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ZXWM M920Backbone DWDM Equipment

Product Description

Version:V5.10P01

ZTE CORPORATIONNo. 55, Hi-tech Road South, ShenZhen, P.R.ChinaPostcode: 518057Tel: +86-755-26771900Fax: +86-755-26770801URL: http://support.zte.com.cnE-mail: [email protected]

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Revision History

Revision No. Revision Date Revision Reason

R1.1 2013-12-20 Add CX21 subrack, CX31 subrack, EQG2 board and EHG1 board.

R1.0 2012-12-15 First release

Serial Number: SJ-20130318152421-001

Publishing Date: 2013-12-20(R1.1)

SJ-20130318152421-001|2013-12-20(R1.1) ZTE Proprietary and Confidential

ContentsAbout This Manual ......................................................................................... I

Chapter 1 Product Orientation and Application ...................................... 1-11.1 ZTE WDM Product Family .................................................................................. 1-1

1.2 Networking Application ....................................................................................... 1-2

1.2.1 Point-to-Point Network.............................................................................. 1-2

1.2.2 Chain Network ......................................................................................... 1-2

1.2.3 Ring Network ........................................................................................... 1-2

1.2.4 Ring-Chain Network ................................................................................. 1-3

1.2.5 Tangent Ring Network .............................................................................. 1-3

1.2.6 Cross Network ......................................................................................... 1-4

1.2.7 Mesh Network.......................................................................................... 1-4

1.3 Network Element Type........................................................................................ 1-4

1.3.1 OTM Configurations ................................................................................. 1-4

1.3.2 FOADM Configurations........................................................................... 1-12

1.3.3 ROADM Configurations .......................................................................... 1-16

1.3.4 OLA Configurations ................................................................................ 1-24

Chapter 2 Product Characteristics ........................................................... 2-12.1 Technology Characteristics ................................................................................. 2-1

2.1.1 Forward Error Correction Functions........................................................... 2-1

2.1.2 APSD/APR Function................................................................................. 2-1

2.1.3 Erbium-Doped Fiber Amplifier (EDFA) ...................................................... 2-2

2.1.4 Distributed RAMAN Amplification .............................................................. 2-2

2.1.5 Intelligent ROADM.................................................................................... 2-2

2.1.6 Performance Monitoring Function.............................................................. 2-3

2.1.7 Electrical Cross-Connect Function............................................................. 2-3

2.1.8 RPOA Technology.................................................................................... 2-4

2.2 Upgrade and Maintenance Characteristics ........................................................... 2-4

Chapter 3 System Functions..................................................................... 3-13.1 Line Transmission Function ................................................................................ 3-1

3.1.1 Transmission Capacity.............................................................................. 3-1

3.1.2 Channel Rate........................................................................................... 3-1

3.1.3 Channel Spacings .................................................................................... 3-2

3.1.4 Transmission System Codes..................................................................... 3-2

I


3.2 Automatic Power Optimization Function............................................................... 3-5

3.2.1 OMS Power Management......................................................................... 3-5

3.2.2 OCH Power Management ......................................................................... 3-6

3.3 IWF Function ..................................................................................................... 3-6

3.4 Wavelength Tunable Function ............................................................................. 3-6

3.5 Performance Monitoring Function........................................................................ 3-7

3.6 Chromatic Dispersion Compensation................................................................... 3-8

3.7 Service Functions............................................................................................... 3-8

3.7.1 Service Access Function........................................................................... 3-8

3.7.2 Service Convergence Function.................................................................. 3-9

3.8 Communication and Supervision Function ......................................................... 3-10

3.8.1 Supervisory Channels............................................................................. 3-10

3.8.2 Communication Functions........................................................................3-11

3.9 Alarm Monitoring Function ................................................................................ 3-12

3.9.1 External Alarm Input and Output Function................................................ 3-12

3.9.2 Internal Alarm Monitoring Function .......................................................... 3-12

3.10 Protection Functions....................................................................................... 3-13

3.10.1 SNP 1+1 Protection .............................................................................. 3-13

3.10.2 Cross-Connect Board 1+1/2:2/4:2 Protection.......................................... 3-13

3.10.3 OMS 1+1 Protection ............................................................................. 3-14

3.10.4 OCH 1+1 Protection ............................................................................. 3-16

3.10.5 Two-Fiber Bidirectional OCH Shared Protection ..................................... 3-16

3.10.6 Chain Network-Based Electrical Layer 1+1 Wavelength Protection .......... 3-17

3.10.7 Ring Network-based Electrical Layer Two-Fiber Bidirectional ChannelShared Protection ................................................................................. 3-19

3.10.8 Protection Capability for EMS Channel .................................................. 3-20

3.11 Clock Management Function ........................................................................... 3-20

3.12 Clock Time Synchronization Function .............................................................. 3-20

Chapter 4 Hardware Architecture ............................................................. 4-14.1 Cabinet.............................................................................................................. 4-1

4.2 Board ................................................................................................................ 4-2

Chapter 5 Software Architecture............................................................... 5-15.1 Software Architecture Overview .......................................................................... 5-1

5.2 EMS Software.................................................................................................... 5-1

5.3 NE Control and Processing Software................................................................... 5-3

5.4 Board Software .................................................................................................. 5-4

5.5 Communication Protocols and Interfaces ............................................................. 5-4

II


Chapter 6 Technical Specifications .......................................................... 6-16.1 Requirements on Operating Wavelength.............................................................. 6-1

6.1.1 Allocation of Continuous Wavelengths ....................................................... 6-1

6.1.2 Allocation of Uncontinuous Wavelengths.................................................... 6-5

6.2 Service Access and Convergence Subsystem Specifications ................................ 6-7

6.2.1 Board Types ............................................................................................ 6-7

6.2.2 2.5 G Board Specifications........................................................................ 6-7

6.2.3 10 G Board Specifications......................................................................... 6-8

6.2.4 40G Board Specifications.......................................................................... 6-9

6.2.5 100 G Board Specifications..................................................................... 6-10

6.3 Optical Mux/DeMux Subsystem Specifications ...................................................6-11

6.3.1 SOAD Board Specifications .....................................................................6-11

6.3.2 OMU Board Specifications ...................................................................... 6-12

6.3.3 ODU Board Specifications ...................................................................... 6-14

6.3.4 ODUB Board Specifications .................................................................... 6-14

6.3.5 OCI Board Specifications........................................................................ 6-15

6.3.6 VMUX Board Specifications .................................................................... 6-16

6.3.7 VMUXB Board Specifications .................................................................. 6-16

6.3.8 SSDM Board Specifications .................................................................... 6-17

6.3.9 SOGMD Board Specifications ................................................................. 6-18

6.3.10 WBU Board Specifications ................................................................... 6-18

6.3.11 WSU Board Specifications .................................................................... 6-19

6.3.12 WBM Board Specifications.................................................................... 6-21

6.3.13 PDU Board Specifications ..................................................................... 6-22

6.4 Optical Amplification Subsystem Specifications ................................................. 6-23

6.4.1 SEOA Board Specifications..................................................................... 6-23

6.4.2 EOA Board Specifications....................................................................... 6-26

6.4.3 DRA Board Specifications....................................................................... 6-31

6.4.4 LAC Board Specifications ....................................................................... 6-32

6.5 Optical Layer Management Subsystem Specifications ........................................ 6-33

6.5.1 OPM Board Specifications ...................................................................... 6-33

6.5.2 EOPM Board Specifications .................................................................... 6-34

6.5.3 OWM Board Specifications ..................................................................... 6-35

6.5.4 EOWM Board Specifications ................................................................... 6-35

6.6 Protection Subsystem Specifications ................................................................. 6-35

6.6.1 SOP Board Specifications....................................................................... 6-35

6.6.2 SOPCS Board Specifications .................................................................. 6-36

III


6.6.3 SOPMS Board Specifications.................................................................. 6-37

6.7 Supervision Subsystem Specifications............................................................... 6-38

6.7.1 SOSCB Board Specifications .................................................................. 6-38

6.7.2 CCP Board Specifications....................................................................... 6-39

6.8 RPOA Subsystem Specifications....................................................................... 6-39

6.8.1 Applicable Transmission Codes............................................................... 6-39

6.8.2 RPOA Subsystem Optical Specifications ................................................. 6-40

6.9 DCM Technical Specifications ........................................................................... 6-40

6.10 Environment Specifications ............................................................................. 6-42

6.10.1 Power Supply Requirement................................................................... 6-43

6.10.2 Storage Environment ............................................................................ 6-43

6.10.3 Transportation Environment .................................................................. 6-44

6.10.4 Operational Environment ...................................................................... 6-46

6.11 Electro Magnetic Compatibility Requirements ................................................... 6-47

6.12 Weight Power Consumption Dimensions.......................................................... 6-48

6.12.1 Power Consumption Specifications........................................................ 6-48

6.12.2 Dimensions and Weight ........................................................................ 6-51

Appendix A Standards and Recommendations ..................................... A-1

Figures............................................................................................................. I

Tables ............................................................................................................ III

Glossary .......................................................................................................VII

IV


About This ManualPurposeThis manual provides information about the ZXWM M920Backbone DWDM Equipment.

The ZXWM M920 system is designed for long-haul transmission in backbone-networksand supports the 160/192 × 10 Gb/s or 80/96 × 40 Gb/s system.

What is in This ManualThis manual contains the following chapters:

Chapter Summary

1, Product Orientation and

Application

Describes the product Orientation, networking application and

network element type of the ZXWM M920.

2, Product Characteristics Describes the product characteristics of the ZXWM M920 system,

including technical characteristics, and upgrade and maintenance

characteristics.

3, System Functions Describes system configuration, networking modes, and configuration

example of the ZXWM M920 equipment.

4, Hardware Architecture Describes the hardware architecture and functional subsystems of the

ZXWM M920equipment.

5, Software Architecture Describes the software architecture, including board software, NE

control and processing software, EMS software, communication

protocol, and interfaces of the ZXWM M920 equipment.

6, Technical Specifications Describes system operating wavelength, technical specifications of

board, environment specifications and weight power consumption

dimensions of the ZXWM M920 equipment.

Appendix A, Standards and

Recommendations

Describes the Standards and Recommendations of the ZXWM M920

equipment.

ConventionsThis manual uses the following typographical conventions:

Typeface Meaning

Italics Variables in commands. It may also refer to other related manuals and documents.

Bold Menus, menu options, function names, input fields, option button names, check boxes,

drop-down lists, dialog box names, window names, parameters, and commands.

Constant

width

Text that you type, program codes, filenames, directory names, and function names.

I


Typeface Meaning

[ ] Optional parameters.

{ } Mandatory parameters.

| Separates individual parameters in a series of parameters.

Danger: indicates an imminently hazardous situation. Failure to comply can result in

death or serious injury, equipment damage, or site breakdown.

Warning: indicates a potentially hazardous situation. Failure to comply can result in

serious injury, equipment damage, or interruption of major services.

Caution: indicates a potentially hazardous situation. Failure to comply can result in

moderate injury, equipment damage, or interruption of minor services.

Note: provides additional information about a particular topic.

II


Chapter 1Product Orientation andApplicationTable of Contents

ZTE WDM Product Family..........................................................................................1-1Networking Application ...............................................................................................1-2Network Element Type ...............................................................................................1-4

1.1 ZTE WDM Product FamilyZTE WDM equipments meet the application requirements of MAN/LAN (from the corelayer, the convergence layer, to the access layer), toll network, and trunk network. Theyprovide user with transmission solutions with different capability and different transmissiondistance.

Figure 1-1 shows the ZTE WDM product family, including ZXWM M920, ZXMP M820,ZXMP M720 and ZXMP M600.

Figure 1-1 ZTE WDM Product Family

l ZXWM M920 is a new-generation optical network product. It combines advancedtransmission technologies, such as trunk network large capacity and long-haultransmission, with high equipment integration technology. It is applicable tointernational, national, inter-province, and intra-province trunk; local switchingnetwork; and various private networks.

1-1


ZXWM M920 Product Description

l ZXMP M820 is an intelligent WDM equipment. It can upload the WSON controlplatform. It is applicable to local networks with various scales and the metro corenetwork.

l ZXMP M720 is a multi-transmission platform compact WDM equipment, which isapplicable to the core layer, convergence layer, and access layer of MAN/LAN.It is applied in the construction of trunk WDM network with small capability andmedium-long transmission distance.

l ZXMP M600 is applicable to the convergence layer, access layer of large-scale MAN,and all layers of small-medium MAN. It is applied in the construction of LAN with theshort distance.

1.2 Networking Application

1.2.1 Point-to-Point NetworkFor the point-to-point network, see Figure 1-2.

Figure 1-2 Point-to-Point Network Application

1.2.2 Chain NetworkFor the chain network, see Figure 1-3.

Figure 1-3 Chain Network Application

1.2.3 Ring NetworkFor the ring network, see Figure 1-4.

1-2


Chapter 1 Product Orientation and Application

Figure 1-4 Ring Network Application

1.2.4 Ring-Chain NetworkFor the ring-chain network, see Figure 1-5.

Figure 1-5 Ring-chain Network Application

1.2.5 Tangent Ring NetworkFor the tangent ring network, see Figure 1-6.

Figure 1-6 Tangent Ring Network Application

1-3



1.2.6 Cross NetworkFigure 1-7 shows an application example of cross network consisting of ZXWM M920FOADM, OLA, and OTM equipment.

Figure 1-7 CROSS NETWORK APPLICATION

1.2.7 Mesh NetworkAmong network applications, when optical directions supported by node devices are notfewer than four, the Mesh network mode can be used. When traffic scheduling demandis available at multiple directions, the Mesh network application can perform automaticconnection configurations to meet cross-direction service protection and multiple-directionnetwork management.

1.3 Network Element Type

1.3.1 OTM Configurations

Function and Principle DiagramOTMs are used at terminal nodes of optical lines to add or drop services. The functiondiagram is shown in Figure 1-8.

1-4



Figure 1-8 OTM Equipment Operating Principle Diagram

Board ConfigurationsOTM configurations are described as follows by taking a 96–channel system as anexample.

l If SOTU10G boards are used, the OTM equipment is configured with six subracksand two cabinets. For the subracks and boards configurations, see Figure 1-9 andFigure 1-10.

