3-4

Fig. 3.3-3 Connection with the EMS through RS232 .......................................................................3-5

Fig. 3.3-4 Intra-node Communication and Monitoring Channel.......................................................3-6

Fig. 3.7-1 1+1 Protection of Optical Channel on a Ring Network.................................................... 3-8

Fig. 4.1-1 Slot Distribution in the CWU Shelf..................................................................................4-1

Fig. 4.1-2 Slot Distribution in the SMU Shelf ..................................................................................4-2

Fig. 4.1-3 Board Configuration of OTM Equipment (which adds/drops 8 wavelengths).................4-2

Fig. 4.1-4 Fiber Connection of OTM Equipment (1310nm monitoring channel)............................. 4-2

Fig. 4.1-5 Board Configuration of OADM Equipment (which adds/drops 3 wavelengths)..............4-2

Fig. 4.1-6 Fiber Connections of OADM (which adds/drops 3 wavelengths)....................................4-2

Fig. 4.2-1 Application of Point-to-point Networking........................................................................4-2

Fig. 4.2-2 Application of Chain Networking ....................................................................................4-2

Fig. 4.2-3 Application of Ring Networking ...................................................................................... 4-2

Fig. 4.2-4 Application of Ring-to-chain Networking........................................................................4-2

-i-

Fig. 4.3-1 Networking in a Typical Configuration Example ............................................................ 4-2

Fig. 4.3-2 Service Requirements....................................................................................................... 4-2

Fig. A.9-1 Optical Transmission Over Interface Made of Uneven Media....................................... A-2

Fig. A.9-2 Optical Dispersion Over a Fiber..................................................................................... A-2

-ii-

List of Tables

Table 2.2-1 Outline Dimensions and Weight Indices of the ZXMP M600 Component Parts...........2-2

Table 2.3-1 Power Consumption Indices of the ZXMP M600 Boards/Units....................................2-3

Table 2.4-1 Temperature and Humidity Requirements .....................................................................2-5

Table 2.5-1 Wavelength Distribution of the ZXMP M600 Equipment (with ordinary fibers adopted)

.............................................................................................................................................................2-6

Table 2.8-1 Performance Indices of OMD........................................................................................ 2-8

Table 2.8-2 Performance Indices of OAD Units ............................................................................... 2-9

Table 2.8-3 Indices of the Line End Optical Transmitting Port ......................................................2-10

Table 2.8-4 Indices of the Line End Optical Receiving Port...........................................................2-11

Table 2.8-5 Indices of Client Optical Transceiving Module ...........................................................2-12

Table 2.8-6 Major Performance Indices of Optical Monitoring Channel........................................2-13

Table 2.8-7 Indices of Client Optical Transceiving Module ...........................................................2-14

Table 4.1-1 Relation between the Boards and Slots in the CWU Shelf ............................................4-1

Table 4.1-2 Relation between the Boards and Slots in the SMU Shelf.............................................4-2

Table 4.3-1 Equipment Configuration...............................................................................................4-2

-i-

1 System Overview

This chapter introduces the background, architecture, system features and applicable

standards/recommendations. It aims at laying a basis for readers to understand the

equipment.

1.1 System Background

The ZXMP M600 is the metro CDWM system developed by ZTE. It features large

optical transmission capacity and can implement transparent transmission of various

services at multiple rates. It can be applied to the convergence and access layers of

large MANs as well as various layers of middle- and small-sized MANs.

In the following, the Metropolitan Area Network (MAN) and Wavelength Division

Multiplexing (WDM) will be introduced briefly.

1.1.1 MAN

1.1.1.1 Concept

As data services such as IP and Ethernet services develop rapidly in recent years, a data

network that can provide wide coverage, high-speed bandwidth and convenient

services is required for providing services such as Internet access, IP-based virtual

private network, IP phone, multimedia application and e-commerce. Meanwhile, as a

metropolis features prosperous economy, dense population, compact coverage area and

frequent information exchange, the information-oriented construction keeps developing

rapidly. Thus, the requirements on MAN also becomes higher and higher.

