73469563-OptiX-155622H-Metro1000-STM-1STM-4-MSTP-Sys

HUAWEI®

OptiX 155/622H(Metro1000)

STM-1/STM-4 MSTP Optical Transmission System

System Description

V2.00R002


STM-1/STM-4 MSTP Optical Transmission System

System Description

Manual Version T2-040000-20010630-C-V2.22

Product Version V2.00R002

Copyright © 2001 by Huawei Technologies Co., Ltd.

All Rights Reserved

No part of this document may be reproduced or transmitted in any form or by any

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Notice

The information in this document is subject to change without notice. Although

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OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP Optical Transmission System

System Description

OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP optical transmission system developed by Huawei Technologies Co., Ltd.


System Description

Issue 2.22 June 2001 i

About This Document

1 Purpose of This Document

OptiX 155/622H (Metro1000) STM-1/STM-4 MSTP Optical Transmission System System Description describes briefly the characteristics, applications, structure and technical specifications of OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP optical transmission system( hereafter referred to as OptiX 155/622H(Metro1000)).

About This Document OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP

Optical Transmission System System Description

ii Issue 2.22 June 2001

2 Intended Audiences

The readership of OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP Optical Transmission System System Description is those who want to have a general command of OptiX 155/622H(Metro1000) in terms of characteristics, applications, structure and technical specifications.

About This Document OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP


Issue 2.22 June 2001 iii

3 Brief Introduction

The contents of OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP Optical Transmission System System Description are arranged in the following order:

n Introduction

A brief introduction to the transmission network and solutions of Huawei Technologies Co., Ltd. With its complete line of products, coupled with a focus on the application of OptiX 155/622H(Metro1000) in the network.

n Features of OptiX 155/622H(Metro1000)

This part briefly covers the OptiX series optical transmission products of Huawei Technologies Co., Ltd. and highlights a few outstanding features of OptiX 155/622H(Metro1000).

n Networking application of OptiX 155/622H(Metro1000).

The application of OptiX 155/622H(Metro1000) on networking is introduced in detail.

n OptiX 155/622H(Metro1000) system structure

Firstly the structure of OptiX 155/622H(Metro1000) is introduced according to the classification of functional modules of the product, followed by a hierarchical introduction to the hardware and software structures of OptiX 155/622H(Metro1000).

n OptiX 155/622H(Metro1000) reliability design

An introduction to the network-level service protection of OptiX 155/622H(Metro1000).

n Operation, administration and maintenance of OptiX 155/622H(Metro1000)

OptiX 155/622H(Metro1000) is described in terms of equipment operation, administration and maintenance.

n OptiX 155/622H(Metro1000) technical specifications

This chapter consolidates all technical parameters and specifications of OptiX 155/622H(Metro1000).

n Appendix: Abbreviations

The appendix lists all abbreviations used in the system description with their full-length forms for a better understanding.


System Description

Issue 2.22 June 2001 i

Contents

1 Introduction

1.1 Overview of OptiX 155/622H(Metro1000) 1

1.2 Network Application of OptiX 155/622H(Metro1000) 2

2 Features of OptiX 155/622H(Metro1000)

2.1 OptiX Series Optical Transmission Products 4

2.2 Functions and Features of OptiX 155/622H(Metro1000) 6

2.2.1 Interface 6 2.2.2 Functions 6

2.2.3 Performance 7

2.2.4 Traverse Compatibility 7

3 Networking Application of OptiX 155/622H(Metro1000)

3.1 Networking Application of OptiX 155/622H(Metro1000) 8

4 OptiX 155/622H(Metro1000) System Structure

4.1 OptiX 155/622H(Metro1000) Functional Modules 11

4.1.1 Interface Board 12 4.1.2 Cross-Connect Unit 14

4.1.3 System Control and Communication Unit 14

4.1.4 Synchronous Timing Unit 14

4.1.5 Overhead Processing Unit 14

4.2 OptiX 155/622H(Metro1000) Hardware Structure 15

4.2.1 Rack 15

4.2.2 Board 15

4.3 OptiX 155/622H(Metro1000) Software Structure 17

4.3.1 Board Software 17


System Description

ii Issue 2.22 June 2001

Contents

4.3.2 Host Software 18 4.3.3 Network Management System 19

5 OptiX 155/622H(Metro1000) Reliability Design

5.1 Network Protection of OptiX 155/622H(Metro1000) 20

5.1.1 Ring Network Protection 21

5.1.2 Subnetwork Connection Protection 24

5.1.3 VP-Ring Protection 24

5.1.4 Hierarchical Protection 25

6 Operation, Administration and Maintenance of OptiX 155/622H(Metro1000)

6.1 Operation and Maintenance 26

6.2 OptiX iManager NM System 28

7 OptiX 155/622H(Metro1000) Technical Specifications

7.1 Features of OptiX 155/622H(Metro1000) Equipment 29

7.1.1 Multiplex Structure 29

7.1.2 Interface Type 30

7.1.3 Applications 32

7.1.4 Cross-Connect 32

7.1.5 Power Supply and Power Consumption 32 7.1.6 Mechanical Structure 33

7.1.7 Electromagnetic Compatibility 33

7.1.8 Environmental Conditions 34

7.2 Main Indexes of OptiX 155/622H(Metro1000) 35

7.2.1 Optical Interface Indexes 35


System Description

Issue 2.22 June 2001 iii

Contents

7.2.2 Specifications of the Electrical Interface Performance 40

7.2.3 Timing and Synchronization Indexes 42

7.2.4 Jitter Performance Indexes 43

7.2.5 Electromagnetic Compatibility (EMC) 46

A Terms and Abbreviations


System Description

Issue 2.22 June 2001 1

Introduction

1.1 Overview of OptiX 155/622H(Metro1000)

Developed with MADM/MSTP design philosophy, new-generation OptiX series product of Huawei Technologies Co., Ltd. covers the SDH optical transmission equipment of STM-1, STM-4, STM-16, STM-64 levels. Huawei Technologies Co., Ltd. can provide not only the integrated terminal network transmission equipment OptiX 155/622H(Metro1000), but also the general transmission equipment OptiX 155/622, OptiX 2500+ (Metro3000), OptiX Metro 3100 and OptiX 10G for complex local network and backbone network. Furthermore, Huawei Technologies Co., Ltd. can also provide the DWDM equipment OptiX BWS 320G for backbone networks and OptiX Metro 6100 for MAN.

OptiX 155/622H(Metro1000) of Huawei Technologies Co., Ltd. is an STM-1/STM -4 compatible equipment of a new generation, providing the synchronous optical transmission capacity of STM -1 and STM-4. It can be upgraded from STM-1 to STM-4 online. OptiX 155/622H(Metro1000) provides abundant service interfaces to access services such as PDH signal, ATM/Ethernet services. The product also supports hybrid transmission of PDH signal and ATM, Ethernet services within the same equipment.

Via SDH interface, OptiX 155/622H(Metro1000) equipment can form the transmission network with such SDH transmission equipment as OptiX 155/622H(Metro1000), OptiX 2500+ (Metro3000) and OptiX 10G. In addition, via PDH or ATM/Ethernet interface, it may also form the communications network with the access network equipment, GSM mobile cell base station, ETS wireless access base station, switch and router.