1-5



Figure 1-9 OTM Equipment Configuration (96-Channel SOTU10G Cabinet 1)

Note:

Parts of optical transponder boards and convergence boards are not contained in thediagram.

1-6



Figure 1-10 OTM Equipment Configuration (96-Channel SOTU10G Cabinet 2)

l If EOTU10G boards are used, the OTM equipment is configured with ten subracksand three cabinets. For the subrack and board configurations, see Figure 1-11, Figure1-12, and Figure 1-13.

1-7



Figure 1-11 OTM Equipment Configuration (96-Channel EOTU10G Cabinet 1)

1-8




1-9




Fiber ConnectionsThe fiber connections in a 96-channel OTM equipment are shown in Figure 1-14.

1-10



Figure 1-14 Optical Connections in OTM Equipment (96-Channel)

Configuration DescriptionFor the configuration description of the OTM equipment, refer to Table 1-1.

Table 1-1 Configuration Description

Configuration Requirements Description

To implement the

multiplexing/demultiplexing

of channels,

Each OMU/ODU board occupies 4 slots.

To implement the optical

amplification,

Each EONA board occupies 4 slots

Each SEOBA board occupies 1 slot.

The EOBAH board can be used to replace the SEOBA board to

meet the requirements for high output power.

The EOBAH board occupies 4 slots.

For the 8/16/32/40/48 channel

system,

when SEOBA or SEOPA boards are not configured, the

SSDM board can be used for the multplexing/demultiplexing of

1550/1510 nm wavelengths.

For the 80/96/160/176/192

channel system,

the OCI board and OBM board are used in the 80/96/160/176/192

channel system.

the 80-channel system can also use OMU80/ODU80 boards to

implement wavelength multiplexing/demulitplexing.

1-11




To implement the OCH/OMS 1+1

protection,

if the OCH/OMS 1+1 protection is required, the SOP boards

should be configured. The configuration positions of SOP boards

and optical fiber connections should be determined according

to the protection types.

To implement the OCH 1:N

protection,

if the OCH 1:N protection is required, OMCP boards should be

configured between the user equipment and OTU boards.

For the dispersion compensation

after a long-haul transmission,

the DCM plug-in boxes and DCM modules should be configured

according to the fiber types and the requirements.

To implement the aggregation, any OTU (SOTU10G/EOTU10G) board displayed in Figure

1-14 can be replaced by the aggregate board (SRM41, SRM42,

DSAC, DSAF, FCA, MQT3 or SMUB board).

1.3.2 FOADM Configurations

Function and Principle DiagramFixed Optical Add/Drop Multiplexers (FOADMs) are used at intermediate nodes of opticallines to add/drop part of services and pass through the rest of services. The functiondiagram is shown in Figure 1-15.

Figure 1-15 FOADM Equipment Operating Principle Diagram

FOADM nodes can add/drop optical signals with fixed wavelengths.

1-12



Cabinet and Subrack ConfigurationsThe FOADM equipment is configured with only one cabinet consisting of one mastersubrack and three slave subracks.

Board ConfigurationsCabinet configurations of the FOADM equipment supporting bidirectional add/drop of eightwavelengths are shown in Figure 1-16 and Figure 1-17.

Figure 1-16 FOADM Equipment Configuration (SOTU10G)

1-13



Figure 1-17 FOADM Equipment Configuration (EOTU10G)

Fiber ConnectionsFiber connections in the FOADM equipment supporting unidirectional add/drop of eightwavelengths are shown in Figure 1-18.

1-14



Figure 1-18 FOADM Equipment Fiber Connections (Unidirectional Add/Drop of EightWavelengths)

SOGMD boards can also be used in the FOADM equipment to implement themultiplexing/demultiplexing of a group of wavelengths. The fiber connections are shownin Figure 1-19.

Figure 1-19 FOADM Equipment Fiber Connections (Configured with SOGMD Boards)

1-15



Configuration DescriptionFor the configuration description of the FOADM equipment, see Table 1-2.



Required Boards Each SOAD board occupies one slot, and supports the

transmission/receipt of optical signals in only one direction, that

is, both IN and OUT interfaces of an SOAD board are connected

to the same site.

To add/drop more wavelengths, each SOAD board can add/drop fixed one to four wavelength

signals. If the add/drop function is required for more wavelengths,

SOAD boards and OMU/ODU boards are needed to be

cascaded.

To implement the OCH/OMS

1+1 protection or electrical-layer

service board redundancy 1+1

protection,

the SOP boards should be installed, and positions and optical

connections of the SOP boards should be determined according

to the protection mode.

To implement the OCH 1:N

protection,

OMCP boards should be added between user equipment and

optical transponder boards.

To implement the OMS or OCH

ring protection,

the SOPMS or SOPCS boards should be added, and fiber

connection relations should be determined according to the

protection mode.

For the dispersion compensation

after long-distance transmissions

DCM plug-in boxes should be installed, and dispersion

compensation modules should be configure d as required.

To implement the aggregation, an OTU board shown in Figure 1-19 should be replaced with an

aggregate board (SRM41, SRM42, DSAC or SAUC board).

1.3.3 ROADM Configurations

Equipment FeaturesThe ROADM equipment supports the following features:l Wavelength reconstruction in two directions and in multiple directions.l Adding/dropping local wavelengths: adding/dropping local fixed wavelengths,

adding/dropping any local wavelength at any port, and adding/dropping/broadcastingany direction-irrelevant wavelength.

Cabinet, Subrack and Board ConfigurationThe ROADM equipment is configured with only one cabinet consisting of one mastersubrack and three slave subracks.

Boards: WBU/WBM/WSU/PDU

1-16



Fiber ConnectionsFigure 1-20 illustrates a two-dimension fiber connections diagram of the ROADMequipment configured with WBM.

Figure 1-20 Fiber Connections in ROADM Equipment (Configured with WBM Boards)

Figure 1-21 illustrates a two-dimension fiber connections diagram of the ROADMequipment configured with WBU.

Figure 1-21 Fiber Connections in ROADM Equipment (Configured with WBU Boards)

1-17



Figure 1-22 illustrates a two-dimension fiber connections diagram of the ROADMequipment configured with WSU.

Figure 1-22 Fiber Connections in ROADM Equipment (Configured with WSU Boards)

Figure 1-23 illustrates a three-dimension fiber connections diagram of the ROADMequipment.

Figure 1-23 Fiber Connections in ROADM Equipment (Three Dimensions)

Figure 1-24 illustrates a nine-dimension fiber connections diagram of the ROADMequipment.

1-18



Figure 1-24 Fiber Connections in ROADM Equipment (Nine Dimensions)

Configuration Description1. Each SEOBA board occupies one slot. Each EONA board occupies four slots. Each

WBU/WSU/WBM board occupies four slots.2. If OCH/OMS 1+1 protection or electrical-layer service board redundancy 1+1 protec-

tion is required, SOP boards should be added, and positions and optical connectionsof the SOP boards should be determined according to the protection mode.

3. If OCH 1:N protection is required, OMCP boards should be added between userequipment and optical transponder boards.

4. If OMS or OCH ring protection is required, SOPMSor SOPCS boards should be added,and fiber connection relations should be determined according to the protection mode.

5. If dispersion compensation is required for the OADM equipment after long-haultransmissions, DCM plug-in boxes should be added, and dispersion compensationmodules should be configured as required.

6. If the SOGMD board is configured in network, the black wavelengths in SOGMDboards cannot be occupied.

7. When the ROADM equipment is configured, if only the add/drop function is required,WBU boards should be configured, drop wavelengths should be fixed, and each WBUboard should be configured on direction A and B.

8. When the ROADM equipment is configured, if the add/drop function as well as portconfiguration are required, WSUD boards should be configured.

1-19



9. When the ROADMequipment is configured, if the add/drop function, port configuration,and service broadcast are required, WSUA boards should be configured.

10. When the ROADM equipment is configured, if the add function and pass-throughfunction are required, WBM boards should be configured.

11. When the ROADM equipment is configured, if couplers are required for the powerisolation, PDU boards should be configured.

ROADM Network RelevancesFor the direction/wavelength correlations, refer to Table 1-3.

Table 1-3 Direction/Wavelength Correlation

Item Description

Direction relevance Services in add channels on the local node cannot be sent to any

direction.

Direction irrelevance Services in add channels on the local node can be sent to any

direction.

Wavelength relevance Services cannot be sent to an OTU-type board through any drop

channel on the local node.

Wavelength irrelevance Services can be sent to an OTU-type board through any drop

channel on the local node.

ROADM Network Relevance Implementation Schemesl For the implementation of direction relevance and wavelength relevance, see Figure

1-25.

1-20



Figure 1-25 Direction Relevance and Wavelength Relevance

l For the implementation of direction irrelevance and wavelength relevance, see Figure1-26.

1-21



Figure 1-26 Direction Irrelevance and Wavelength Relevance

l For the implementation of direction irrelevance and wavelength irrelevance, seeFigure 1-27.

1-22



Figure 1-27 Direction Irrelevance and Wavelength Irrelevance

l For the implementation of direction relevance and wavelength irrelevance, see Figure1-28.

1-23



Figure 1-28 Direction Relevance and Wavelength Irrelevance

1.3.4 OLA Configurations

Function and Principle DiagramOptical Line Amplifiers (OLAs) are used to compensate optical signals power aftera long-distance transmission. Dispersion Compensation Modules (DCMs) can beconfigured as required. The OLA equipment without DCM and with DCM are respectivelyshown in Figure 1-29 and Figure 1-30.

1-24



Figure 1-29 Function Diagram of OLA Equipment (Without DCMs)

Figure 1-30 Function Diagram of OLA Equipment (With DCMs)

Board ConfigurationsBoard configurations of the OLA equipment with single-channel rate are described asfollows:

l The single-channel rate is 2.5 Gbit/s.

The OLA equipment with single-channel rate at 2.5 Gbit/s is shown in Figure 1-31.

1-25



Figure 1-31 OLA Equipment Configuration (2.5 Gbit/s)

l The single-channel rate is 10 Gbit/s.

EOLA equipments at 10Gbit/s always combine EONA boards and DCMs to implementthe amplification and dispersion compensation of optical signals. The OLA equipmentwith single-channel rate at 10 Gbit/s is shown in Figure 1-32.

Figure 1-32 OLA Equipment Configuration (10 Gbit/s)

Fiber Connectionsl Fiber connections in the OLA equipment at 2.5 Gbit/s are shown in Figure 1-33.

Figure 1-33 OLA Equipment Fiber Connections (2.5 Gbit/s)

l Fiber connections in the OLA equipment at 10 Gbit/s are shown in Figure 1-34.

1-26



Figure 1-34 OLA Equipment Fiber Connection (10 Gbit/s)

Configuration DescriptionFor the OLA equipment configuration description, refer to Table 1-4.


ConfigurationRequirements

Description

Required Boards Each EONA board occupies four slots.

The EOLAD board can serve as EOLA board

When the transmission rate

is 10 Gbit/s or 40 Gbit/s,

DCMs are used to implement dispersion compensation. DCMs should

be selected according to the fiber type and the actual distance that

needs dispersion compensation.

1-27



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1-28


Chapter 2Product CharacteristicsTable of Contents

Technology Characteristics.........................................................................................2-1Upgrade and Maintenance Characteristics .................................................................2-4

2.1 Technology Characteristics

2.1.1 Forward Error Correction FunctionsThe ZXWM M920 system uses Forward Error Correction (FEC) technology, which has thefollowing advantages:

l Improves the error-tolerance capability of transmitted signalsl Reduces the system requirement on the signal-to-noise ratiol Extends the transmission distance

There are four types of FEC functions: Ordinary FEC , AFEC (Advanced Forward ErrorCorrection) , HD-FEC (Hard Decision Forward Error Correction) , and SD-FEC (SoftDecision Forward Error Correction) , refer to Table 2-1.

Table 2-1 FEC List

Item Description

FEC Type Ordinary FEC AFEC SD-FEC

Frame structure G.709 G.975 G.709

2.5 G 2.660 Gbit/s Unavailable Unavailable

STM-64 10.709 Gbit/s 10.709 Gbit/s Unavailable

10 GE 11.100 Gbit/s 11.100 Gbit/s Unavailable

40 G 43.018 Gbit/s 43.018 Gbit/s Unavailable

Traffic rate

100 G Unavailable Unavailable 120.520 Gbit/s

OSNR 5 dB to 6 dB 7 dB to 9 dB <12.5 dB

2.1.2 APSD/APR FunctionThe ZXWM M920 system supports two modes of Automatic Power Control (APC)functions: Automatic Power ShutDown (APSD) and Automatic Power Reduction (APR).

2-1



When no optical input power is detected by a detection board that has the opticalperformance detection function, the detection board sends a message to the SNPboard. The SNP board takes control of the execution board (such as an EOA board) toautomatically reduce or shut down the power, so as to prevent eye injuries by a laser.After the fault is removed, the original board power can be recovered automatically ormanually.

2.1.3 Erbium-Doped Fiber Amplifier (EDFA)The ZXWM M920 system uses EDFA technology to improve the transmission distance. Itprovides the following benefits:

l Greatly reduces the cost of optical regeneration.l High gain, low noise, large bandwidth, high output power, high pump efficiency, low

insertion loss, and insensitivity for polarization.

2.1.4 Distributed RAMAN AmplificationIn the Optical Transport Network (OTN)/Wavelength-Division Multiplexing (WDM) systemwith ultra-long-haul transmission distances, using only the EDFA technology to implementthe amplification accumulates spontaneous radiation and restricts the performance ofthe system. The ZXWM M920 system uses a Distributed RAMAN Amplification (DRA)board to effectively improve the optical-amplification performance of the ultra-long-haultransmission system through the combination of EDFA and DRA technologies (thecombination of EOA board and DRA board).