Generally a MAN is considered as a broadband network that has a unified protocol and

connects government departments, educational and scientific institutions, companies

and home users. It provides data services as well as integrated multimedia services

such as packet voice, graphic and video services, and covers local public networks in

metropolitan and suburb areas.

Based on the statistics and packet technology, the MAN boasts of a clear network

structure, perfect expandability and high reliability. The products and technologies

1-1

ZXMP M600 (V1.0) Technical Manual

adopted in it are widely used for commercial purposes, while the user and service

management is flexibly and convenient. The MAN features broadband capacity and

rate, efficient transmission of information and diversified access methods. It obtains the

contents locally, offers user-defined access, provides characteristic services and can

deploy new services quickly. In addition, its capacity can be expanded flexibly and its

upgrade and development can be predicted.

1.1.1.2 Basic Structure

The MAN can either be divided vertically or horizontally:

1. Vertical division

The MAN can be vertically divided into the access layer, convergence layer and

core layer.

The access layer accesses different types of subscribers such as routers and LAN.

The convergence layer converges sporadic access points, implements data

multiplexing, transmitting and switching, and provides traffic control and user

management functions. It includes Multi-Service Transmit Platform (MSTP) and

Metro OADM. The core layer implements high-speed information exchange on

the whole network as well as interconnection between backbone networks. It

generally consists of OADM equipment.

1-2

Chapter 1 System Overview

Fig. 1.1-1 shows the basic structure of a MAN.

Backbone layer

MOADMMOADM

Core layer

MOADM

Convergence

layer

MSTP

MSTP

Access layer

Router

MSTP: multi-service transmit platform OADM: metro OADM

Fig. 1.1-1 Basic Structure of MAN

LAN

MSTP

ATM

2. Horizontal division

A MAN can also be horizontally divided into the service layer and transmission

layer.

The service layer can implement multiple services such as narrowband voice

service, Internet service, remote calculation and transaction processing,

e-commerce, video conference, multimedia integrated information service,

remote communication and control through computer and leased line service. It

consists of various ATM and IP devices. The transmission layer indicates the

metro optical network that carries the services at the service layer. It provides an

efficient and a unified transmission platform that features large capacity and low

cost and consists of WDM and SDH devices.

Service and

management

center

1-3

ZXMP M600 (V1.0) Technical Manual

1.1.1.3 Features of Metro Optical Network

1. Large service access capacity

The rapid development of MAN service causes the acute increase in the demand

for bandwidth. This demand can only be met by large-capacity metro optical

network. Thus, the core layer of the metro optical network should have large

service access capacity and should be capable of continuous upgrading.

2. Multi-service convergence and transparent transmission

To make full use of the existing network resources, the core layer should be able

to converge various low-rate services and encapsulate services of different rates

and with different protocols into a single wavelength. This helps save the

wavelength resources and economize network construction. On the other hand,

to avoid extra overhead due to protocol conversion and frame format matching

and to make full use of the bandwidth resources, the core layer is also required

to transmit the carried services in the original mode.

3. High reliability and powerful network protection capability

The network security and reliability guarantee normal service transmission.

Thus, redundancy protection measures should be provided for the hardware on

the equipment. Besides, channel protection and multiplex section protection

should also be provided at various levels on the network.

4. Low networking cost

1.1.2 Wavelength Division Multiplexing Technique

As MAN services become increasingly abundant, the requirement on the MAN

capacity becomes higher and higher. As a result, the multi-service broadband MAN

gradually becomes a hotspot in the telecom and network construction. To use the

existent optical fiber resources to increase the bandwidth capacity, the Wavelength

Division Multiplexing (WDM) technique is adopted in the MAN.

WDM can be divided into Dense Wavelength Division Multiplexing (DWDM)

technique and Coarse Wavelength Division Multiplexing technique.

1.1.2.1 DWDM Technique

The DWDM technique adopts an Erbium Doped Fiber Amplifier (EDFA), a high

wavelength stability laser and dense wavelength division multiplexing/ demultiplexing

1-4

Chapter 1 System Overview

equipment to transmit optical signal service and implement balanced management of

optical power on the whole line. In the DWDM system, the selection of wavelength

and the frequency intervals should conform to ITU-T Recommendation G.692.