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Introduction OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP


2 Issue 2.22 June 2001

1.2 Network Application of OptiX 155/622H(Metro1000)

OptiX 155/622H(Metro1000) features a flexible cross-connect function. It is an integrated terminal network transmission equipment in a comprehensive system solution of the contemporary communications network. The role of OptiX 155/622H (Metro1000) in the entire transmission network is shown in Figure 1.

Introduction OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP



OptiX BWS 320G

32λ32λ

32λ

32λ

32λ

Backbone Network

OptiX155/622

STM-16

STM-4

STM-1

OptiX 2500+(Metro3000)

OptiX155/622

OptiX155/622OptiX155/622

OptiX155/622

OptiX 155/622H (Metro1000)

OptiX BWS 320G

OptiX BWS 320GOptiX BWS 320G

OptiX BWS 320G

OptiX BWS 320G

OptiX BWS 320G

OptiX BWS 320G

OptiX 2500+ (Metro3000)

OptiX 2500+(Metro3000)OptiX 2500+(Metro3000)

OptiX 2500+(Metro3000)





Trunk Network

Local Network

Access Network

123

123

123

123

Figure 1 The role of OptiX 155/622H(Metro1000) in the network wide solution


System Description


Features of OptiX 155/622H(Metro1000)

Huawei Technologies Co., Ltd. has been active for years in various activities of the international standardization organizations and technical forums, taking the pulse of the latest development of ITU-T recommendations and other standards. All products developed by Huawei Technologies Co., Ltd., a member of ITU-T, are in compliance with the ITU -T recommendations.

2.1 OptiX Series Optical Transmission Products

The OptiX series optical transmission products are shown in Table 1.

2

Features of OptiX 155/622H(Metro1000) OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP



Table 1 List of OptiX series optical transmission product

Product Types Description of Product

OptiX 155/622H(Metro1000) Integrated STM-1/STM-4 compatible optical transmission system

OptiX 155/622 STM-1/STM-4 compatible optical transmission system

OptiX 2500+ (Metro3000) STM-16 MADM optical transmission system

OptiX Metro 3100 STM-16 Multi-Service Transmission Platform

OptiX 10G STM-64 MADM optical transmission system

OptiX Metro 6100 16/32 Channel DWDM Multi-Service Transmission Platform

OptiX BWS 320G 320G backbone DWDM optical transmission system

OptiX iManager T2000 Subnetwork level integrated NM system of Huawei Technologies Co., Ltd. transport network




2.2 Functions and Features of OptiX 155/622H(Metro1000)

OptiX 155/622H(Metro1000) extensively utilizes OptiX series ASIC developed by Huawei Technologies Co., Ltd. The proprietary ASIC chips of Huawei Technologies Co., Ltd. have high capacity, powerful functions while small-sized. OptiX 155/622H(Metro1000), with perfect performance, is highly integrated, powerful and cost-effective.

2.2.1 Interface

n STM-1/STM-4 optical interface

n E1/T1&E3/T3 PDH interface

n Tone and asynchronous data interface

n Broadband services interface

n Abundant auxiliary interfaces

2.2.2 Functions

n Powerful multi-system support capability

n Expansion capability oriented to network development

n Flexible configuration

n Powerful networking capability

n Perfect protection mechanism

n Network management system of perfect functionality

n Power supply and environment monitoring function

n Perfect SSM management function

n A number of long-distance transmission solutions

n Powerful ECC processing capability




2.2.3 Performance

n Outstanding interface jitter performance

n Outstanding clock synchronization performance

n Outstanding EMC performance

2.2.4 Traverse Compatibility

OptiX 155/622H(Metro1000) is designed fully in compliance with the ITU-T recommendations and IEEE standards. It gives rise to a good traverse compatibility.


System Description


Networking Application of


3.1 Networking Application of OptiX 155/622H(Metro1000)

OptiX 155/622H(Metro1000) can be used to form point -to-point, chain, star, ring and mesh networks. Furthermore, it supports various complex network topologies of multi-ring intersection (including tangent rings) and ring with chain.

The chain network and ring network are two basic structures of the SDH network topologies. A variety of complicated network structures derive from the two basic structures in the actual applications. The following are introductions to a number of common networking topology structures supported by OptiX 155/622H(Metro1000).

n Chain network and its extension star network

Figure 2 shows an ordinary chain network. OptiX 155/622H(Metro1000) can also be used to form a hub network by collecting a number of chains on one point, as shown as Figure 3.

3

Networking Application of OptiX 155/622H(Metro1000) OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP



T M A D M T M

1 1

1 1

1 1

1 1

Figure 2 Chain network

ADM

ADMADM

ADMADM

155M

155M

155M 155M

155M

ADM ADM155M

Figure 3 Star network

n Ring network and its combined networks

Figure 4 shows a basic ring network. The OptiX 155/622H(Metro1000) equipment alone can form the ring network of STM-1/STM -4 rates. It can realize the following ring network self-healing protection as in ITU-T recommendations: private protection ring for two-fiber unidirectional multiplex section, shared protection ring for two-fiber bidirectional multiplex section, two-fiber unidirectional path protection ring, subnetwork connection protection (SNCP).

A D M

A D M

A D MA D M

111

111

111

111

Figure 4 Ring network

Networking Application of OptiX 155/622H(Metro1000) OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP


10 Issue 2.22 June 2001

Currently the most important networking form for broadband data service is STM-4 ring network. Broadband services accessed via respective nodes usually have to be collected to and processed at the central node. VP-Ring protection and MS protection applies to ATM services. The Ethernet service, as it is already encapsulated into VC-12 container, can use various protection modes existing in SDH network such as path protection, multiplex section protection and subnetwork connection protection.

In addition to the above mentioned basic network structures, OptiX 155/622H (Metro1000) also supports the following structures:

n Intersected rings

n Tangent rings

n Ring with chain

n Support hub shape complex networking structures of ring and chain combination, as shown in Figure 5:

ADMT M T M155M

155M

155M

155MADM

ADM

ADM

ADM

Figure 5 star network of ring and chain combination


System Description

Issue 2.22 June 2001 11

OptiX 155/622H(Metro1000) System

Structure

4.1 OptiX 155/622H(Metro1000) Functional Modules

OptiX 155/622H(Metro1000) is designed according to relevant ITU-T recommendations, with the structure shown in Figure 6.

4

OptiX 155/622H(Metro1000) System Structure OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP


12 Issue 2.22 June 2001

16¡ Á16 VC-4 Space Division Cross-Connect Matrix

IU1

IU2

IU3

IU4

IU1

IU2

IU3

IU4

Synchronous Timing Unit

Control andCommunication Unit

Overhead Processing Unit

Figure 6 System function structure of OptiX 155/622H(Metro1000)

4.1.1 Interface Board

1. The SDH interface boards provided by OptiX 155/622H (Metro1000) include STM-4/STM-1 optical interface

n 1/2 STM-1 optical interface board OI2

n 1×STM-4 optical interface board OI4

n 1/2 STM-1 single-fiber bidirectional optical interface board SB2

All the optical interface boards above can be inserted in any of IU1, IU2 or IU3 slots to form single or multiple TM or ADM.