2.1.5 Intelligent ROADMThe ZXWM M920 system provides an intelligent Reconfigurable Optical Add/DropMultiplexer (ROADM). An intelligent ROADM is composed of a Power Distribution Unit(PDU) and a Wavelength Selective Switch Unit (WSU). The intelligent ROADM improvesthe flexibility of the WDM network. Thus, the operator can remotely and dynamicallycontrol the wavelength transmission path, and effectively reduce the operation andmaintenance costs. The detailed functions provided by intelligent ROADM are as follows:

l Provides add/drop of local optical signals.l Supports service broadcast.l Supports wavelength scheduling from up to nine optical directions.l Supports any combinations between wavelength-relevance (wavelength-related,

wavelength-unrelated) and direction-relevance (direction-related,direction-unrelated), including:

à wavelength-related, direction-related;

à wavelength-related, direction-unrelated;

à wavelength-unrelated, direction-related;

à wavelength-unrelated, direction-unrelated.

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Chapter 2 Product Characteristics

2.1.6 Performance Monitoring Functionl The ZXWM M920 system provides an optical performance monitoring unit. This unit

is responsible for measuring parameters of each optical channel, including the opticalpower, central wavelength and Optical Signal-Noise Ratio (OSNR), and sending thesedata to the EMS, in which users can view the performance data in a list or in a graph.

l The optical transponder unit supports performance monitoring and overheadprocessing function. It can locate the faults and fault types according to the followingaccess signals:

à For OTN signals: detects performance and alarm messages, including LossOf Frame (LOF) alarm, Bit Interleaved Parity (BIP-8), the overhead Trail TraceIdentifier (TTI), corrected bit error count, uncorrectable frame count, OTUk-AIS,ODUk-AIS, ODUk-OCI, ODUk-LCK, PM-BIP8, ODUk-PT.

à For SDH signals: monitors RS_BBE(B1) and J0 bytes.

à For GE signals: monitors the packet error count, packet error ratio, and GenericFraming Procedure (GFP) performance.

l The boards on the main optical path use the power collection and monitoringtechnology with great dynamic range and high accuracy. With the technology, thepower measurement error is less than 1 dB and the system performance can be trulyreflected.

2.1.7 Electrical Cross-Connect FunctionThe electrical cross-connect function of the ZXWMM920 system is divided into centralizedelectrical cross-connect and distributed electrical cross-connect.

Centralized Electrical cross-connectBy using a cross-connect board and the backplane together, the centralized electricalcross-connect function implements flexible, time-slot cross-connect scheduling oftime-slot frames on the backplane. After the scheduling, one or one group of time-slotframes are demultiplexed on the service board to restore the service. The centralizedelectrical cross-connect system is based on synchronous time division scheduling, whichis applicable to large-scale scheduling systems. The centralized electrical cross-connectsystem has the following features:

l The cross-connect capacity is 0.8 TB, 1.6 TB, and 3.2 TB.l The cross-connect granularities are ODU0, ODU1, ODU2 and ODU3.l This function cross–connects services to different wavelengths and directions.l This function supports the access of 100M to 1.25G, FE/GE/10GE/40GE/100GE,

STM-1/STM-4/STM-16/STM-64/STM-256, FC400/800, FC200/400/800, and ODUk(where k = 0/1/2/2e/3/3e1/3e2) services.

l As an unblocked network, the cross-connect network supports broadcasting andEthernet clock-transparent transmission functions.

2-3



Distributed Electrical cross-connectBy using a backplane, the distributed electrical cross-connect function implementscross-connect scheduling of frames. After the scheduling, the frame is demultiplexedon the service board in the distributed cross-connect group to restore the service. Thegranularity of the distributed electrical cross-connect system is fine, and the configurationmode is flexible. The distributed electrical cross-connect system has the followingfeatures:

l A single subrack can be configured with up to six distributed cross-connect groups.The cross-connect capacity and the access capacity of each group are 80 GB.

l The cross-connect granularities are ODU0/ODU1.l This function implements access to the service with a rate of 100 Mbit/s to 4.25 Gbit/s

through board combinations.

2.1.8 RPOA TechnologyThe ZXWM M920 system uses the Remotely Pumped Optical Amplifier (RPOA)technology, which is an ultra-long-distance transmission technology.

In the RPOA system, a segment of Erbium-Doped Fiber (EDF) is inserted in transmissionoptical cables, which provides pumped light at a far-end site to amplify optical signals.

The RPOA system was developed to implement ultra-long, single-span transmission whenno power supply is available in the system.

It usually applies in the following cases:

l No power supply is available, or regenerator sites cannot be established when opticalcables cross over straits or adjacent seas, or pass through depopulated areas (suchas deserts, marshes and forests).

l The construction and maintenance of regenerator sites is difficult in remote areas dueto territorial limits.

RPOA supports the following applications:

l Unidirectional pump application through the same fiberl Unidirectional pump application through different fibersl Bidirectional pump application through two fibers

2.2 Upgrade and Maintenance CharacteristicsMaster and Slave SubracksThe ZXWM M920 system supports the master/slave subrack installation.

One Network Element (NE) of the equipment is installed in only one master subrack. Themaster subrack can support multiple slave subracks. For the details of slave subrackssupported by a single master subrack in the ZXWM M920 system, refer to Table 2-2.

2-4


Chapter 2 Product Characteristics

Table 2-2 Maximum Number of Slave Subracks for a Single Master Subrack

Subrack Type Number of Master Subracks Maximum Number of Slave Subracks

CX20 1 15

CX30 1 15

CX50 1 15

NX4 1 15

DX41 1 15

CX51 1 15

Supervisory Channel CompatibilityThe optical and electrical supervisory channels of the ZXWM M920 system can beconnected to and communicate with those of other OTN equipment.

Smooth Expansion and ScalabilityThe ZXWM M920 system has the following smooth capacity expansion and scalability:

l A ZXWM M920 system transmitting 100 Gbit/s, 40 Gbit/s, 10 Gbit/s and 2.5 Gbit/sservices can be updated to a 100 Gbit/s system.

l A ZXWM M920 system has an architecture that can be updated to a 192– channelsystem.

Online UpgradeThe ZXWM M920 system supports online upgrades as follows:

l Online upgrade of the network-element-management software and embeddedsoftware of each board in the ZXWM M920 system without traffic interruption

l Online upgrade a system transmitting less than 96 channels to a 96–channel system.

Pluggable Optical ModuleFor service signals at the rate of 40Gbit/s (STM-256/OTU3), the CFP +MSA300PIN opticalmodules are supported.

For service signals at the rate of 10 Gbit/s (STM-64/OC-192/10GE/OTU2), 10–GigabitSmall Form-Fator Pluggable optical modules (XFP) and SFP+ optical modules aresupported.

For service signals with the rate of 2.5 Gbit/s or below, the optical interfaces at the clientside support Small Form-Factor Pluggable optical modules (SFP).

Pluggable-optical modules support the position-detection for optical modules.

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2-6


Chapter 3System FunctionsTable of Contents

Line Transmission Function........................................................................................3-1Automatic Power Optimization Function .....................................................................3-5IWF Function..............................................................................................................3-6Wavelength Tunable Function ....................................................................................3-6Performance Monitoring Function...............................................................................3-7Chromatic Dispersion Compensation..........................................................................3-8Service Functions.......................................................................................................3-8Communication and Supervision Function................................................................3-10Alarm Monitoring Function........................................................................................3-12Protection Functions.................................................................................................3-13Clock Management Function ....................................................................................3-20Clock Time Synchronization Function.......................................................................3-20

3.1 Line Transmission Function

3.1.1 Transmission Capacity

Wavelength CapacityThe ZXWM M920 system can be configured as a transmission system with a maximumof 96 channels. The wavelength capacity of each channel can reach a maximum of 100Gbit/s.

Channel RateThe ZXWMM920 system supports single-channel rates at 100 Gbit/s, 40 Gbit/s, 10 Gbit/s,and 2.5 Gbit/s.

Channel SpacingsThe ZXWM M920 system uses the Dense Wavelength Division Multiplexing (DWDM)technology. It supports channel spacings of 50 GHz and 100 GHz.

3.1.2 Channel RateThe ZXWMM920 system supports single-channel rates at 100 Gbit/s, 40 Gbit/s, 10 Gbit/s,and 2.5 Gbit/s.

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3.1.3 Channel SpacingsThe ZXWM M920 system uses the Dense Wavelength Division Multiplexing (DWDM)technology. It supports channel spacings of 50 GHz and 100 GHz. In a 10 G/100 G hybridtransmission system, guard bands may be needed if the transmission distance is long.

3.1.4 Transmission System CodesThe ZXWM M920 system is classified into the following systems:l 40–channel system, at 2.5 Gbit/sl 40/48–channel system, at 10 Gbit/sl 80/96–channel system, at 10 Gbit/sl 40/48–channel system, at 40 Gbit/sl 40/48–channel system, at 100 Gbit/sl 80/96–channel system, at 40 Gbit/sl 80/96–channel system, at 100 Gbit/s

For descriptions of the above transmission systems, refer to Table 3-1, Table 3-2, Table3-3, Table 3-4, Table 3-5, Table 3-6, Table 3-7, Table 3-8, and Table 3-9.

Table 3-1 Transmission System at 10×2.5 Gbit/s

Transmission Code Cross-Segment Loss (dB) Target Distance (km)

1×36 1×144

2×33 2×132

3×31 3×124

-FEC (OSNR>20dB)

10×23 10×92

1×41 1×164

2×38 2×152

3×36 3×144

FEC-RAMAN (OSNR>15dB)

20×25 20×100

1×41 1×180

2×42 2×168

3×40 3×160

FEC+RAMAN

(OSNR>15dB)

20×28 20×112

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Chapter 3 System Functions

Table 3-2 Transmission Codes Supported by the 40/48×10 Gbit/s System

Transmission CodePattern

Cross-Segment Loss(dB)

Target Distance (km) Remark

1×61 1×244 RPOA, 40×10 Gbit/s

1×49 1×196 DRA, 40×10 Gbit/s

1×57 1×228 RPOA, 48×10 Gbit/s

1×48 1×192 DRA, 48×10 Gbit/s

30×22 30×88 -

AFEC NRZ

12×30 12×120 -

1×64 1×256 RPOA, 40×10 Gbit/s

1×52 1×208 DRA, 40×10 Gbit/s

1×60 1×240 RPOA, 48×10 Gbit/s

1×51 1×204 DRA, 48×10 Gbit/s

50×22 50×88 -

AFEC RZ

18×30 18×120 -





1×45 1×180 DRA, 80×10 Gbit/s

1×44 1×176 DRA, 96×10 Gbit/s

20×22 20×88 -

AFEC NRZ

8×30 8×120 -

1×48 1×192 DRA, 80×10 Gbit/s

1×47 1×188 DRA, 96×10 Gbit/s

30×22 30×88 -

AFEC RZ

12×30 12×120 -

3-3







1×47 1×188 DRA, 40×40 Gbit/s

1×46 1×184 DRA, 48×40 Gbit/s

22×22 22×88 -

5×30 5×120 -

AFEC DPSK

12×30 12×120 DRA





1×44 1×176 DRA, 80×40 Gbit/s

1×43 1×172 DRA, 96×40 Gbit/s

16×22 16×88 -

3×30 3×120 -

AFEC DPSK

6×30 6×120 DRA

Table 3-6 Transmission Codes Supported by the 80×100 Gbit/s System (G.652 + DCM)




1x45 1x180 DRA, 80x100Gbit/s

16x22 16x88 -

4x30 4x120 -

SD+FEC+PM-QPSK

7x30 7x120 DRA

Table 3-7 Transmission Codes Supported by the 80×100 Gbit/s System (G.652 - DCM)




1x45 1x180 DRA, 80x100Gbit/s

20x22 20x88 -

4x30 4x120 -

SD+FEC+PM-QPSK

7x30 7x120 DRA

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Table 3-8 Transmission Codes Supported by the 80×100 Gbit/s System (G.655 + DCM)




1x45 1x180 DRA, 80x100Gbit/s

10x22 10x88 -

3x30 3x120 -

SD+FEC+PM-QPSK

6x30 6x120 DRA

Table 3-9 Transmission Codes Supported by the 80×100 Gbit/s System (G.655 - DCM)




1x45 1x180 DRA, 80x100Gbit/s

12x22 12x88 -

3x30 3x120 -

SD+FEC+PM-QPSK

6x30 6x120 DRA

3.2 Automatic Power Optimization FunctionThe ZXWM M920 system uses the Automatic Power Optimization (APO) technology toprovide the automatic power management function at the OMS layer and OCH layer.

l OMS power management: to establish and maintain the optimal status of aggregateoptical power at the OMS layer.

l OCH power management: to establish and maintain the equalization of optical powerat the OCH layer.

3.2.1 OMS Power ManagementThe power management at the OMS layer is based on the power management domain.A power management domain is a multiplex section, that is, the Optical Multiplex Section(OMS) between two Optical Terminal Multiplexers (OTMs) , two Fixed Optical Add/DropMultiplexers (FOADMs) or Reconfigurable Optical Add/Drop Multiplexer (ROADMs).

The OMS power management function ensures that the difference between gains andcorresponding line losses in the same multiplex section is constant.

In an actual optical channel, when the difference between its gain and line loss meets thetriggering condition specified by the power management function, the power optimizationwill start. When the gain-loss difference reaches a value meeting the power requirement,the power optimization will end.

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The OMS power management function can only be implemented with the cooperation ofcertain boards and the EMS.

3.2.2 OCH Power ManagementThe ZXWMM920 system provides the power management function at the Optical Channel(OCH) layer. The OCH layer is the line side of the optical transponder unit, which connectsvarious signals ( PDH, SDH, and ATM).

There are two types of OCH power management.

l Fixed power compensation

A fixed equalization filter in an Erbium-Doped Fiber Amplifier (EDFA) is used to ensurethe flatness of gain spectrum.

l Dynamic channel power management

Dynamic gain equalization technology and power pre-equalization technology areused to adjust the optical power of each channel to guarantee the optical powerequalization of each channel at the optical receiving end.

3.3 IWF FunctionThe frequency drift has little impact on a DWDM system with channel spacing at 100GHz. But it has an impact on a DWDM system reliability with higher channel rate andless channel spacing, such as an 80/96 channel system with channel spacing at 50 GHz.

The ZXWM M920 system provides two modes to ensure the system reliability.

l The systemwith 100GHz channel spacing uses automatic power control, temperaturefeedback, and internal wavelength feedback, which are implemented by opticaltransponder boards.

l The system with 50 GHz channel spacing uses internal wavelength feedback andexternal wavelength feedback, which improves stability and accuracy of wavelengthcontrol.