The working wavelength range of the DWDM system is 1528.77nm~1560.61nm and

the corresponding working frequency range is 196.1THz~192.1THz.

The channel interval of the system is a multiple of 100GHz (about 0.8nm). The smaller

the channel interval is, the higher the resolution of the optical demultiplexer should be.

The channel interval commonly used at present is either 200GHz (about 1.6nm) or

100GHz (about 0.8nm).

While saving the cost of the electrical relay, EDFA technique adopted in the DWDM

equipment presents much higher requirements on the wavelength stability, dispersion

tolerance and chirp performance of the laser.

Therefore, if the DWDM equipment that suitable for long distance transmission is used

in a MAN that features short transmission distance and diversified service interfaces,

the network construction cost will greatly increase.

1.1.2.2 CWDM Technique

The CWDM technique is developed to improve the utility of optical fibers on the MAN,

to provide multiple service interfaces and to cut the network construction cost at the

same time.

The working principle of CWDM is similar to that of DWDM. At the transmitting end

of the link, an optical multiplexer is used to multiplex the wavelengths transmitted in

different fibers into one fiber for transmission, while at the receiving end, a

demultiplexer is used to recover the original wavelengths from the combined

wavelength.

The wavelength selection and channel interval of the CWDM conforms to ITU-T

Recommendation G694.2. The wavelength interval is 20 nm, while the working

wavelength range is determined by the adopted fiber type. If an ordinary fiber type

G.652 A&B is adopted, then the working wavelength range is 1470nm~1610 nm; if

full-wave fibers, that is, G.652 C&D fibers are adopted, then the working wavelength

range is 1270 nm~1610 nm.

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ZXMP M600 (V1.0) Technical Manual

The CWDM system adopts uncooled laser and multiplexer/demultiplexer. Compared to

DWDM, it boasts shorter transmission distance and lower cost and is suitable for the

construction of MAN.

1.2 System Structure

The structure of the ZXMP M600 equipment is shown in Fig. 1.2-1.

Fig. 1.2-1 Functional Structure of the ZXMP M600 Equipment

The ZXMP M600 equipment can be divided into the hardware system and network

management software system. The two systems are independent of each other but will

also work together.

1.2.1 Structure of Hardware System

1.2.1.1 Platform Functions

The hardware system of the ZXMP M600 includes an optical transfer platform, service

convergence system, multiplexing/demultiplexing platform, monitor platform and

power supply platform.

1. Optical transfer platform

It adopts the optical/ electrical/ optical conversion mode to implement

wavelength conversion of service signals and line signals.

The service signals include multi-service signals with a rate lower than 2.5Gbit/s

and with the maximum rate being 2.5Gbit/s.

1-6

Chapter 1 System Overview

The line signals meet the requirements specified in ITU-T recommendation

G.694.2.

2. Service convergence platform

It converges multiple channels of low rate signals into one wavelength for

transmission and implements the reserve process.

The low rate signals include standard STM-1, STM-4 signals with the maximum

rate being 2.5Gbit/s on the line.

3. Multiplexing/demultiplexing platform

It includes a multiplexing part and a demultiplexing part.

1) Multiplexing part: It couples multiple channels of optical signals with different

wavelengths from the optical transfer platform and service convergence platform

to a piece of optical fiber for transmission.

2) Demultiplexing part: It divides the multiplexing optical signals from the line

side according to their different wavelengths and sends them to different optical

transfer platform and service convergence platform.

4. Monitor platform

1) Collecting, processing and reporting the configuration, alarm and performance

information of the various platforms

2) Receiving the command from the EMS and transferring it to the destination

board

3) Using a specified monitoring optical channel to transparently transmit the

network management information. The wavelength of the monitoring channel

can be either 1310nm or 1510nm.

5. Power supply platform

It converts in DC input into +5V or -48V DC power to provide power for

various platforms.

Options –48V, +24V and –60V are available for DC power supply, and 1+1

warm backup are practicable.

1-7