2. The PDH electrical interfaces provided by OptiX 155/622H(Metro1000) are as follows:

n 4/8×2Mbit/s electrical interfaces board SP1

n 8×2Mbit/s&1.5Mbit/s compatible electrical interfaces board SM1

n 1~3×34Mbit/s or 45Mbit/s electrical interfaces board PL3

n 8×2Mbit/s high performance electrical interfaces board HP2



Issue 2.22 June 2001 13

n 48/32/16×2Mbit/s electrical interfaces board PD2

n 48/32/16×2Mbit/s&1.5Mbit/s compatible interfaces board PM2

n 16×2Mbit/s electrical interfaces board SP2

2mmHM connector is used on all electrical interface boards.

3. TDA is the external Tone&Data access board to realize the access of 64kbit/s audio data

The multi-channel Tone&Data access board (TDA) of OptiX 155/622H equipment provides the audio interface comply with the international audio signaling transmission features and the RS -232 and RS -422 interfaces for transparent transmission. These signals are adapted and converted to 2048kbit/s signals through the interfaces and mapped into VC-12 virtual containers.

4. Environment Monitor Unit (EMU) provides functions of environment monitor

n monitor 2 voltage inputs

n monitor the working temperature of the equipment

n switching signal input/output

n serial data interface

EMU is inserted in IU3 slot only. IU3 slot cannot be inserted with other boards, if the OptiX 155/622H(Metro1000) is configured with EMU.

5. AIU is the ATM service access board provided by OptiX 155/622H(Metro1000)

ATM service interface board--AIU provides 2/4×155Mbit/s ATM optical interfaces to access ATM services. The ATM service accessed from local equipment are converged with the ATM service transmitted on optical fiber to the same VC-4 unit, network bandwidth is shared by means of statistics multiplexing. Furthermore, this board can implement VP-Ring protection.

6. ET1 is Ethernet interface board provided by OptiX 155/622H(Metro1000)

ET1 board provides 8×10M/100M compatible Ethernet interfaces. It can convert Ethernet service into VC-12 virtual container, then through cross-connector unit, finally transmit via optical interface board on SDH network. ET1 provides functions such as Ethernet service access, bandwidth management and Ethernet service convergence. ET1 board also supports VLAN function.



14 Issue 2.22 June 2001

4.1.2 Cross-Connect Unit

The 16×16 space division cross-connect matrix is used in the system, with four buses on each slot in slots IU1-IU4, corresponding to the bandwidth requirement of one 622M.

Slots IU1 and IU2 should be selected with priority if multiplex section switching is selected in the system.

4.1.3 System Control and Communication Unit

The SCC unit implements functions such as system initialization, performance monitoring and ECC communication.

4.1.4 Synchronous Timing Unit

The STG unit provides system working clock for respective units.

4.1.5 Overhead Processing Unit

The orderwire unit implements the orderwire telephone and overhead interface (RS-232) processing function.



Issue 2.22 June 2001 15

4.2 OptiX 155/622H(Metro1000)

Hardware Structure

The OptiX 155/622H(Metro1000) synchronous transmission equipment is housed in a chassis. The outer dimensions of the equipment are as follows: 436mm (L) ×293mm (W) ×86mm (H). The equipment is designed in the 19-inch standard, with the chassis height of 2U.

OptiX 155/622H(MetrO1000) can be installed in many ways because of its compact structure: in the integrated rack of OptiX 155/622H-C series, in an assembled rack or on the wall.

4.2.1 Rack

The integrated rack of OptiX 155/622H-C series is a newly released model of Huawei Technologies Co., Ltd. With 19-inch standard installation holes inside, OptiX 155/622H(Metro1000) transmission equipment, DDF(Digital Distribution Frame), ODF(Optical Distribution Frame) and power box may be installed in the rack at the same time, integrating functions of transmission, digital distribution and optical distribution, optimizing cabling solution and saving cables. This installation mode is recommended for OptiX 155/622H(Metro1000) when it is to be installed alone.

Rack size:

1600mm (H) ×600mm (W) ×450mm (D)

2000mm (H) ×600mm (W) ×600mm (D)

2200mm (H) ×600mm (W) ×600mm (D).

2600mm (H) ×600mm (W) ×600mm (D).

4.2.2 Board

Optional boards for OptiX 155/622H(Metro1000)system are shown in Table 2.

Table 2 Board type of OptiX 155/622H(Metro1000)

Board Type The Number and Type of Interface Slot

OI2S 1×STM-1 IU1 IU2 IU3

OI2D 2×STM-1 IU1 IU2 IU3

OI4 1×STM-4 IU1 IU2 IU3

SB2L 1×STM-1 IU1 IU2 IU3



16 Issue 2.22 June 2001

Board Type The Number and Type of Interface Slot

SB2R 1×STM-1 IU1 IU2 IU3

SB2D 2×STM-1 IU1 IU2 IU3

SP1S 4×2Mbit/s IU2 IU3

SP1D 8×2Mbit/s IU2 IU3

SM1S 4×(2Mbit/s or 1.5Mbit/s) IU2 IU3

SM1D 8×(2Mbit/s or 1.5Mbit/s) IU2 IU3

HP2 8×2Mbit/s IU2 IU3

PD2S 16×2Mbit/s IU4

PD2D 32×2Mbit/s IU4

PD2T 48×2Mbit/s IU4

PM1S 16×(2Mbit/s or 1.5Mbit/s) IU4

PM1D 32×(2Mbit/s or 1.5Mbit/s) IU4

PM1T 48×(2Mbit/s or 1.5Mbit/s) IU4

TDA 12×tone+4×RS -232+4×RS -422 IU4

EMU 2×voltage monitor + temperature monitor +12/6×switching signal input/output+1×RS -232/RS -422serial data interface

IU3

SCB 2/4×RS-232, rate19.2kbit/s SCB

AIU ATM service interface

2/4×155Mbit/s ATM interface IU4

ET1 Ethernet service interface

8×10M/100M Ethernet interface IU4



Issue 2.22 June 2001 17

4.3 OptiX 155/622H(Metro1000) Software Structure

The software system of OptiX 155/622H(Metro1000) system is of modular structure. It is composed of three modules: board software, host software and NM system. The three modules reside and run respectively on the functional boards, system control & communication board and the NM computer, performing specific functions. The software structure of OptiX 155/622H(Metro1000) system is shown in Figure 7. In the diagram, all modules are host software except "Network Management System" and "Board Software". The following is the description of functions of the three modules and how the functions are implemented.

Networkmanagement

Communicatiomodule

Equipmenmanagement

Mailboxcommunication

Board

Real-time

multipletask

operatinsystem

DBMSmodule

Figure 7 The software structure of OptiX 155/622H(Metro1000)

4.3.1 Board Software

It directly controls the functional circuits. In the corresponding board, it implements a specific function of the network element (NE) as defined in ITU-T recommendations and the function of default filtering and one second filtering, and it supports the board management from the host software.



18 Issue 2.22 June 2001

4.3.2 Host Software

n Real-time multi-task operating system

The real-time multi-task operating system of the OptiX 155/622H(Metro1000) system host software is responsible for managing public resources and supporting application programs. It isolates the application programs from the processor and provides an application program execution environment, which is independent of the processor hardware.

n Mailbox communication

Mailbox communication is the interface module between host software and board software. According to the corresponding communication protocol, the communication function between host software and board software is implemented for information exchange and equipment maintenance. Via mailbox communication, board maintenance and operation commands from the host software are sent to the boards. On the other hand, the corresponding board state and alarm and performance events are reported to the host software.

n Equipment management module

Equipment management module is the kernel of the host software for implementing NE management. It includes administrator and agent. Administrator can send network management operation commands and receive events. Agent can respond to the network management operation commands sent by the manager, implement operations to the managed object, and send up events according to the state change of the managed object.

n Communication module

The communication module exchanges management information between network management system and NE and as well as among the NEs. It consists of network communication module, serial communication module and ECC communication module.

n Database management module

The database management module is an effective part of the host software. It includes two independent parts: data and program. Organized according to database form, the data consist of network base, alarm base, performance base and equipment base, etc. The program implements management and access to the data in the database.