à Internal wavelength feedback: It is implemented by optical transponder boards.

à External wavelength feedback: It is implemented by the Integrated WavelengthFeedback (IWF) function. The IWF function uses integrated detection andordered adjustment to implement the wavelength feedback control. OWMboards, OMU boards, OTU boards, SNP boards, and EMS work together toimplement the IWF function.

3.4 Wavelength Tunable FunctionTraditional DWDM systems use fixed wavelength lasers as light sources, which onlyoutput fixed wavelengths complying with ITU-T G.694.1 recommendation. Fixedwavelength lasers cannot be fully utilized when they are used as standby light sources,

3-6



which causes the operation costs. The development of light source technology uses atunable wavelength laser to meet the requirements for multi-wavelength tuning.

The tunable wavelength laser refers to a laser module that can be controlled to outputdifferent wavelengths in a certain bandwidth. The channel quantity and channel spacingof the output wavelengths meet the specifications of ITU-T G.694.1. With the applicationof tunable wavelength lasers, wavelengths can be selected dynamically for signals in aDWDM system according to the actual application of wavelengths. Especially when thesystem uses standby light sources, using tunable wavelength lasers can improve theutilization ratio of wavelengths.

Some service boards of the ZXWM M920system support both fixed wavelength outputand tunable wavelength output. Table 3-10 lists the boards supporting wavelength tuningfunction and their tuning ranges (relationship among operating band, channel quantity andchannel spacing).

Table 3-10 Boards Supporting the Wavelength Tunable Function

Board Type Operating Band Channel Quantity @Channel Spacing

100 G board (with FEC or AFEC)

TS4/CS4 Full C band 40 CH@100 GHz

80/96 CH@50 GHz


TD2C/TS2C/LS3/LO2/L-

Q2/MQA1/MQA2

Full C band 40 CH@100 GHz

80/96 CH@50 GHz


EOTU10G/EOTU10GB/

SOTU10G/SRM41/

LO2/FCA/FCAG

Full C band 40 CH@100 GHz

80/96 CH@50 GHz

2.5 G board (with FEC)

SOTU2.5G C band 4/8/16CH@100 GHz

(Continuous wavelengths)

2.5 G board (without FEC)

SRM42 C band 4/8/16CH@100 GHz

(Continuous wavelengths)

3.5 Performance Monitoring Functionl The ZXWM M920 system provides an optical performance monitoring unit. This unit

is responsible for measuring parameters of each optical channel, including the opticalpower, central wavelength and Optical Signal-Noise Ratio (OSNR), and sending thesedata to the EMS, in which users can view the performance data in a list or in a graph.

3-7



l The optical transponder unit supports performance monitoring and overheadprocessing function. It can locate the faults and fault types according to the followingaccess signals:

à For OTN signals: detects performance and alarm messages, including LossOf Frame (LOF) alarm, Bit Interleaved Parity (BIP-8), the overhead Trail TraceIdentifier (TTI), corrected bit error count, uncorrectable frame count, OTUk-AIS,ODUk-AIS, ODUk-OCI, ODUk-LCK, PM-BIP8, ODUk-PT.

à For SDH signals: monitors RS_BBE(B1) and J0 bytes.

à For GE signals: monitors the packet error count, packet error ratio, and GenericFraming Procedure (GFP) performance.

l The boards on the main optical path use the power collection and monitoringtechnology with great dynamic range and high accuracy. With the technology, thepower measurement error is less than 1 dB and the system performance can be trulyreflected.

3.6 Chromatic Dispersion CompensationFor the ZXWM M920 system used for 2.5 G-signal transmission, the dispersion toleranceis 12800 ps (640 km). For the ZXWMM920 system used for 10 G-signal transmission, thedispersion tolerance is 400 ps/800 ps (20 km/40 km). If the transmission distance is greaterthan that mentioned above, the dispersion restriction should be taken into consideration.40G速率业务板内置可调色散补偿器（TDC），可以实现自适应色散补偿。

The ZXWM M920 system provides dispersion compensation modules in DCM plug-inboxes to compensate dispersion.

3.7 Service FunctionsService functions of ZXWM M920 system include three aspects: service access function,service convergence function, and wavelength add/drop function.

3.7.1 Service Access FunctionFor the services admittable by the ZXWM M920 system, refer to Table 3-11.

Table 3-11 Services Admittable by the ZXWM M920 System

Service Description

Synchronous Digital Hierarchy (SDH)

services

STM-1, STM-4, STM-16, STM-64, STM-256, OTU3,

OTU3u, OTU3e, and OTU3f

Plesiochronous Digital Hierarchy

(PDH) Services

E3 and E4

Synchronous Optical Network (SONET

services

OC-3, OC-12, OC-48, OC-192, and OC-768

3-8



Service Description

Asynchronous Transfer Mode (ATM

services or Packet Over SONET/SDH

(POS) services

VC4, VC4-4c, and VC4-16c

Ethernet services FE, GE, 10GE, 40GE, 100GE

SAN services ESCON, FICON, FC1/2/4/8, 2GFC, 4GFC, 10GFC

Other services Digital Video Broadcasting (DVB), FDDI, Fiber Connection

(FICON), High Definition Television (HDTV), and Enterprise

System Connection (ESCON)

3.7.2 Service Convergence FunctionThe ZXWM M920 system can multiplex low-rate signals into high-rate signals, anddemultiplex high-rate signals into low-rate signals. For the descriptions of service boards,refer to Table 3-12.

Table 3-12 ZXWM M920 Service Aggregation Functions

Board Description

MQA1 Uses the data multiplexing technology to multiplex/demultiplex four channels of

ANY service signals into/from OTU1 signals.

MQA2 Uses the data multiplexing technology to multiplex/demultiplex four channels of

ANY service signals into/from OTU2 signals.

MJA Uses the data multiplexing technology to multiplex/demultiplex six channels of ANY

service signals into/from the backplane signals.

MOM2 Implements multiple services convergence to OTU boards. It cannot send services

to the backplane client side.

MQT3 Multiplexes/demultiplexes four channels of 10 G service signals (STM-64, OC-192,

10GbE or OTU2) into/from 40 G signals conforming to the ITU-T G.694.1.

ASMA Multiplexes/demultiplexes 24 channels of GE signals or one channel of 10 GE

signal into/from two channels of OTU2 signals.

SRM42 Multiplexes/demultiplexes four channels of STM-1 or STM-4 signals at each

tributary side into/from STM-16 signals at the aggregate side.

SRM41 Multiplexes/demultiplexes four channels of STM-16 signals at each tributary

side into/from STM-64 signals at the aggregate side. It supports SDH

synchronous convergence or OTN asynchronous convergence and FEC/AFEC

encoding/decoding. In addition, it complies with the ITU-T G.709.

FCA Multiplexes/demultiplexes two channels of 4G FC, four channels of 2G FC, or eight

channels of FC signals into/from OTU2 signals.

3-9



3.8 Communication and Supervision Function

3.8.1 Supervisory ChannelsThe monitoring subsystem of the ZXWM M920 system consists of SNP, CCP, SOSCBand SEIA1/SEIA2 boards. The monitoring system contains Optical Supervisory Channel(OSC) and Electric Supervisory Channel (ESC) to transmit the EMS and orderwireinformation.

l For the descriptions of optical supervisory channels, refer to Table 3-13.

Table 3-13 ZXWM M920 Optical Supervisory Channel

Item Capability

Monitoring rate 100 Mbit/s

Monitoring direction à The monitoring system supports 16 monitoring directions by in-

stalling four SOSCB boards, which can satisfy the monitoring

direction requirements.

à Each SOSCB board supports monitoring on four directions. Multiple

SOSCB boards can be installed to support more monitoring direc-

tions.

à When SOSCB boards serve for optical monitoring, slot 3 or slot 5 in

subrack 1 must be installed with an SOSCB board.

Compatibility The 100 M optical supervisory channels of the ZXWM M920 system can

communicate with the 100 M optical supervisory channels of the ZXMP

M820 system and ZXWM M920 system.

l For descriptions of electrical supervisory channels, refer to Table 3-14.

Table 3-14 ZXWM M920 Electrical Supervisory Channel

Item Capability

Monitoring rate The actual rate of an electrical supervisory channel depends on both

optical line rate and quantity of General Communication Channels

(GCCs). There are three groups of GCCs named as GCC0, GCC1, and

GCC2. When these three groups are used, the rate of an electrical

supervisory channel is as follows:

à If the line rate is 10 G, the electrical supervisory channel rate is 3.9

Mbit/s.

à If the line rate is 2.5 G, the electrical supervisory channel rate is 0.95

Mbit/s.

Monitoring direction The system supports 16 monitoring directions when enough service

boards supporting ESC are installed.

3-10



Item Capability

Compatibility The ESC electrical supervisory channel of the ZXWM M920 system can

communicate with the 100 M optical supervisory channels of the ZXMP

M820 system and the ZXWM M920 system.

3.8.2 Communication FunctionsFor the communication functions supported by the ZXWM M920 system, refer to Table3-15:

Table 3-15 Communication Functions of the ZXWM M920 System

CommunicationType

Channel/Inter-face

Description

Communication

between NEs and

the EMS

Qx interface SNP boards report alarms and performances of NEs and

subnetworks to the EMS through Qx interfaces and receive

commands and configurations sent from the EMS.

100 M

supervisory

channel

The monitoring system uses the 100 M Ethernet technology

to encapsulate ECC data, orderwire voice data, APS data,

and transparent user channel data into IP data packets, and

then transmits and exchanges the information in Ethernet

data frames.

The monitoring system uses the Open Shortest Path First

(OSPF) protocol. When the network topology is changed,

a new routing table is automatically aggregated and built,

which guarantees smooth monitoring channels.

If the network span is too large and the line loss is too

high, monitoring signals can be accessed to OTU boards

supporting continuous-rate services to support the in-band

monitoring.

Communication

among NEs

Electrical

supervisory

channel

Information carried by the ESC is transmitted by overheads

in OTN service signals to implement the communication

between two NEs in a single span. Service boards

supporting the ESC function are SOTU2.5G and SOTU10G.

Note:

An RJ45 interface on the SEIA1/SEIA2 board can serve as a Qx interface. It is referred toas J4 on the SEIA1 board front panel and J3 on the SEIA2 board front panel.

3-11



3.9 Alarm Monitoring Function

3.9.1 External Alarm Input and Output FunctionThe ZXWM M920 system supports the external alarm input and output functions.

l External alarm input function

Through the external alarm input interface on the SEIA1 board of the master subrack,the equipment uses optical coupling isolation signals to access alarms input by theexternal monitoring equipment, and displays the alarms on the EMS. The system canaccess up to 10 channels of external alarms to monitor alarms, including fans, doors,and temperature of external environment. The alarm type is configured in the EMS.

l External alarm output function

Through the alarm output, ring output, or cabinet indicator interface on the SEIA1board, the equipment outputs alarm signals to column-head cabinets in the equipmentroom, alarm indicator boards, or other monitoring units. The equipment alarm outputsignal and ring output signal are the optical coupling isolation signal or the level drivesignal.

3.9.2 Internal Alarm Monitoring FunctionThe ZXWM M920 system supports monitoring of communication alarms, equipmentalarms, and ambient environment alarms. These alarms are described in Table 3-16.

Table 3-16 Alarm List

Alarm Type Alarm Item

Communication

alarm

Optical power out-of-limit alarms, SDH service alarms, OTN service alarms,

out-of-lock alarms, service bit error alarms, Trace Identifier Mismatch (TIM)

alarms, high reflection power alarms, high reflectance alarms.

Equipment alarm l Temperature-related alarms

Temperature out-of-limit alarm of lasers, boards and modules.

l Current-related alarms

Over-current alarm of lasers and cooler, laser bias current out-of-limit alarm,

pump laser bias over-current alarm.

l Board-related alarms

Laser/pump life alarm, laser fault alarm, M-Z modulator bias voltage

out-of-limit alarm, module failure alarm, module communication fault

alarm, DSP operation alarm, high pump reflection power alarm, high pump

reflectance alarm, laser failure alarm, board out-of-position alarm, board

mounting alarm, and fan fault alarm.

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Alarm Type Alarm Item

Ambient

environment alarm

Fire alarm, temperature alarm, and equipment room alarm.

• This table only provides the alarm overview. Different boards have different alarms. For detailedinformation about alarms of each board, refer to the Unitrans ZXWM M920 (V1.10) Intelligent OpticalTransmission Platform Maintenance Manual (Volume II) Alarm and Performance .

• Communication alarms refer to the alarms directly affecting service layer. These alarms indicatecommunication signals have interruption or degradation on some layer. Equipment alarms refer tothe alarms directly caused by faults of equipment or internal parts of the boards. Ambient environmentalarms refer to the alarms on environment.

3.10 Protection Functions

3.10.1 SNP 1+1 Protection

Protection PrinciplesThe ZXWM M920 system is configured with two SNP boards (master/slave) to implementthe SNP 1＋1 hot backup function.

The slave SNP board does not send data but receives data. When the master SNPboard does not work normally (such as power-off, reset or faults), the slave SNP boardis automatically switched to the master SNP board.

Application CharacteristicsBoth of the SNP boards work at the same time and they can be switched manuallyor through EMS to ensure uninterrupted services, logical seamless upgrade ofcross-connection board, or seamless upgrade of cross-connect hardware.

SNP boards are the core boards for management and control in a ZXWM M920 system.The ZXWM M920 system provides 1+1 hot backup for SNP boards to implement theautomatic service switching in case of fault occurrence to ensure the system reliability.

The CLK, CCP, PWD, and PWE boards also support the 1+1 protection.

3.10.2 Cross-Connect Board 1+1/2:2/4:2 Protection

Protection PrincipleThe ZXWM M920 system supports 1+1, 2:2, and 4:2 protections. The cross-connectboards improve the system security and stability. For the ZXWM M920 systemcross-connect board protection principles, refer to Table 3-17.

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Table 3-17 ZXWM M920 Cross-Connect Board Protection

Protection Type ApplicableSubarck

Description

1+1 redundancy

protection

CX20 Two XCA boards are configured in a CX20 subrack to

implement the master/slave protection. The XCA boards

implement the 1+1 redundancy.

2:2 protection CX30 Four XCA boards are configured in a CX30 subrack to

implement the 2:2 protection. Two XCA boards are in

working status and the other two XCA boards are in

protection status.

4:2 pretection CX50/CX51 Six XCA boards are configured in a CX50/CX51 subrack

to implement the 4:2 protection. Four XCA boards are

in working status and the other two XCA boards are in

protection status.

Application FeaturesWhen a CX20 subrack is configured with two XCA boards, the two XCA boards implementthe 1+1 redundancy. If one of the two XCA boards is faulty, the service cross-connect isnot interrupted.

When a CX30 subrack is configured with four XCA boards, the four XCA boards implementthe 2:2 redundancy. If any two of the four XCA boards are faulty, the service cross-connectis not interrupted.

When the CX50/CX51 subrack is configured with six XCA boards, the six XCA boardsimplement the 4:2 redundancy. If any two of the four XCA boards are faulty, the servicecross-connect is not interrupted.

3.10.3 OMS 1+1 Protection

Protection PrincipleIn the OMS 1+1 protection, lines of each segment are protected in 1+1 mode. According tolocations of amplification boards, OMS 1+1 protection can be classified into amplificationboard shared configuration mode and amplification board redundancy configuration mode.For the protection on a group of services, see Figure 3-1 and Figure 3-2.

3-14



Figure 3-1 OMS 1+1 Protection (Amplification Board Shared Configuration Mode)

Figure 3-2 OMS 1+1 Protection (Amplification Board Redundancy Configuration Mode)

Application Featuresl SOP boards monitor the main optical path. If the switching conditions are met, the

optical switch of SOP boards performs the protection switching.l SOP board has two types: SOP1 and SOP2.

à An SOP1 board can be used to protect a pair of bidirectional service signals.In OMS 1+1 protection, the quantity of SOP1 boards configured should beconsistent with that of multiplex sections to be protected.

à An SOP2 board can be used to protect two pairs of bidirectional service signals.In OMS 1+1 protection, the quantity of SOP2 boards configured should beconsistent with half of the quantity of multiplex sections to be protected.

3-15



3.10.4 OCH 1+1 Protection

Protection PrincipleAn SOP board implements the OCH 1+1 protection by selecting the best of the twotransmitted services. Bidirectional service signals are protected by an OTU boardfor working channel and an OTU board for protection channel in each direction. Thisconfiguration mode is also called "OTU redundancy configuration mode".

At the transmitting end, the signal is divided into two signals by a coupler in the SOPboard. Then, the two signals are respectively sent to two transmitter OTUs, occupying twodifferent channels for transmission.

At the receiving end, the selection circuit in the SOP board selects the better signal fromtwo signals. The protection mode is shown in Figure 3-3 (The protection for a group ofservices is used as an example).

Figure 3-3 OCH 1+1 Protection (Chain Network)

ApplicationAn SOP1 board can protect one group of bidirectional service signals. In OCH 1+1protection, the quantity of SOP1 boards configured should be consistent with the quantityof channels to be protected. An SOP2 board can protect two groups of bidirectionalservice signals. In OCH 1+1 protection, the quantity of SOP2 boards configured shouldbe half of the quantity of channels to be protected.

Both the protection channel and working channel are carried by the same fiber. Therefore,the OCH 1+1 protection in a chain network can be used for equipment, but not routes.

3.10.5 Two-Fiber Bidirectional OCH Shared Protection

Protection PrincipleIn a two-fiber bidirectional OCH shared protection ring, the wavelength λ1 in the outer ringworks as the working channel while λ1 in the inner ring works as the protection channel.

3-16



Wavelengths of multiple unidirectional services can be reused in different spans in theworking channel, and the protection channel shares all the services in the working channel.

As shown in Figure 3-4, when a span is faulty, the services through this span are damaged.As a result, the transmitting end executes the switching, and services are transmitted tothe protection route. The services at the receiving end are received through the protectionroute.

Figure 3-4 Schematic Diagram of Two-Fiber Bidirectional OCH Shared Protection

Application FeaturesThe system uses the SOPCS board to control the the add channels by controlling theaccess switch, which ensures that multiple services in the same working channel will notconflict in the protection channel.

3.10.6 Chain Network-Based Electrical Layer 1+1 WavelengthProtection

The purpose of chain network-based electrical layer 1+1 wavelength protection is toprotect traffic (4×2.5G) at the wavelength level. Cross connect subsystem boards serve toimplement electrical layer 1+1 wavelength protection. Figure 3-5 illustrates the electricallayer 1+1 wavelength protection configuration at the line side.

3-17



Figure 3-5 Electrical Layer 1+1 Wavelength Protection Configuration at Line Side

For the system configurations, refer to Table 3-18.

Table 3-18 Description of Electrical Layer 1+1 Wavelength Protection Configuration

Location Description

Client side The protection granularity is the wavelength channel at line side. There is no

special requirement for the service access mode at the client side. Client-side

services are implemented by CO2, CQ2, CS3, CD3, and CS4 boards.

Line side at the

transmit end

Multiple channels of client service signals are duplicated into two same groups of

signals by the XCA board and these two groups of signals are then forwarded to

the corresponding line-side boards, typically to two different LO2, LQ2, LS3, and

LS4 boards at the line side. This configuration is equivalent to dual service boards

configured at the line side in case of 1+1 service protection at the client side.

Intermediate line At the intermediate node that a service travels by, the cross connect unit can

change the wavelength of the service.

Line side at

receiving end

Two independent LO2, LQ2, LS3, and LS4 boards are respectively configured as

working and protection boards. The working path and the protection path may be

path-correlated (sharing fiber/sharing cable) or path-uncorrelated (respectively

corresponding to the long path and the short path in two directions in a ring

network).

APS controller The SNP board serves as the APS controller to execute switching and restoration

commands to the APS executor board according to the information collected by

the APS detector board and protection protocols.

APS detector Line-side LO2, LQ2, LS3, and LS4 boards at the receiving end respectively act as

the APS detector boards for the working path and protection path.

APS executor The XCA board serves as the APS executor. APS controller board executes

APS commands to both the active and standby XCA boards to implement traffic

protection switching.

Compared with optical layer 1+1 OCH protection, the electrical layer 1+1 wavelengthprotection has the following advantage and disadvantage:

3-18



l Advantage: This protection mode can support the centralized protection of multipleservices bundled in the same wavelength channel.

l Disadvantage: The protection switching cannot be triggered by faults generated in asingle sub-wavelength service, that is, it cannot support the protection based on theservice granularity.

3.10.7 Ring Network-based Electrical Layer Two-Fiber BidirectionalChannel Shared Protection

The two-fiber bidirectional channel shared protection based on the ring network atthe electrical layer supports both the protection based on wavelength granularity orsub-wavelength (service) granularity. Its protection principle is similar to that of opticallayer two-fiber bidirectional channel shared protection. The optical layer two-fiberbidirectional channel shared protection is implemented by the OPCS board, while theelectrical layer one is implemented by cross-connect subsystem boards. The combinationof cross connect subsystem boards provides the same logical functions as the OPCSboard. Figure 3-6 shows the principle of electrical layer two-fiber channel sharedprotection.

Figure 3-6 Electrical Layer Two-Fiber Bidirectional Channel Shared Ring NetworkProtection Configuration

l Relationship between working path and protection path

The working path and the protection path are uncorrelated in electrical layer two-fiberbidirectional channel shared ring. They respectively correspond to the short path andthe long path in the ring network.

l Protocol execution

It is necessary to execute the APS protocol in electrical layer two-fiber bidirectionalchannel shared ring.

à APS controller: The SNP board serves as the APS controller.

à APS detector: Line-side LO2, LQ2, LS3, and LS4 boards at the receivingend respectively act as the APS detector boards for the working path and the

3-19



protection path. Client-side CO2, CQ2, CS3, CD3, and CS4 boards act as thedetector board for service signals (STM-1/4/16), and the detection signals areshared by working and protection channels.

à APS executor: The SNP board sends APS commands to both the active andstandby XCA boards in the cross-connect subsystem to implement the trafficprotection switching.

l Features

à Advantage: The protection granularity is flexible, which can be a sub-wavelengthtraffic or aggregate wavelength signal. Either line fault or service signal fault cantrigger protection switching. The electrical layer two-fiber bidirectional channelshared protection can implement cross-span protection with protection channelshared on the whole ring.

à Disadvantage: The implementation mechanism of this protection mode iscomplex.

3.10.8 Protection Capability for EMS ChannelThe ZXWMM920 system can configure EMS channel standby route. Standby routes referto Ethernet routes connecting SNP boards in NEs and the EMS computer. In practice,network interfaces of standby routes can be connected to SEIA1/SEIA2 boards to providestandby routes for monitoring channels. When the optical monitoring channel fails to work,SNP boards can ensure the transmission and exchange of monitoring messages throughthe standby route.

3.11 Clock Management FunctionThe ZXWM M920 system uses a separate clock board CLK to support the clock transferfunction and generate the system clock. The CLK board supports 1+1 backup, maintainssynchronization betweenmaster/slave output clocks and the system clock, and cooperateswith the system to implement seamless switching between the master clock board and theslave clock board.

The external clock can be accessed from the clock panel or through an external clockinterface board.

l The ZXWM M920 system can extract clock sources from service boards, and usethem as the system clock sources.

l CLK clock boards support the three modes specified by ITU-T G.813: free running,holdover, and automatic lock. The three modes can be configured in the EMS.

3.12 Clock Time Synchronization FunctionOTN设备支持时钟同步、时间同步传送功能。

3-20



l 时钟同步：即频率同步，指信号之间在频率或相位上保持某种严格的对应关系。最普通的表现形式是频率相同，相差恒定，以维持通讯网中相关设备的稳定运行。

l 时间同步：指信号之间的频率和相位均保持相同，因此时间同步一般包括时钟同步。IEEE 1588V2协议是应用较广的时间同步协议。

The ZXWM M920 clock synchronization function supports transmitting clocksynchronization signals among subracks and networks. It has the following features:

l Supports the clock synchronization and the time synchronization to meet therequirements for time synchronization accuracy.

l The physical-layer synchronization mechanism extracts clock from the serialbit stream in physical channel of transmission link to implement the frequencysynchronization.

l The time synchronization complies with the IEEE 1588 V2 protocol. The ZXWMM920system provides an out-of-band time synchronization interface between 1pps+TODand FE to implement the out-of-band time transmission.

l Uses the Best Master Clock (BMC) algorithm to select a clock. The BMC algorithmcompares the descriptions of two or more clocks, and selects the better one. TheOrdinary Clock (OC), Boundary Clock (BC ) , and Transparent Clock (TC) aresupported.

l Supports processing the Synchronization Status Message (SSM) and the delaycompensation.

l Supports the protection switch of active/standby clock sources.

Clock SynchronizationOTN网络需要传递的常见时钟有三种：2M BITS时钟、SDH业务时钟以及同步以太网时钟。

中兴通讯OTN设备支持采用以下两种方式传递时钟。

l 带内时钟方式：通过业务通道传递时钟方式。l 带外时钟方式：通过OSC光监控通道传递时钟方式。

以上两种时钟传递方式的说明参见Table 3-19。

Table 3-19 时时时钟钟钟传传传递递递方方方式式式一一一览览览

时时时钟钟钟传传传递递递方方方式式式实实实现现现方方方案案案

方案一：采用CLK单板以及业务板共同实现对时钟的提取、管理、传送功能，常用于传递2M BITS时钟、SDH时钟。该方案需要在网管上对CLK单板和业务板进行时钟配置。

带内时钟方式

方案二：利用支持频率透传的映射方式或者同步映射的业务板实现传递时钟，常用于传递GE、10GE的同步以太网时钟。例如，SOUT10G单板支持10GE—ODU2e同步映射方式，可通过10GE—ODU2e的同步映射过程来传递时钟信息。该方案在网管上不需要进行时钟配置，只需要在业务板之间开通一条业务通道，且该业务映射方式为支持频率透传的映射方式或者同步映射方式即可。

3-21



时时时钟钟钟传传传递递递方方方式式式实实实现现现方方方案案案

带外时钟方式带外时钟方式在中兴通讯OTN设备上采用配置SOSCB单板+TIS单板方案实现。该方案需要在网管上对SOSCB单板和TIS单板进行时钟配置。

Time Synchronization中兴通讯OTN设备支持通过OSC光监控通道传送IEEE 1588V2时间信息，即通过带外时间方式传递。

带外时间方式在中兴通讯OTN设备上采用配置SOSCB单板+TIS单板方案实现。在需要输入/输出时间信息的网元配置：SOSCB单板+TIS单板，其它网元配置SOSCB单板。

3-22


Chapter 4Hardware ArchitectureTable of Contents

Cabinet ......................................................................................................................4-1Board .........................................................................................................................4-2

4.1 CabinetCabinet TypeThe ZXWM M920 system uses a ZTE cabinet with a single front door, which complieswith European Telecommunication Standard Institute (ETSI) standards. For the cabinetappearance, see Figure 4-1.

Figure 4-1 ZXWM M920 Cabinet

Cabinet ConfigurationFor the configurations of the ZXWM M920 cabinet, refer to Table 4-1.

4-1



Table 4-1 ZXWM M920 Cabinet Configuration

Quantity

Subrack Module

CabinetDimensions(H×W×D)mm

PowerDistributionBox

NX4/DX41 CX20/C-X21

CX30/CX31

CX50/C-X51

CX4 DCMPlug-inBox

1 3 0 0 0 0 1

1 0 3 0 0 0 1

1 0 0 -1 0 0 1

1 0 0 0 1 0 1

2000 × 600 ×

300

1 0 0 0 0 3 1

1 4 0 0 0 0 1

1 0 4 0 0 0 1

1 0 0 1 0 0 1

1 0 0 0 1 0 1

2200 × 600 ×

300

1 0 0 0 0 4 1

1 4 0 0 0 0 1

1 0 4 0 0 0 1

1 0 0 1 0 0 1

1 0 0 0 2 0 1

2600 × 600 ×

300

1 0 0 0 0 1 1

Note:l The configuration of the subrack depends on the actual needs.Table 4-1 lists the

maximum numbers of the same type subracks.l The Dispersion Compensation Module (DCM) plug-in box is optional. Table 4-1 lists

the recommended numbers of DCMs.l You can install devices of other manufacturers in the cabinet, such as routers. The

outlines and dimensions of the devices should meet the installation requirements forZTE transmission equipment cabinets.