Issue 2.22 June 2001 19

4.3.3 Network Management System

The network management system exercises a unified management of the optical transmission system and provides maintenance for all SDH, DWDM NEs on the entire network. In compliance with the ITU -T recommendations, it is a network management system integrating standard management information model and object-oriented management technology. It exchanges information with NE software via the communication module to implement monitoring and management over network equipment.


System Description

20 Issue 2.22 June 2001

OptiX 155/622H(Metro1000) Reliability

Design

5.1 Network Protection of OptiX 155/622H(Metro1000)

OptiX 155/622H(Metro1000) enjoys good network self-healing protection and can provide multiple service protections, such as path protection, multiplex section protection and subnetwork connection protection at SDH layer, and can provide VP-Ring protection at ATM layer. In case of any optical fiber cut, line board damage or node failure. The protection switching time is less than 50ms.

The self-healing protection specified in the ITU-T recommendations and supported by the OptiX 155/622H(Metro1000) are as follows:

n Protection mode for self-healing ring network (shared protection ring for two-fiber bidirectional multiplex section and private protection ring for two-fiber unidirectional multiplex section).

n SNCP

n VP-Ring protection.

Described below are mainly the protection modes provided by OptiX 155/622H(Metro1000).

5

OptiX 155/622H(Metro1000) Reliability Design OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP


Issue 2.22 June 2001 21

5.1.1 Ring Network Protection

Ring network is also referred to as self-healing rings. OptiX 155/622H(Metro1000)

equipment can realize multiplex section protection ring and path protection.

n Two-fiber bidirectional MS shared protection rings.

The prominent advantage of two-fiber bidirectional multiplex section protection ring is the improved availability of loop capacity.

See Figure 8 for the arrangement of the working channel and protection channel in the two-fiber bidirectional multiplex section protection rings.

CA AC

CA AC

S1/P2

S1/P2

S2/P1

S2/P1

D

A

C

B

(a)

CA AC

CA AC

S1/P2

S1/P2

S2/P1

S2/P1

D

A

C

B

XSwitching(b)

11 11

11

Figure 8 Two-fiber bidirectional multiplex section shared protection ring

n Two-fiber unidirectional MS private protection ring



22 Issue 2.22 June 2001

In this ring structure, the working channel and the protection channel are in different fibers. The process of the protection switch is shown in figure 9.

P1

CA AC

CA AC

S1

S1

P1

D

A

C

B

(a)

P1

CA AC

CA AC

S1

S1

P1

D

A

C

B

XSwitching

(b)

66

66

Figure 9 Two-fiber unidirectional multiplex section private protection ring

The typical switching time of the multiplex section of OptiX 155/622H(Metro1000) is less than 50ms stipulated in the ITU-T recommendations.

n Two-fiber unidirectional path protection rings

Two-fiber unidirectional path protection ring adapts the protection of 1+1, which is the structure of “ bridge at the beginning, switch at the end”, as shown in Figure 10. One fiber is S fiber, which is for working, and the other fiber is P fiber, which is for standby. The services transmitted in the two fibers are the same, but



Issue 2.22 June 2001 23

in the different directions. At the receiver end, the signal is chosen from the working fiber or the standby fiber according the quality of the signal.

P 1

C A A C

C A A C

S 1

S 1

P 1

DA

C

B

(a)

P 1

C A A C

C A A C

S 1

S 1

Swi tch ing

P 1

DA

C

B

(b)

X

77

77

Figure 10 Two-fiber unidirectional path protection ring



24 Issue 2.22 June 2001

5.1.2 Subnetwork Connection Protection

Facing up to a more and more complicated networking structure, SNCP is the only protection mode which applies to all the topologies and features quick switching speed. OptiX 155/622H(Metro1000) meets the requirements of ITU -T Recommendation G.841 and also in most cases, ensures the switching time of multiple SNCP to be less than 50ms, even if there are multiple SNCP switching at the same time.

5.1.3 VP-Ring Protection

To improve the transmission efficiency in OptiX 155/622H(Metro1000), ATM service is transmitted in shared ring network and the bandwidth availability is enhanced. In the meantime, ATM service can be provided with the VP-Ring based ATM ring network protection in compliance with BELLCORE GR2837 and ITU-T Recommendation I.432. Network survivability is further enhanced.

The protection for ATM service can be provided via SDH layer, by means of shared ring protection. However, SDH layer protection is far from enough. Without ATM layer protection, services on other nodes on the ring may be affected in the case of ATM layer failure. Therefore, ATM service has to be protected on the ATM layer, and at this point the VP-Ring protection is introduced.

AMulti-service transmission MAN

B

C

D

SDHlayer

ATMlayer

155M

155M155M

155M

ATMlayer

ATMlayer

SDHlayer

SDHlayer

ATMlayer

SDHlayer

Figure 11 Implementation of VP-Ring

In Figure 11, ATM is transferred point by point for bandwidth sharing purposes. At each node, the bandwidth (155Mbit/s) where the ATM shared service is located (via cross-connect processing at the SDH layer) is dispatched to the



Issue 2.22 June 2001 25

ATM layer. When the service of upstream nodes are mixed with that of the local node at the ATM layer, it is sent to downstream nodes for bandwidth sharing.

5.1.4 Hierarchical Protection

Hierarchical protection is vital for network failure at different layers, as it ensures the fastest and safest protection for services. However, hierarchical protection creates the complexity of protection coordination as protections at various layers have to be coordinated to ensure the reliability of protection.

In OptiX 155/622H(Metro1000) the hierarchical protection is well coordinated by means of bottom top hierarchical delay.

In OptiX 155/622H(Metro1000), perfect SDH protection may be called into play for the point -to-point PDH service and Ethernet transparent transmission service, as it does not involve the bandwidth sharing on the ring.

For ATM service, as the bandwidth sharing mode of transferring point by point, it involves the protection mode of both SDH layer and ATM layer. The failure information can be detected at SDH layer, such as optical path signal loss (LOS) caused by failure of optical fiber, protection of SDH layer may be called into play directly, while protection of ATM layer requires the delay of 80ms. If SDH layer protection is successful, ATM layer protection may be canceled. Yet if SDH layer protection fails, ATM layer protection should be enabled. This practice not only retains the advantages of the fast and safe protection of SDH layer, but also supplements the SDH layer protection with ATM layer protection, further enhancing system security.

For failures at ATM layer (such as ATM cell error), as SDH layer cannot detect the failure information, the ATM layer protection is enabled directly to ensure the instant startup of the protection switching, as shown in Figure 12.

SDH layer

failure

LOS/LOF/B1/B2..

ATM layerfailureATM cellloss...

SDH layerprotection

ATM layer protectionStart

+80ms delay

Servicerestoration

Y

N

No startup

Start

Start

ATM layer failure

ATM cell loss.....