4.2 BoardFor boards used in each ZXWM M920 subsystem, refer to Table 4-2.

4-2


Chapter 4 Hardware Architecture

Table 4-2 Subsystem Configurations

Subsystem Board/Module

Service access and

convergence subsystem

EOTU10G, EOTU10GB, SOTU10G, TST3, SOTU2.5G, MQT3,

ASMA, SRM41/42, FCA/FCAG, ASMB, TD2C, TS2C, TS4, MQA1,

MQA2, MJA, MOM2

Mux/DeMux subsystem OMU, ODU, ODUB,OCI, SSDM, VMUX, VMUXB, SOAD, SOGMD,

WBU, WSU, WBM, PDU,

Optical amplification

subsystem

SEOBA, SEOPA, SEOLA, EONA, EOBAH, LAC, DRA

Monitoring subsystem SNP, SCC, SEIA1/SEIA2, CCP, SOSCB, TIS, ETI, EIC

Protection subsystem SOP, OMCP, SOPMS, SOPCS

Cross-connect subsystem XCA, CH1, LO2, CO2, LQ2, LD2B, CQ2, CLK, CS3, CD3, LS3,

CS4, LS4, EHG1, EQG2

Optical layer management

subsystem

OWM, OPM, EOPM, EOWM

Power supply subsystem PWD, FCC, SPWA, SFANA, PWE

RPOA subsystem RPU, RGU

For the ZXWM M920 system architecture on the basis of functional modules, see Figure4-2. The ZXWM M920 system is composed of nine functional subsystems. They areindependent from each other but operate in coordination.

Figure 4-2 ZXWM M920 System Architecture

4-3



Note:

In application, functional modules on each site should be configured as required.

The service flows between functional subsystems are described as follows:

l After service signals are received in the service access and convergence subsystem,they are sent to the Mux/Demux subsystem for multiplexing. The multiplexed signalsare then sent to the optical amplifier subsystem for amplification. The amplified signalsare transmitted to the optical-fiber line.

After service signals are received in the service access and convergence subsystem,they are sent to the optical amplifier subsystem for amplification. The amplifiedoptical signals are then sent to the Mux/Demux subsystem for demultiplexing. Thedemultiplexed signals are sent to the service boards.

l To implement the service protection, the protection subsystem must be configured.The protection subsystem can be located before or after the service access andconvergence subsystem.

l To switch services, the cross-connect subsystem must be configured. Client servicesignals are accessed, switched, and aggregated at the cross-connect system, andthen sent to the optical-fiber line.

l To implement the ultra-long-haul single-span transmission, the RPOA subsystemmust be configured after the optical amplifier subsystem.

4-4


Chapter 5Software ArchitectureTable of Contents

Software Architecture Overview .................................................................................5-1EMS Software ............................................................................................................5-1NE Control and Processing Software..........................................................................5-3Board Software ..........................................................................................................5-4Communication Protocols and Interfaces ...................................................................5-4

5.1 Software Architecture OverviewThe ZXWM M920 software architecture consists of a board software, NE control andprocessing software, and EMS software. They are respectively operating on boards,NE control processor boards, and EMS to implement the management and control forboards, NEs and the whole network.

According to the hierarchical design, each layer of the ZXWM M920 software supportsspecific functions and provides services for the upper layer. The software architecture isshown in Figure 5-1.

Figure 5-1 ZXWM M920 Software Architecture

5.2 EMS SoftwareThe ZXWM M920 system uses the U3 EMS software to manage and monitor NEs.The network management software supports the fault management, performancemanagement, security management, configuration management, maintenancemanagement, and system management.

5-1



The EMS structure is shown in Figure 5-2.

Figure 5-2 EMS Structure

l Manager

It is also referred to as Server. Compared to Graphical User Interface (GUI), Managerworks as a Server. Through Qx interfaces, Manager sends management commandsto the corresponding NE control and processing software, receives messages fromNE control and processing software, and saves all the network management dataincluding the basic data of system management, configuration management, andalarm maintenance in the database. Manager only saves management data in thelocal network.

l Graphical User Interface (GUI)

It is also referred to as Client. The GUI provides graphical interfaces for users. Theusers can implement configuration management, fault management, performancemanagement, security management, maintenance management and systemmanagement in the GUI. The GUI does not save dynamic network managementdata, which are retrieved from Database by Manager when the users use the GUI.

l Database

The Database stores data about information query, configuration and alarm forinterfaces and management functional modules. It also implements the processingof data consistency.

5-2


Chapter 5 Software Architecture

5.3 NE Control and Processing SoftwareNE control and processing software is located on the Smart Node Processor (SNP) boardto manage, monitor and control the board operation status in the NE. As a communicationservice unit between the network management system and boards, it implements controland management for NEs. For the functions supported by the NE control and processingsoftware, refer to Table 5-1:

Table 5-1 NE Control and Processing Software Functions

Serial No. Function

1 Configures boards during power-on initialization of the NEs.

2 Monitors alarm and performance status of the operating NE, receives EMS monitoring

and configuration commands from gateway NE through Error Check and Correction

(ECC) interfaces, and reports command results, NE alarms and performance status.

Gateway NEs are connected with the EMS through Ox interfaces.

3 Controls APS, APR and WASON.

The structure of the NE control and processing software is shown in. For the functionalmodules of the NE control and processing software, refer to Table 5-2:

Figure 5-3 Structure of the NE Control and Processing Software

Table 5-2 Functional Modules of the NE Control and Processing Software

Module Description

Embedded operation system

platform

The embedded operation system platform is responsible for public

resource management, and provides an application environment

independent from hardware.

Fault management module The fault management module collects and handles alarm.

Performance management

module

The performance management module collects and handles

performance events.

5-3



Module Description

Configuration management

module

The configuration management module handles configuration

requirements.

Master/slave switching module The master/slave switching module implements data

synchronization and switching between the master SNP and the

slave SNP boards to perform the 1+1 hot backup for SNP boards.

APS module The APS module implements protection switching function

according to the actual application of protection modes and the

equipment.

WASON module The WASON module controls boards to implement the WASON

function based on actual application of networks and the equipment.

APSD/APR module The APSD/APR module implements the APSD/APR function

according to the actual application of the equipment.

5.4 Board SoftwareThe board software operates on each board to manage, monitor and control the operationstatus of each board. It receives commands sent from the Network Element ManagementSystem (EMS) through an agent on the SNP board, and then responds and takes actionson the commands. It reports alarm and performance events of the board to the EMS.

The functions of board software include alarm and performance handling, configurationmanagement, communication management, board software online download, andfunctional circuits driven.

5.5 Communication Protocols and InterfacesFor interfaces of the ZXWMM920 software system and their corresponding communicationprotocols, refer to Table 5-3.

Table 5-3 ZXWM M920 Software System Interfaces

Interface Name Description

S interface It is the interface between the NE control and processing software and

the MCU, that is, the communication interface between the SNP board

and other boards.

5-4


Chapter 5 Software Architecture

Interface Name Description

Qx interface It is the interface between the NE control and processing software and the

Manager, that is, the interface between the SNP board and the computer

on which the EMS Server program operates. For the ZXWM M920 system,

Qx interface is located on the SEIA board. It complies with Transfer

Control Protocol (TCP)/Internet Protocol (IP) protocol, International

Telecommunication Union - Telecommunication Standardization Sector

(ITU-T) Q.811 and ITU-T Q.812 recommendations.

ECC interface It is the communication interface between NEs. The ECC interface uses

an optical monitoring channel for communication and supports the TCP/IP

protocol.

CTI interface It is the control interface in the NE, and implements APS, APR, and

WASON functions.

5-5




5-6


Chapter 6Technical SpecificationsTable of Contents

Requirements on Operating Wavelength ....................................................................6-1Service Access and Convergence Subsystem Specifications .....................................6-7Optical Mux/DeMux Subsystem Specifications ........................................................6-11Optical Amplification Subsystem Specifications .......................................................6-23Optical Layer Management Subsystem Specifications..............................................6-33Protection Subsystem Specifications........................................................................6-35Supervision Subsystem Specifications .....................................................................6-38RPOA Subsystem Specifications..............................................................................6-39DCM Technical Specifications ..................................................................................6-40Environment Specifications ......................................................................................6-42Electro Magnetic Compatibility Requirements...........................................................6-47Weight Power Consumption Dimensions ..................................................................6-48

6.1 Requirements on Operating Wavelength

6.1.1 Allocation of Continuous Wavelengthsl The spacing between wavelengths is 100 GHz when the ZXWM M920 system is

configured as a system with no more than 40 wavelengths in C band. Table 6-1 liststhe wavelengths allocated in a 40-channel system.

Table 6-1 Wavelength Allocation (40 Channels in C Band with Spacing at 100 GHz)

S/N Central Frequency(THz)

CentralWavelength (nm)


Central Wavelength(nm)

1 192.10 1560.61 21 194.10 1544.53

2 192.20 1559.79 22 194.20 1543.73

3 192.30 1558.98 23 194.30 1542.94

4 192.40 1558.17 24 194.40 1542.14

5 192.50 1557.36 25 194.50 1541.35

6 192.60 1556.55 26 194.60 1540.56

7 192.70 1555.75 27 194.70 1539.77

8 192.80 1554.94 28 194.80 1538.98

9 192.90 1554.13 29 194.90 1538.19

6-1







10 193.00 1553.33 30 195.00 1537.4

11 193.10 1552.52 31 195.10 1536.61

12 193.20 1551.72 32 195.20 1535.82

13 193.30 1550.92 33 195.30 1535.04

14 193.40 1550.12 34 195.40 1534.25

15 193.50 1549.32 35 195.50 1533.47

16 193.60 1548.51 36 195.60 1532.68

17 193.70 1547.72 37 195.70 1531.9

18 193.80 1546.92 38 195.80 1531.12

19 193.90 1546.12 39 195.90 1530.33

20 194.00 1545.32 40 196.00 1529.55

l The spacing between wavelengths is 50 GHz when the ZXWM M920 systemis configured as a system with 80 wavelengths in C band. Table 6-2 lists thewavelengths allocated in the 80-channel system.

Table 6-2 Wavelength Allocation (80 Channels in C Band with Spacing at 50 GHz)





1 196.05 1529.16 41 194.05 1544.92

2 196.00 1529.55 42 194.00 1545.32

3 195.95 1529.94 43 193.95 1545.72

4 195.90 1530.33 44 193.90 1546.12

5 195.85 1530.72 45 193.85 1546.52

6 195.80 1531.12 46 193.80 1546.92

7 195.75 1531.51 47 193.75 1547.32

8 195.70 1531.90 48 193.70 1547.72

9 195.65 1532.29 49 193.65 1548.11

10 195.60 1532.68 50 193.60 1548.51

11 195.55 1533.07 51 193.55 1548.91

12 195.50 1533.47 52 193.50 1549.32

13 195.45 1533.86 53 193.45 1549.72

14 195.40 1534.25 54 193.40 1550.12

15 195.35 1534.64 55 193.35 1550.52

6-2


Chapter 6 Technical Specifications





16 195.30 1535.04 56 193.30 1550.92

17 195.25 1535.43 57 193.25 1551.32

18 195.20 1535.82 58 193.20 1551.72

19 195.15 1536.22 59 193.15 1552.12

20 195.10 1536.61 60 193.10 1552.52

21 195.05 1537.00 61 193.05 1552.93

22 195.00 1537.4 62 193.00 1553.33

23 194.95 1537.79 63 192.95 1553.73

24 194.90 1538.19 64 192.90 1554.13

25 194.85 1538.58 65 192.85 1554.54

26 194.80 1538.98 66 192.80 1554.94

27 194.75 1539.37 67 192.75 1555.34

28 194.70 1539.77 68 192.70 1555.75

29 194.65 1540.16 69 192.65 1556.15

30 194.60 1540.56 70 192.60 1556.55

31 194.55 1540.95 71 192.55 1556.96

32 194.50 1541.35 72 192.50 1557.36

33 194.45 1541.75 73 192.45 1557.77

34 194.40 1542.14 74 192.40 1558.17

35 194.35 1542.54 75 192.35 1558.58

36 194.30 1542.94 76 192.30 1558.98

37 194.25 1543.33 77 192.25 1559.39

38 194.20 1543.73 78 192.20 1559.79

39 194.15 1544.13 79 192.15 1560.20

40 194.10 1544.53 80 192.10 1560.61

l The spacing between wavelengths is 100 GHz/50 GHz when the ZXWM M920system is configured as an extended C-band 48/96-channel system. Table 6-3 liststhe wavelengths allocated in such a system.