Figure 12 Implementation of hierarchical protection



26 Issue 2.22 June 2001


System Description

27 Issue 2.22 June 2001

Operation, Administration and Maintenance of


6.1 Operation and Maintenance

The design of OptiX 155/622H(Metro1000) system has taken into consideration user’s requirements in the operation and maintenance of the equipment in terms of rack & board design and function setting, and provides powerful equipment maintenance capabilities, including:

n The rack generates audible and visual alarms to remind the network administrators to take proper measures in the case of any emergency.

n It supports six external alarm inputs and two rack alarm outputs to ease operation and management of the equipment.

n Order wire telephone function is provided to ensure dedicated communication channels for administrators of various stations.

n By means of NM system, it is possible to dynamically monitor the equipment running and alarm status of all stations on the network. The NM system will give sound alarm once any alarm occurs.

n The board, host software and data can be upgraded and loaded on-line.

6

Operation, Administration and Maintenance of OptiX 155/622H(Metro1000)


System Description

28 Issue 2.22 June 2001

n With remote maintenance function, the maintenance personnel can remotely maintain OptiX 155/622H(Metro1000) system on public switched telephone network if the equipment is faulty.

Operation, Administration and Maintenance of OptiX 155/622H(Metro1000)


System Description

Issue 2.22 June 2001 29

6.2 OptiX iManager NM System

OptiX 155/622H(Metro1000) is managed by NM system OptiX iManager in a unified way. OptiX iManager is in compliance with relevant ITU-T recommendations. It can manage, maintain and test the fault, performance, configuration, security and other aspects of the whole optical transmission system through Qx interface, and provides End-to-End management function as required by the user. NM system improves the QoS of the network, reduces the maintenance cost and ensures rational use of network resources.

Huawei Technologies Co., Ltd. provides the telecom operators with a whole series of optical transmission systems, which can be used on the network of different layers. To manage subnetwork, regional network or national network efficiently, the NM system is required to have basic operation & maintenance functions, and the monitoring & management capability on transmission network as well. According to the TMN network management hierarchical model, the telecom network management is divided into NE layer (NEL), NE management layer (EML), network management layer (NML), service management layer (SML) and business management layer (BML). NE management system manages the NE equipment within one subnetwork, network management manages the network layer assignment, fault monitoring, performance analysis, resource analysis, circuit dispatching, etc. in a large-scale network.

To adapt to the network management of different scales and different layers, Huawei OptiX iManager network management product series include local maintenance terminal, NE management system, regional network management system, and network management system. It covers TMN applications from its EML and subnetwork management layer to NML, and includes part of the SML functions. All OptiX iManager series products support the unified management of SDH, WDM and Metro equipment. Huawei Technologies Co., Ltd. provides the telecom operators with an integrated network management solution that ranges from a single equipment and a single service to a large scale and multiple services.


System Description

Issue 2.22 June 2001 31

OptiX 155/622H(Metro1000) Technical

Specifications

7.1 Features of OptiX 155/622H(Metro1000) Equipment

To acquaint customers with the system, this section describes the features of the interfaces, cross-connect/access capacities, power supply and structure of the OptiX 155/622H(Metro1000) optical transmission system.

7.1.1 Multiplex Structure

The multiplex structure of OptiX 155/622H(Metro1000) conforms to ITU-T Recommendation G.707, as shown in Figure 13.

7

OptiX 155/622H(Metro1000) Technical Specifications OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP


32 Issue 2.22 June 2001

STM-N AUG VC-4AU-4 C-4

C-3

C-2

C-12

TU-3TUG-3 VC-3

VC-3

VC-2

VC-12

TU-2

TU-121

TU-11

TUG-2

XN X1

X3

X3 X1

X7

X3

X4

139264kbit/s

44736kbit/s

34368kbit/s

6312kbit/s

2048kbit/s

C-11VC-111544kbit/s

qqq

AU-3

Section overhead processing

Level-N(N=1,4,16...)

Pointer processing

Path Overhead processing

Code rate justification

Mapping

Figure 13 Multiplex structure

7.1.2 Interface Type

The interface types provided by OptiX 155/622H(Metro1000) are listed in Table 3.

Table 3 Interface type

Interface Type Rate and Feature of Interface

Electrical interface 1544kbit/s,2048kbit/s,34368kbit/s,44736kbit/s

Optical interface 155520kbit/s,622080kbit/s

Clock interface 2048kbit/s,2048kHz

ATM interface 155520kbit/s

Ethernet interface 10M/100M

Auxiliary interface Management interface, orderwire interface, data interface

1. Electrical interface

The electrical interface types provided by OptiX 155/622H(Metro1000) are shown in Table 4, which conform to ITU -T Recommendation G.703.



Issue 2.22 June 2001 33

Table 4 Electrical interface type

Rate of Electrical Interface Pattern Transmission Line Media

1544kbit/s B8ZS 100Ω balanced line

2048kbit/s HDB3 120Ω balanced line, 75Ω unbalanced line

34368kbit/s HDB3 75Ω unbalanced line

44736kbit/s B3ZS 75Ω unbalanced line

2. Optical interface

The optical interface types provided by OptiX 155/622H(Metro1000) are shown in Table 5, which conform to ITU -T Recommendation G.957.

Table 5 OptiX 155/622H (Metro1000) optical interface type

STM-1 optical interface Ie–1, I-1, S-1.1, L-1.1, L-1.2

STM-4 optical interface Ie-4, S-4.1, L-4.1, L-4.2

Laser security: In compliance with ITU -T Recommendation G.958

Optical fiber connector: SC/PC.

3. ATM optical interface

The type of ATM interface are shown as Table 6.

Table 6 type of ATM interface

Interface type Rate and feature of interface

MT-RJ optical interface 155520kbit/s (single-mode/multi-mode)

4. Ethernet interface

The type of Ethernet interface are shown as Table 7.

Table 7 Ethernet interface type

Interface type Rate and feature of interface

RJ-45 10/100BASE-T self-adaptive



34 Issue 2.22 June 2001

5. Clock interface

The clock interface of OptiX 155/622H(Metro1000) is shown in Table 8.

Table 8 Clock features of OptiX 155/622H(Metro1000)

External Synchronization Source

2 input,2048kbit/s(G.703 §6)or 2048kHz(G.703 §10), 75Ω

Synchronized Outputs 2 output,2048kbit/s(G.703 §6)or 2048kHz(G.703 §10), 75Ω

6. Auxiliary interfaces

The auxiliary interfaces provided by OptiX 155/622H(Metro1000) are shown in Table 9.

Table 9 OptiX 155/622H (Metro1000) auxiliary interface

Administration Interface Ethernet, OAM, F&f interface

Orderwire Telephone Interface 1×two-wire orderwire interfaces

Data Interface 4/2×RS-232 optional serial interfaces

7.1.3 Applications

This equipment can be configured as such NE as ADM, TM, and REG.

7.1.4 Cross-Connect

With the 16×16 space division cross-connect matrix, OptiX 155/622H(Metro1000) can add/drop services at any optical interface and dispatch services between optical interfaces.

7.1.5 Power Supply and Power Consumption

Voltage: in addition to -48V power interface, +24V power interface is also provided to meet the requirements of wireless base station. 220V power adapter is also provided in the case of 220V power supply requirement. Storage batteries are adopted optionally.

Power consumption: the maximum power consumption of the boards is shown in



Issue 2.22 June 2001 35

the following table 10 (error<10%):

Table 10 the max power consumption of boards Board type Power consumption(W) Board type Power consumption(W)

SCB 17.5 SP1D 5.0

PD2S 11.0 PD2D 14.5

PD2T 18.5 OI2S 10.0

OI2D 11.0 ET1 26.1

AIUA 25.2 AIUB 22.1

EMU 2.3 PL3 8.0

SM1D 4.5 HP2D 6.0

PM2T 31.0 PM2D 24.0

PM2S 15.0 OI4 11.5

TDA 12.0 SP2 5.4

SB2L(R) 9.0 SB2D 11.0

7.1.6 Mechanical Structure

The mechanical structure of OptiX 155/622H(Metro1000) equipment is shown in Table 11.

Table 11 OptiX 155/622H(Metro1000) mechanical structure

1600mm(Height)×600mm(Width)×450mm(Depth)



Rack dimensions:

(OptiX 155/622H-C series rack)


7.1.7 Electromagnetic Compatibility

The electromagnetic compatibility of OptiX 155/622H(Metro1000) equipment is in compliance with ETS300386 and ETS300127. For specific content, please refer to Table 12.



36 Issue 2.22 June 2001

Table 12 OptiX 155/622H(Metro1000) electromagnetic compatibility

Radiated Emission In compliance with EN55022

Conducted Emission In compliance with EN55022

Electrostatic Discharge In compliance with EN61000-4-2

Inject current immunity In compliance with ENV50141

Immunity To Radiated Electromagnetic Fields

In compliance with ENV50140

7.1.8 Environmental Conditions

The environmental conditions required by OptiX 155/622H(Metro1000) equipment are shown in Table 13.

Table 13 Environmental conditions

Item Environmental Requirements

Temperatures Humidity

Long term working operation 5°C~40°C 20~80%

Short term working operation 0°C ~45°C 10~90%



Issue 2.22 June 2001 37

7.2 Main Indexes of OptiX 155/622H(Metro1000)

This part lists the standard requirements of ITU-T on optical /electrical interfaces, clock synchronization, electromagnetic compatibility, and environment indexes, as well as the actual testing results or typical values of OptiX 155/622H(Metro1000).

7.2.1 Optical Interface Indexes

1. Specifications of optical interface parameters

1) Classification of optical interfaces

Different launched optical powers and receiver sensitivities may lead to different transmission distances possible. The categorization of optical interfaces supported by OptiX 155/622H(Metro1000) is shown in Table 14.

Table 14 Optical Interface Classification

Inter-office Communication Application

Intra-office Communication Short Distance Long Distance

Nominal Wavelength

of Optical Source (nm)

1310 1310 1310 1310 1550

Fiber Type Multi-mode fiber

G.652 G.652 G.652 G.652

Classification Ie-1 I-1 S-1.1 L-1.1 L-1.2

STM-1 Transmission Distance (km) *

0.5 28 28 56 87

Classification Ie-4 - S-4.1 L-4.1 L-4.2 STM-4 Transmission

Distance (km)* - - 20 47 -

Note: "Transmission Distance" is used for categorization rather than normalization.

2) Optical interface parameters

Parameters for different types of optical interfaces are shown in Table 15 and Table 16.



38 Issue 2.22 June 2001

Table 15 Specifications for STM-1 optical interface parameters

Item Unit Numerical value

Nominal Bit Rate kbit/s STM-1 155520

Application code Ie-1 I-1 S-1.1 L-1.1 L-1.2

Operating wavelength range nm 1260-1360

1260-1360

1261-1360

1280-1335

1480-1580

Source type LED MLM MLM MLM SLM

Max. RMS Width (ó) nm 80 40 7.7 3 -

Max. -20dB Width nm - - - - 1

-Min. side mode suppression ratio

dB - - - - 30

Max. Mean Launched Power

dBm -14 -8 -8 0 0

Min. Mean Launched Power

dBm -19 -15 -15 -5 -5

Transmitter at reference point S

Min. extinction ratio dB 8.2 8.2 8.2 10 10

Attenuation range dB 0-7 0-7 0-12 10-28 10-28

Max. dispersion ps/nm 25 18 96 246 NA

Min. Optical Return Loss of Cable Plant at S (including any connectors)

dB NA NA NA NA 20 Optical Path of Point S&R

Max. discrete reflectance between points S&R

dB NA NA NA NA -25

Min. sensitivity dBm -23 -23 -28 -34 -34

Min. Overload dBm -14 -8 -8 -10 -10

Maximum optical path penalty

dB 1 1 1 1 1

Receiver at reference point R

Maximum reflectance of receiver measured at R

dB NA NA NA NA -25



Issue 2.22 June 2001 39

Table 16 Specifications for STM-4 optical interface parameters

Item Unit Numerical value

Nominal Bit Rate kbit/s STM-4 622080

Application code I-4.1 S-4.1 L-4.1 L-4.2

Operating wavelength range nm 1261-1360

1293-1334/

1274-1356

1300-1325/

1296-1300

1480-1580

Source type MLM MLM MLM SLM

Max. RMS Width (ó) nm 14.5 4/2.5 2.0/1.7 -

Max. -20dB Width nm - - - <1

-Min. side mode suppression ratio

dB - - - 30

Max. Mean Launched Power

dBm -8 -8 2 2

Min. Mean Launched Power

dBm -15 -15 -3 -3

Transmitter at reference point S

Min. extinction ratio dB 8.2 8.2 10 10

Attenuation range dB 0-7 0-12 10-24 10-24

Max. dispersion ps/nm 13 46/74 92/109 2400

Min. Optical Return Loss of fiber at S (including any connectors)

dB NA NA 20 24 Optical Path of Point S&R

Max. discrete reflectance between points S & R

dB NA NA -25 -27

Min. sensitivity dBm -23 -28 -28 -28

Min. overload dBm -8 -8 -8 -8

Max. optical path penalty

dB 1 1 1 1

Receiver at Reference Point R

Max. reflectance of receiver measured at R

dB NA NA -14 -27



40 Issue 2.22 June 2001

2. Mean launched power

Table 17 shows the mean launched power of each optical interface provided by OptiX 155/622H(Metro1000).

Table 17 Mean launched optical power

Optical interface level

Optical interface type

Standard requirements (dBm)

Ie-1 -19 ~-14

I-1 -15 ~-8

S-1.1 -15~-8

L-1.1 -5~0

STM-1

L-1.2 -5~0

I-4 -15~-8

S-4.1 -15~-8

L-4.1 -3~+2 STM-4

L-4.2 -3~+2

3. Extinction ratio (EX)

Extinction ratio of various optical interfaces provided by OptiX 155/622H(Metro1000) is shown in Table 18.

Table 18 Extinction ratio (EX)

Optical interface level Optical interface type Standard requirements (dB)

Ie-1 > 8.2

I-1 > 8.2

S-1.1 > 8.2

L-1.1 > 10

STM-1

L-1.2 > 10

I-4 > 8.2

S-4.1 > 8.2

STM-4

L-4.1 > 10



Issue 2.22 June 2001 41

L-4.2 > 10

4. Receiver sensitivity (BER=1×10-10)

The receiver sensitivity specifications for various optical interfaces provided by the OptiX 155/622H(Metro1000) are shown in Table 19.