6-3



Table 6-3 Wavelength Allocation (48/96 Channels in Extended C Band with Spacing at 100 Ghz/50Ghz)

S/N Sub-Band

NominalCentralFrequency(THz)

Nominal CentralWavelength(nm)

S/N Sub-Band


NominalCentralWavelength(nm)

1 C1002 196.05 1529.16 49 C1002 193.65 1548.11

2 C1001 196.00 1529.55 50 C1001 193.60 1548.51

3 C1002 195.95 1529.94 51 C1002 193.55 1548.91

4 C1001 195.90 1530.33 52 C1001 193.50 1549.32

5 C1002 195.85 1530.72 53 C1002 193.45 1549.72

6 C1001 195.80 1531.12 54 C1001 193.40 1550.12

7 C1002 195.75 1531.51 55 C1002 193.35 1550.52

8 C1001 195.70 1531.9 56 C1001 193.30 1550.92

9 C1002 195.65 1532.29 57 C1002 193.25 1551.32

10 C1001 195.60 1532.68 58 C1001 193.20 1551.72

11 C1002 195.55 1533.07 59 C1002 193.15 1552.12

12 C1001 195.50 1533.47 60 C1001 193.10 1552.52

13 C1002 195.45 1533.86 61 C1002 193.05 1552.93

14 C1001 195.40 1534.25 62 C1001 193.00 1553.33

15 C1002 195.35 1534.64 63 C1002 192.95 1553.73

16 C1001 195.30 1535.04 64 C1001 192.90 1554.13

17 C1002 195.25 1535.43 65 C1002 192.85 1554.54

18 C1001 195.20 1535.82 66 C1001 192.80 1554.94

19 C1002 195.15 1536.22 67 C1002 192.75 1555.34

20 C1001 195.10 1536.61 68 C1001 192.70 1555.75

21 C1002 195.05 1537 69 C1002 192.65 1556.15

22 C1001 195.00 1537.4 70 C1001 192.60 1556.55

23 C1002 194.95 1537.79 71 C1002 192.55 1556.96

24 C1001 194.90 1538.19 72 C1001 192.50 1557.36

25 C1002 194.85 1538.58 73 C1002 192.45 1557.77

26 C1001 194.80 1538.98 74 C1001 192.40 1558.17

27 C1002 194.75 1539.37 75 C1002 192.35 1558.58

28 C1001 194.70 1539.77 76 C1001 192.30 1558.98

29 C1002 194.65 1540.16 77 C1002 192.25 1559.39

6-4



S/N Sub-Band


Nominal CentralWavelength(nm)

S/N Sub-Band


NominalCentralWavelength(nm)

30 C1001 194.60 1540.56 78 C1001 192.20 1559.79

31 C1002 194.55 1540.95 79 C1002 192.15 1560.2

32 C1001 194.50 1541.35 80 C1001 192.10 1560.61

33 C1002 194.45 1541.75 81 C1002 192.05 1561.02

34 C1001 194.40 1542.14 82 C1001 192.00 1561.42

35 C1002 194.35 1542.54 83 C1002 191.95 1561.83

36 C1001 194.30 1542.94 84 C1001 191.90 1562.24

37 C1002 194.25 1543.33 85 C1002 191.85 1562.64

38 C1001 194.20 1543.73 86 C1001 191.80 1563.05

39 C1002 194.15 1544.13 87 C1002 191.75 1563.46

40 C1001 194.10 1544.53 88 C1001 191.70 1563.87

41 C1002 194.05 1544.92 89 C1002 191.65 1564.27

42 C1001 194.00 1545.32 90 C1001 191.60 1564.68

43 C1002 193.95 1545.72 91 C1002 191.55 1565.09

44 C1001 193.90 1546.12 92 C1001 191.50 1565.5

45 C1002 193.85 1546.52 93 C1002 191.45 1565.91

46 C1001 193.80 1546.92 94 C1001 191.40 1566.32

47 C1002 193.75 1547.32 95 C1002 191.35 1566.73

48 C1001 193.70 1547.72 96 C1001 191.30 1567.14

• C1001 and C1002 respectively refers to the first and second sub-bands in the extended C band. Each sub-bandcontains 48 wavelengths with the spacing at 100 GHz.

6.1.2 Allocation of Uncontinuous WavelengthsWhen the Mux/DeMux board is used in the system for wavelength multiplexing anddemultiplexing, some wavelengths cannot be used due to the technical limitation offilters in the board. These wavelengths are called unavailable wavelengths or blackwavelengths.

In this case, the system works in C band at the spacing of 100 GHz. Although C bandincludes 40 wavelengths, only 32 uncontinuous wavelengths of them can be used,which are divided into four wavelength groups: red-red ribbon (RR), red-blue ribbon(RB), blue-red ribbon (BR) and blue-blue ribbon (BB) together. Each group includes 8wavelengths. We also call RR and RB together as red ribbon, BR and BB as blue ribbon.Figure 6-1 illustrates the allocation of these uncontinuous wavelengths.

6-5



Figure 6-1 Allocation of Uncontinuous Wavelengths

Note:

λ21 represents the wavelength with the frequency 192.10 THz. λ28 represents thewavelength with the frequency 192.8 THz, and so on.

The detailed allocation of uncontinuous wavelengths is listed in Table 6-4. Wavelengthof 9, 10, 19, 20, 21, 22, 31 and 32 are marked grey in the table and are unavailablewavelengths.

Table 6-4 Uncontinuous Wavelengths and Corresponding Central Frequencies

S/N CentralFrequency(THz)

CentralWavelength(nm)

S/N CentralFrequency (THz)


1 192.10 1560.61 21 194.10 1544.53

2 192.20 1559.79 22 194.20 1543.73

3 192.30 1558.98 23 194.30 1542.94

4 192.40 1558.17 24 194.40 1542.14

5 192.50 1557.36 25 194.50 1541.35

6 192.60 1556.55 26 194.60 1540.56

7 192.70 1555.75 27 194.70 1539.77

8 192.80 1554.94 28 194.80 1538.98

9 192.90 1554.13 29 194.90 1538.19

10 193 1553.33 30 195 1537.40

11 193.10 1552.52 31 195.10 1536.61

12 193.20 1551.72 32 195.20 1535.82

13 193.30 1550.92 33 195.30 1535.04

14 193.40 1550.12 34 195.40 1534.25

15 193.50 1549.32 35 195.50 1533.47

16 193.60 1548.51 36 195.60 1532.68

6-6



S/N CentralFrequency(THz)

CentralWavelength(nm)

S/N CentralFrequency (THz)


17 193.70 1547.72 37 195.70 1531.90

18 193.80 1546.92 38 195.80 1531.12

19 193.90 1546.12 39 195.90 1530.33

20 194 1545.32 40 196 1529.55

6.2 Service Access and Convergence SubsystemSpecifications

6.2.1 Board TypesFor the ZXWM M920 system board types, refer to Table 6-5.

Table 6-5 Board Types

Type Board

2.5 G board SOTU2.5G/MQA1/MJA/CH1/DSAC/COM/COMB/SAUC/SMUB/SDSA/SR

M42/DSAF/DSAB/DSA/COM/COMB/EHG1

10 G board EOTU10G/EOTU10GB/SOTU10G/TD2C/TS2C/FCA/FCAG/SRM41/ASMA

/ASMB/MQA2/LO2//LD2B/CO2/CQ2/LQ2/LD2/CD2/EQG2

40 G board MQT3/TST3/CS3/CD3/LS3

100 G board TS4/CS4/LS4/MX2

6.2.2 2.5 G Board SpecificationsTable 6-6 lists the interface specifications at the line side of the 2.5 G board

Table 6-6 Line-Side Interface Specifications of the 2.5 G Board

Item Unit Parameter

OTU的输入端Rn点参数

–21 PINReceiver sensitivity dBm

<-28 APD

Receiver reflection dB <–27

0 PINOverload power dBm

–9 APD

6-7



Item Unit Parameter

Wavelength range of input signal nm 1280 to 1565

OTU的输出端Sn点参数

Maximum -20 dB

bandwidth

nm l 0.2（EA MSA24pin）l 0.5（DM MSA24pin）l 1（SFP）

Spectral

characteristics

Minimum side mode

suppression ratio

dB 35

Nominal central

frequency

THz 192.1 to 196.0Central frequency

Central frequency

offset

GHz ≤±12.5（100 GHz）

Maximum dBm 6Mean output power

Minimum dBm 0

Minimum extinction ratio dB l +10（EA）l 8.2（DM MSA24pin/SFP）

Dispersion tolerance ps/nm l 12800（EA MSA24pin）l 6400（DM MSA24pin）l 3600（DM SFP）

Eye diagram - In compliance with ITU T. G.957 or ITU

T. G.959.1 Recommendation

6.2.3 10 G Board SpecificationsTable 6-7 lists the interface specifications at the line side of the 10 G board.

Table 6-7 Line-Side Interface Specifications of the 10 G Board

Item Unit Parameter


Signal rate Gbi-

t/s

9.953 to 11.318

–14 PINReceiver sensitivity dBm

–21 APD

Receiver reflection dB ＜-27

>0 PINOverload power dBm

>–9 APD


6-8



Item Unit Parameter


nm <0.3（NRZ-DPSK）Maximum -20 dB

bandwidth nm <0.4（RZ-DPSK）

Spectral

charac-

teristicsMinimum side mode

suppression ratio

dB ＞30

Nominal central

frequency

THz In compliance with ITU-T G.694.1 Recommendation

≤±12.5（100 GHz间隔）Central frequency

offset（EOL）GHz

≤±5（50 GHz间隔，需要OWM配合）

≤±10（100 GHz间隔）

Cen-

tral fre-

quency

Central frequency

offset（BOL）GHz

≤±3（50 GHz间隔，需要OWM配合）

MSA300/XFP，NRZ-DPSK

dBm –3 to 1Mean

output

power MSA300，RZ-DPSK dBm –5 to –2

Minimum extinction ratio dB 8.2

MSA300，NRZ-DPSK ps/

nm

–300 to 800Disper-

sion tol-

erance MSA300，RZ-DPSK ps/

nm

–400 to 400

Eye diagram - In compliance with ITU-T G.691 or ITU-T G.959.1

Recommendation

6.2.4 40G Board SpecificationsTable 6-8 lists the interface specifications at the line side of the 40 G board.


Item Unit Parameter


Signal rate Gbit/s 39.813 to 44.6

Receiver sensitivity（内置EDFA） dBm –15


Overload power dBm 1



6-9



Item Unit Parameter

0.7 （P-DPSK）Maximum -20 dB

bandwidth

nm

0.6 （RZ-DQPSK）

Spectral characteristics

Minimum

side mode

suppression ratio

dB 35

Nominal central

frequency

THz In compliance with ITU-T G.694.1

Recommendation

≤±5（100 GHz）Central frequency

offset（EOL）GHz

≤±2.5（50 GHz）

≤±3（100 GHz）

Central frequency

Central frequency

offset（BOL）GHz

≤±1.5（50 GHz）

P-DPSK dBm –5 to 5Mean output power

RZ-DQPSK dBm –9 to 3

Dispersion tolerance RZ-DQPSK ps/nm TBD

6.2.5 100 G Board SpecificationsTable 6-9 lists the interface specification at the line side of the 100 G board.


Item Unit Parameter


Signal rate Gbit/s 111.8 to 125.75

Receiver sensitivity dBm –15


Overload power dBm ＞1

最大输入光功率（损坏） dBm 20

接收机残余色散范围(1dB OSNR代价） ps/nm ±70000（PM QPSK）

平均差分群时延(1dB OSNR代价） ps 30（PM QPSK）


6-10



Item Unit Parameter

Maximum -20 dB

bandwidth

nm TBD

Minimum -3dB

bandwidth

nm TBD

Spectral characteristics

Minimum side mode

suppression ratio

dB 35

Nominal central

frequency

THz In compliance with

ITU-T G.694.1

Recommendation

Central frequency

offset（EOL）GHz ≤±2.5

Central frequency

Central frequency

offset（BOL）GHz ≤±1.5

Maximum dBm 3（PM-QPSK）Mean output power

Minimum dBm –5（PM-QPSK）

6.3 Optical Mux/DeMux Subsystem Specifications

6.3.1 SOAD Board SpecificationsFor the technical specifications of the SOAD2 board, refer to Table 6-10. For the technicalspecifications of the SOAD4 board, refer to Table 6-11.

Table 6-10 Technical Specifications of the SOAD2 Board

Item Specification

Central frequency range (THz) 191.30 to 196.05 (CE band)

Add/drop channel quantity 2

–1 dB bandwidth (Drop) (nm) > 0.2

–20 dB bandwidth (Drop) (nm) < 1.20

Channel spacing (GHz) 100

IN-D1/D2@ Adjacent channel > 25

IN-D1/D2@Non-adjacent channel > 35

IN-MID1@ Drop channel > 14

Isolation (dB)

IN-OUT@ Drop channel > 28

Optical return loss (dB) > 40

6-11



Item Specification

Drop wavelength (IN-D1/D2) < 3

Add wavelength (A1/A2-OUT) < 3

Insertion loss (dB)

Pass-through wavelength

(IN-OUT)

< 4

Polarization dependent loss (PDL) (dB) < 0.2

Polarization mode dispersion (PMD) (ps) < 0.1

Maximum allowed optical power (mW) < 500

Table 6-11 Technical Specifications of the SOAD4 Board

Item Specification

Central frequency range (THz) 191.30 to 196.05 (CE band)

Add/drop channel quantity 4

–1 dB bandwidth (Drop) (nm) > 0.2 nm

–20 dB bandwidth (Drop) (nm) <1.20 nm

Channel spacing (GHz) 100 GHz

IN-D1/D2/D3/D4@ Adjacent channel > 25

IN-D1/D2/D3/D4@ Non-adjacent

channel

> 35

IN-MID1@ Drop channel > 14

Isolation (dB)

IN-OUT@ Drop channel > 28

Drop wavelength (IN-D1/D2/D3/D4) < 4.0

Add wavelength (A1/A2/A3/A4-OUT) < 4.0

Insertion loss

(dB)

Pass-through wavelength (IN-OUT) < 5.0

Directivity (dB) > 60




Maximum allowed optical power (mW) < 500

6.3.2 OMU Board SpecificationsFor the technical specifications of the 8/16/32-channel OMU board, refer to Table 6-12.

For the technical specifications of the 40/48/80-channel OMU board, refer to Table 6-13.