Table 19 Receiver sensitivity



Standard Requirements (dBm)

Ie-1 < -25

I-1 < -25

S-1.1 < -28

L-1.1 < -34

STM-1

L-1.2 < -34

I-4 < -23

S-4.1 < -28

L-4.1 < -28 STM-4

L-4.2 < -28

5. Receiver overload optical power (BER=1×10-10)

Specifications for the overload optical power of the receiver of each optical interface provided by the OptiX 155/622H(Metro1000) are shown in Table 20.

Table 20 Receiver overload optical power



Standard Requirements (dBm)

Ie-1 > -14

I-1 > -14

S-1.1 > -8

L-1.1 > -10

STM-1

L-1.2 > -10

Ie-4 > -8 STM-4

S-4.1 > -8



42 Issue 2.22 June 2001

L-4.1 > -8

L-4.2 > -8

6. Allowable frequency deviation at optical input port

Specifications for the allowable frequency deviation for the optical input port of each optical interface provided by the OptiX 155/622H(Metro1000) are shown in Table 21.

Table 21 Allowable frequency deviation for the optical input port

Optical Interface Level

ITU-T Specifications (dB)

STM-1 ±20

STM-4 ±20

7. Optical output port AIS rate tolerance

The optical output port AIS rate tolerance indexes of various optical interfaces provided by OptiX 155/622H(Metro1000) are shown in Table 22.

Table 22 Optical output port AIS rate tolerance

Optical Interface Level ITU-T Specifications (dB)

STM-1 ±20

STM-4 ±20

7.2.2 Specifications of the Electrical Interface Performance

1. Tolerance of output port signal rate

The output port signal rate tolerance indexes of various electrical interfaces provided by OptiX 155/622H(Metro1000) are shown in Table 23.

Table 23 Tolerance of output port signal rate

Electrical Interface Types Specifications (ppm)

1544kbit/s ±50

2048kbit/s ±50

34368kbit/s ±20



Issue 2.22 June 2001 43

44736kbit/s ±20

2. Attenuation tolerance at input port

Specifications for the allowable attenuation at the input port of various electrical interfaces provided by OptiX 155/622H(Metro1000) are shown in Table 24.

Table 24 Input port allowable attenuation

Electrical Interface Types Specifications (dB)

1544kbit/s not specified

2048kbit/s 0~6

34368kbit/s 0~12

44736kbit/s not specified

3. Frequency deviation tolerance at input port

Specifications for the permissible frequency deviation for the input port of various electrical interfaces provided by OptiX 155/622H(Metro1000) are shown in Table 25.

Table 25 Permissible frequency deviation of input port

Electrical Interface Types Specifications (ppm)

1544kbit/s ±120

2048kbit/s ±50

34368kbit/s ±20

44736kbit/s ±20

4. Anti- interference capability at input port

The input port is required to possess the anti-interference ability due to the electromagnetic interference effect on the transmission cable. The anti- interference capability of the E1/T1 electrical interface provided by OptiX 155/622H(Metro1000) are shown in Table 26.

Table 26 Input port anti-interference capability

Electrical Interface Types Specifications

2048kbit/s 18dB



44 Issue 2.22 June 2001

1544kbit/s 18dB



Issue 2.22 June 2001 45

7.2.3 Timing and Synchronization Indexes

1. Output jitter

Specifications for the output jitter of OptiX 155/622H(Metro1000) equipment are shown in Table 27.

Table 27 Output jitter

Clock Interface Index of Output Jitter (UIp-p)

1 0.05

2 0.05

2. Output frequency accuracy of internal oscillator in free-run mode

The internal clock frequency accuracy indexes of OptiX 155/622H(Metro1000)

equipment are shown in Table 28.

Table 28 Clock output frequency

Clock Interface Specifications (ppm)

1 ±4.6

2 ±4.6

3. Chronic phase variation (in the locked mode)

The chronic phase variation is caused by factors such as temperature and aging, which result in the gradual deviation of the output signal from the reference master clock. It is often indicated by the maximum time interval error (MTIE) and time deviation (TDEV). The chronic phase variation indexes of OptiX 155/622H(Metro1000) equipment are shown in Tables 29 and 30.

Table 29 Maximum time interval error (MTIE)

Specifications Timing Source Interface MTIE 100s 300s 600s 1000s

1 63.39ns 79.01ns 90.76ns 100.52ns

2 63.39ns 79.01ns 90.76ns 100.52ns



46 Issue 2.22 June 2001

Table 30 Time deviation (TDEV)

Specifications Timing Source Interface TDEV 100s 300s 600s 1000s

1 6.4ns 6.4ns 6.4ns 6.4ns

2 6.4ns 6.4ns 6.4ns 6.4ns

7.2.4 Jitter Performance Indexes

1. Output jitter of the STM-1/STM-4 synchronous interface of SDH equipment

The output jitter indexes of STM -N interface of OptiX 155/622H(Metro1000) are shown in Table 31.

Table 31 STM-N output jitter

Optical Output Jitter (UIp-p) Optical interface level Optical interface type B1(f1~f4) B2(f3~f4)

Ie-1 0.50 0.10

I-1 0.50 0.10

S-1.1 0.50 0.10

L-1.1 0.50 0.10

STM-1

L-1.2 0.50 0.10

Ie-4 0.50 0.10

S-4.1 0.50 0.10

L-4.1 0.50 0.10 STM-4

L-4.2 0.50 0.10

2. Jitter & wander tolerance of the STM-1/STM-4 input port of SDH equipment

The jitter tolerance indexes of STM-N input port provided by OptiX 155/622H(Metro1000) are shown in Tables 32 and 33.



Issue 2.22 June 2001 47

Table 32 Input jitter tolerance at STM-N input port

Jitter Toleration Specifications (UI) STM

Jitter Frequency f1 Jitter Frequency f2 Jitter Frequency f3

Jitter Frequency f4

STM-1 1.5 1.5 0.15 0.15

STM-4 1.5 1.5 0.15 0.15

Table 33 Jitter measurement filter frequency

STM f1(Hz) f2(kHz) f3(kHz) f4(MHz)

STM-1 500 6.5 65 1.3

STM-4 1000 25 250 5

3. Input jitter and wander tolerance of PDH tributary interface

The input jitter tolerance indexes of PDH tributary interface provided by OptiX 155/622H(Metro1000) are shown in Tables 34 and 35.

Table 34 Input jitter tolerance of PDH tributary interface

Jitter Tolerance Specifications (UI)

Tributary Rate (kbit/s) Jitter Frequency

f1 Jitter Frequency f2 Jitter Frequency

f3 Jitter Frequency f4

1544 5.0 5.0 0.1 0.1

2048 1.5 1.5 0.2 0.2

33436 1.5 1.5 0.15 0.15

44736 1.5 1.5 0.15 0.15

Table 35 Jitter measurement filter frequency

Tributary Rate (kbit/s) f1(Hz) f2(kHz) f3(kHz) f4(kHz)

1544 1 - 8 40

2048 20 2.4 18 100

34368 100 1 10 800

44736 100 1 30 400



48 Issue 2.22 June 2001

4. Mapping jitter at PDH tributary interface

The mapping jitter indexes of PDH tributary interface provided by OptiX 155/622H(Metro1000) are shown in Table 36.

Table 36 Mapping jitter of PDH tributary interface

Mapping Jitter (UIp-p) Electrical Interface Types B1 (f1~f4) B2 (f3~f4)

1544kbit/s for further study for further study

2048kbit/s for further study 0.075

34368kbit/s 0.4 0.075

44736kbit/s for further study 0.1

5. Combined jitter at PDH tributary interface

The combined jitter indexes of PDH tributary interface provided by OptiX 155/622H(Metro1000) are shown in Table 37.

Table 37(a) Combined jitter indexes of PDH tributary interface

Reverse Polarity Single Pointer (UIp-p) Regular Pointers (UIp-p)

B1 Standard Requirements Electrical Interface Types Classification

B1 B2 B1 B2

1544kbit/s 1.5 for further study 1.5 for further study

2048kbit/s 0.4 0.075 0.4 0.075

34368kbit/s 0.4 0.075 0.4 0.075

44736kbit/s for further study for further study for further study for further study

Table 37 (b) Combined jitter indexes of PDH tributary interface

Regular Pointers with one missing pointer (UIp-p)

Double Pointers of opposite polarity (UIp-p)

Standard Requirements Electrical Interface Types Classification

B1 B2 B1 B2

1544kbit/s 1.5 for further study 1.5 for further study



Issue 2.22 June 2001 49

Regular Pointers with one missing pointer (UIp-p)

Double Pointers of opposite polarity (UIp-p)

Standard Requirements Electrical Interface Types Classification

B1 B2 B1 B2

2048kbit/s 0.4 0.075 0.4 0.075

34368kbit/s 0.4 0.075 0.4 0.075

44736kbit/s for further study for further study for further study for further study

7.2.5 Electromagnetic Compatibility (EMC)

The OptiX 155/622H(Metro1000) optical transmission equipment is designed with reference to ETS EN 300386 series as stipulated by the European Telecom Standard Institute (ETSI) and has passed relevant EMC tests. The EMC test indexes of OptiX 155/622H(Metro1000) are shown in Table 38.

Table 38 EMC test results

Test Item Standards Test results

Conducted Emission EN55022 Class A pass

Radiated Emission EN55022 Class A pass

Electrostatic Discharge IEC1000-4-2 (Air Discharge:8kV;

Contact Discharge:8kV)

pass

Immunity To Radiated Electromagnetic Fields IEC1000-4-3(10V/m) pass

Electrical Transient/Burst Immunity IEC1000-4-4(2kV) pass

Inject Current Immunity IEC1000-4-6(3V) Pass


System Description

Issue 2.22 June 2001 50

Terms and Abbreviations

Abbreviations Full-length form

ABR Available Bit Rate

ADM Add/Drop Multiplexer

AIS Alarm Indication Signal

AITS Acknowledged Information Transfer Service

ALS Alarm Seconds

AM Administration Module

AN Access Network

APS Automatic Protection Switching

ATM Asynchronous Transfer Mode

AU Administrative Unit

AU-AIS Administrative Unit Alarm Indication Signal

AU-LOP Loss of Administrative Unit Pointer

AU-NPJE AU Pointer Negative Justification

AU-PPJE AU Pointer Positive Justification

AUG Administration Unit Group

A

Terms and Abbreviations OptiX 155/622H(Metro1000) STM-1/STM-4 MSTP


Issue 2.22 June 2001 51


AUP Administration Unit Pointer

BBER Background Block Error Ratio

BIP-N Bit Interleaved Parity N code

CBR Constant Bit Rate

CLNP Connectionless Network Protocol

CM Communication Module

CM Cross-connect Matrix

CMI Coded Mark Inversion

CMISE Common Management Information Service Element

CSES Continuous Severely Errored Second

CW Control Word

DBA Database Administrator

DBCSN Database Control System Nucleus

DBOS Database Organizing System

DBSS Database Security System

DCC Data Communication Channel

DCN Data Communication Network

DDW Data Description Word

DXC Digital Cross-connect

ECC Embedded Control Channel

EMC Electromagnetic Compatibility

EMI Electromagnetic Interference

EMS Electromagnetic Susceptibility

ESD Electronic Static Discharge

ESR Errored Second Ratio

ETSI European Telec ommunication Standards Institute

FEBE Far End Block Error



52 Issue 2.22 June 2001


GNE Gateway Network Element

HCS Higher Order Connection Supervision

HDB3 High Density Bipolar of order 3 code

HDLC High Digital Link Control

HP-RDI Higher Order Path Remote Defect Indication

HP-REI Higher Order Path Remote Error Indication

HPA Higher Order Path Adaptation

HPC Higher Order Path Connection

HPT Higher Order Path Termination

HRDS Hypothetical Reference Digital Section

ISDN Integrated Services Digital Network

ITU-T International Telecommunication Union-Telecommunication Standardization Sector

LAPB Link Access Protocol-Balanced

LCN Local Communication Network

LCS Low Order Connection Supervision

LLC Logic Link Control

LOF Loss of Frame

LOP Loss of Pointer

LOS Loss of Signal

LPA Lower Order Path Adaptation

LPC Lower Order Path Connection

LPT Lower Order Path Termination

LU Line Unit

MAC Media Access Control

MCF Message Communication function

MN-NES MN-Network Element System

MN-RMS MN-Regional Management System



Issue 2.22 June 2001 53


MS-AIS Multiplex Section -Alarm Indication Signal

MS-RDI Multiplex Section-Remote Defect Indication

MSA Multiplex Section Adaptation

MSOH Multiplex Section Overhead

MSP Multiplex Section Protection

MST Multiplex Section Termination

MTIE Maximum Time Interval Error

NE Network Element

NNI Network Mode Interface

OAM Operation, Administration and Maintenance

OAM&P Provisioning

OHA Overhead Access

OOF Out of Frame

OS Operating System

PDH Plesiochronous Digital Hierarchy

POH Path Overhead

PPI PDH Physical Interface

RDI Remote Defect Indication

REG Regenerator

RMS Root Mean Square

RSOH Regenerator Section Overhead

RST Regenerator Section Termination

RSU Remote Subscriber Unit

RWS Remote Workstation

SBS Synchronous Backbone System

OptiX MN OptiX Management Network

SCC System Control & Communication



54 Issue 2.22 June 2001


SD Signal Degrade

SDH Synchronous Digital Hierarchy

SEC SDH Equipment Clock

SEMF Synchronous Equipment Management Function

SESR Severely Errored Second Ratio

SES Severely Errored Second

SETS Synchronous Equipment Timing Physical Interface

SETPI Synchronous Equipment Timing Source

SLM Signal Label Mismatch

SMS SDH Management Subnetwork

SOH Section Overhead

SPI SDH Physical Interface

STG Synchronous Timing Generator

STM-N STS-N

STS-N STS-N

TCP/IP Transport Control Protocol/Internet Protocol

TDEV Time Deviation

TF Transmit Failure

TIM Trace Identifier Mismatch

TM Termination Multiplexer

TMN Telecommunication Management Network

TSI Time Slot Interchange

TU Tributary Unit

TU-LOM TU-Loss of Multi-frame

TUG Tributary Unit Group

TUP Tributary Unit Pointer

TUPP Tributary Unit Payload Process



Issue 2.22 June 2001 55


UAT Unavailable Time

UBR Unspecified bit rate

UITS Unacknowledged Information Transfer Service

UNEQ Unequipped

UNI User Network Interface

VBR Variable Bit Rate

re-VBR Real time Variable Bit Rate

nor-VBR No real time Variable Bit Rate

VC Virtual Container

VLAN Virtual Local Area Network

VP Virtual Path

VPG Virtual Path Group

VW Verifying Word

XC Cross-Connection Unit

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