6-12



Table 6-12 Technical Specifications the OMU Board (8/16/32-Channel)

Specification

8–ChannelOMU

16–ChannelOMU

32-Channel OMU

Item

Coupler Coupler Coupler AWG TFF

Insertion loss (dB) < 11 < 14 < 17 < 10 < 10

Maximum insertion loss difference

between channels (dB)

< 3 < 3 < 3 < 3 < 3

Channel spacing (GHz) - - - 100 100

Optical return loss (dB) > 40 > 40 > 40 > 40 > 40

Operating wavelength range (nm) 1529 to 1561

Polarization Dependent Loss

(PDL) (dB)

< 0.5 < 0.5 < 0.5 < 0.5 < 0.5

Polarization Mode Dispersion

(PMD) (ps)

< 0.5 < 0.5 < 0.5 < 0.5 < 0.5

Temperature characteristic

(nm/℃)

- - - - < 0.005

Table 6-13 Technical Specifications of the OMU Board (40/48/80-Channel)

Specification

40-Channel OMU 48-Channel OMU (80-Channel OMU)

Item

Coupler AWG TFF AWG Coupler AWG

Insertion loss (dB) < 19 < 10 < 10 < 10 < 23 < 10

Maximum insertion loss

difference between

channels (dB)

< 3 < 3 < 3 < 3 < 3.5 < 3

Channel spacing (GHz) - 100 100 100 - 50

Optical return loss (dB) > 40 > 40 > 40 > 40 > 40 > 40

Operating wavelength

range (nm)

1529 to 1561 1529 to

1568

1529 to 1561

Polarization Dependent

Loss (PDL) (dB)

< 0.6 < 0.5 < 0.5 < 0.5 < 0.7 < 0.5

Polarization Mode

Dispersion (PMD) (ps)

< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5

Temperature characteristic

(nm/℃)

- - < 0.005 - - -

6-13



6.3.3 ODU Board SpecificationsFor the technical specifications of the ODU board, refer to Table 6-14.

Table 6-14 Technical Specifications of the ODU Board

Specification

32-Channel ODU 40-Channel ODU 48-ChannelODU

80-ChannelODU

Item

AWG TFF AWG TFF AWG AWG

Insertion loss (dB) < 10 < 10 < 10 < 10 < 10 < 10

Maximum insertion

loss difference

between channels

(dB)

< 2 < 2 < 2 < 2 < 2 < 2

Channel spacing

(GHz)

- 100 100 100 100 50

Optical return loss

(dB)

> 40 > 40 > 40 > 40 > 40 > 40


range (nm)

1529 to 1561 1529 to

1561

1529 to

1561

1529 to

1561

1529 to 1568 1529 to 1561

Isolation between

adjacent channels

(dB)

> 25 > 25 > 25 > 25 > 25 > 25

Isolation between

non-adjacent channels

(dB)

> 30 > 30 > 30 > 30 > 30 > 30

Polarization

Dependent Loss (PDL)

(dB)

< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5

Polarization Mode

Dispersion (PMD) (ps

)

< 0.5 < 0.5 < 0.5 < 0.5 < 0.5 < 0.5

Temperature

characteristic (nm/℃)

- < 0.005 - < 0.005 - -

–1 dB bandwidth (nm) > 0.2 > 0.2 > 0.2 > 0.2 > 0.2 > 0.2

6.3.4 ODUB Board SpecificationsFor the technical specifications of the ODUB board, refer to Table 6-15.

6-14



Table 6-15 Technical Specifications of the ODUB Board

Item Specifications (40-Channel)

Insertion loss (dB) < 1 0

Maximum insertion loss difference between channels (dB) < 2




Isolation of adjacent channel (dB) > 25

Isolation of non-adjacent channel (dB) > 30

Polarization Dependent Loss (PDL) (dB) < 0.5

Polarization Mode Dispersion (PMD) (ps) < 0.5

Temperature characteristics (nm/℃) -

–1 dB bandwidth (nm) > 0.2

6.3.5 OCI Board SpecificationsFor the technical specifications of the OCI board, refer to Table 6-16.

Table 6-16 Technical Specifications of the OCI Board (50 GHz to 100 GHz)

Item Specification Remark

C-band operating wavelength range (nm) 1529 to 1561 -

CE-band operating wavelength range

(nm)

1529 to 1568 -

Input channel spacing (GHz) 100 Multiplexing procedure

Output channel spacing (GHz) 50 Multiplexing procedure

< 2.5 Input signal 10 Gbit/sInsertion loss (dB)

< 3 Input signal 40 Gbit/s

Maximum insertion loss difference (dB) < 1 -

Isolation (dB) > 25 Demultiplexing procedure

Return loss (dB) > 40 -

Polarization Dependent Loss (PDL) (dB) < 0.5 -

Polarization Mode Dispersion (PMD) (ps) < 0.5 -

6-15



6.3.6 VMUX Board SpecificationsFor the technical specifications of the VMUX board, refer to Table 6-17.

Table 6-17 Technical Specifications of the VMUX Board

Item Specification

Channel quantity 40/48


40-channel: 1529 to 1561Operating wavelength range (nm)

48-channel: 1529 to 1568

-1 dB bandwidth (nm) > 0.2

Insertion loss (dB) < 8 (attenuation is 0)

Polarization mode dispersion (PMD) (ps) 0.5

Polarization dependent loss (PDL) (dB) 0.8


Channel adjustment range (dB) 0 to 10

VOA adjustment precision (dB) 0.5

6.3.7 VMUXB Board SpecificationsFor the technical specifications of the VMUXB board, refer to Table 6-18.

Table 6-18 Technical Specifications of the VMUXB Board

Item Specification

Channel quantity 40


Operating wavelength range (nm) 40-channel: 1529 to 1561

-1 dB bandwidth (nm) > 0.2

Insertion loss (dB) < 8 (attenuation is 0)

Polarization mode dispersion (PMD) (ps) 0.5

Polarization dependent loss (PDL) (dB) 0.8


Channel adjustment range (dB) 0 to 10

VOA adjustment precision (dB) 0.5

6-16



6.3.8 SSDM Board SpecificationsFor the technical specifications of the SSDMT board, refer to Table 6-19. For the technicalspecifications of the SSDMR board, refer to Table 6-20.

Table 6-19 Technical Specifications of the SSDMT Board

Item Specification


range (nm)

CE band 1529 to 1568

IN→OUT < 1.5Insertion loss (dB)

SIN→OUT < 1.5

IN→OUT (@λSIN) > 12Isolation (dB)

SIN→OUT (@λIN) > 20



Loss (PDL) (dB)

< 0.2

Input optical power

(mW)

< 500

6-17



Table 6-20 Technical Specifications of the SSDMR Board

Item Specification

Operating wavelength range (nm) CE band 1529 to 1568

IN→OUT < 1.5Insertion loss (dB)

IN→SOUT < 1.5

IN→OUT (@λSOUT) > 12Isolation (dB)

IN→SOUT (@λOUT) > 40


Polarization Dependent Loss (PDL)

(dB)

< 0.2

Input optical power (mW) < 500

6.3.9 SOGMD Board SpecificationsFor the technical specifications of the SOGMD board, refer to Table 6-21.

Table 6-21 Technical Specifications of the SOGMD Board

Item Specification

Operating wavelength range (nm) 1529 to 1561 (C band)

IN→RRO < 2.5

IN→RBO < 2.5

IN→BRO < 2.5

IN→BBO < 2.5

RRI→OUT < 2.5

RBI→OUT < 2.5

BRI→OUT < 2.5

Insertion loss (dB)

BBI→OUT < 2.5

Isolation (dB) >12

Optical reflectance (dB) < –40



Maximum optical power (mW) < 500

6.3.10 WBU Board SpecificationsFor the technical specifications of the WBU board, refer to Table 6-22.

6-18



Table 6-22 Technical Specifications of the WBU Board

Item Specification


100Channel spacing (GHz)

50

40 (channel spacing: 100 GHz)Channel quantity

80(channel spacing: 50 GHz)

A1-OUT < 2

IN-D1 < 4

EXIN-OUT < 14

Insertion loss of

WBU/AD1 (dB)

IN-EXOUT < 4

A1-OUT < 12

A2-OUT < 2

IN-D1 < 12

IN-D2 < 2

EXIN-OUT < 18

Insertion loss of

WBU/AD2 (dB)

IN-EXOUT < 12

Attenuation adjustment range (dB) 0 to 15

Attenuation adjustment precision (dB) < (0.5 or ±10% of the configured value, select

the larger one)

Blocking extinction ratio (dB) > 35

Return loss (dB) > 40

Maximum total optical input power (dBm) ≤ 25

Maximum single-channel optical input power

(dBm)

≤ 16

6.3.11 WSU Board SpecificationsThere are two types of WSU boards: WSUD board and WSUA board.

For the technical specifications of the WSUD board, refer to Table 6-23.

Table 6-23 Technical Specifications of the WSUD Board

Item Specification

Wavelength range (nm) 1529 to 1561 (C band)

6-19



Item Specification


50


80(channel spacing: 50 GHz)

A1-OUT < 2

IN-D1-D8 < 8

EXIN-OUT < 9

WSUD/MA1

IN-EXOUT < 8

A1-OUT < 10

A2-OUT < 2

IN-D1-D8 < 8

EXIN-OUT < 16

WSUD/MA2

IN-EXOUT < 8

Insertion loss

(dB)

WSUD/E < 8

Attenuation adjustment range (dB) 0 ~ 15

<1.0（0 ~ 10 dB）Attenuation adjustment precision (dB)

<1.5（>10 dB）



Maximum total optical input power (dBm) < 25

For the technical specifications of the WSUA board, refer to Table 6-24.

Table 6-24 Technical Specifications of the WSUA Board

Item Specification

Wavelength range (nm) 1529 to 1561 (C band)


50


80 (channel spacing: 50 GHz)

6-20



Item Specification

IN-D1 < 2

A1-A8-OUT < 8

EXIN-OUT < 8

WSUA/MD1

IN-EXOUT < 9

IN-D1 < 2

IN-D2 < 10

A1-A8-OUT < 8

EXIN-OUT < 8

WSUA/MD2

IN-EXOUT < 16

Insertion loss

(dB)

WSUA/E < 8

Attenuation adjustment range (dB) 0 ~ 15

<1.0（0 ~ 10 dB）Attenuation adjustment precision (dB)

<1.5（>10 dB）



Maximum total optical input power (dBm) < 25

6.3.12 WBM Board SpecificationsFor the technical specifications of the WBM board, refer to Table 6-25.

Table 6-25 Technical Specifications of the WBM Board

Item Specification



Channel quantity 40 (channel spacing: 100 GHz)

An-OUT (n=1–40) < 8

IN-DROP < 7

EXIN-OUT < 13

Insertion loss (dB)

IN-EXOUT < 3

Attenuation adjustment range (dB) 0 to 15

Attenuation adjustment precision (dB) < (0.5 or ±10% of the configured value, select the

greater one between them)


6-21



6.3.13 PDU Board SpecificationsFor the technical specifications of the PDU-4-x board, refer to Table 6-26. For the technicalspecifications of the PDU-5-x board, refer to Table 6-27. For the technical specificationsof the PDU-8-x board, refer to Table 6-28. For the technical specifications of the PDU-9-xboard, refer to Table 6-29. For the technical specifications of the PDU-16-1 board, refer toTable 6-30.

Table 6-26 Technical Specifications for the PDU-4-x Board

Item Specification

Operating wavelength range (nm) 1529 to 1568 (CE band)

Insertion loss (dB) INx→Ox-1/2/3/4 < 8.0




Item Specification


INx→Ox-1/2/3/4 < 12.0Insertion loss (dB)

INx→Dx < 4.0




Item Specification


Insertion loss (dB) INx→Ox-1/2/3/4/5/6/7/8 < 11.0




Item Specification


INx→Ox-1/2/3/4/5/6/7/8 < 15.0Insertion loss (dB)

INx→Dx < 4.0



6-22




Item Specification


Insertion loss (dB) IN→O-1/2/3/4/5/6/7/8

/9/10/11/12/13/14/15/16

< 14.0



6.4 Optical Amplification Subsystem Specifications

6.4.1 SEOA Board Specifications

SEOBA Board SpecificationsFor the technical specifications of the SEOBA board with 40/80-channel in the C band,refer to Table 6-31.

Table 6-31 Technical Specifications of the 40/80-Channel C-Band SEOBA Board

Specification (40/80-Channel)

SEOBA17/17 SEOBA22/20

Item

40-Channel 80-Channel 40-Channel 80-Channel

Operating wavelength range (nm) 1529 to 1561 1529 to 1561

Total input power range (dBm) –32 to 0 –32 to –2

Channel input power range (dBm) –32 to –16 –32 to –19 –32 to –18 –32 to –21

Total output power range (dBm) –2 to 17 –5 to 17 1 to 20 –2 to 20

Maximum total output power

(dBm)

17 20

Noise figure (dB) < 6 < 6

Polarization Dependent Loss

(PDL) (dB)

< 0.5 < 0.5

Pump leakage at input (dBm) < –30 < –30

Pump leakage at output (dBm) < –30 < –30

Input return loss (dB) > 40 > 40

Output return loss (dB) > 40 > 40

Nominal gain (dB) 17 22

6-23




SEOBA17/17 SEOBA22/20

Item


Maximum allowed input

reflectance (dB)

> 30 > 30

Maximum allowed output

reflectance (dB)

> 30 > 30

Gain flatness (dB) ±1 ±1

Gain response time while

adding/reducing channels (stable

status) (ms)

< 10 < 10


(PMD) (ps)

< 0.5 < 0.5

SEOPA Board SpecificationsFor the technical specifications of the SEOPA board with 40/80-channel in the C band,refer to Table 6-32.

Table 6-32 Technical Specifications of the 40/80-Channel C-Band SEOPA Board


SEOPA17/17 SEOPA22/17 SEOPA27/17

Item

40-Cha-nnel

80-Cha-nnel

40-Cha-nnel

80-Chan-nel

40-Chan-nel

80-Chan-nel


range (nm)

1529 to 1561 1529 to 1561 1529 to 1561

Total input power range

(dBm)

–35 to 0 –35 to –4 –35 to –10

Channel input power

range (dBm)

–35 to

–16

–35 to

–19

–35 to

–20

–35 to –23 –35 to –26 –35 to –29

Total output power range

(dBm)

–2 to 17 –5 to 17 –2 to 17 –5 to 17 –2 to 17 –5 to 17

Maximum total output

power (dBm)

17 17 17

Noise figure (dB) < 5.5 < 5.5 < 5.5


Loss (PDL) (dB)

< 0.5 < 0.5 < 0.5

Pump leakage at input

(dBm)

< –30 < –30 < –30

6-24




SEOPA17/17 SEOPA22/17 SEOPA27/17

Item

40-Cha-nnel

80-Cha-nnel

40-Cha-nnel

80-Chan-nel

40-Chan-nel

80-Chan-nel

Pump leakage at output

(dBm)

< –30 < –30 < –30

Input return loss (dB) > 40 > 40 > 40

Output return loss (dB) > 40 > 40 > 40

Nominal gain (dB) 17 22 27


reflectance (dB)

> 30 > 30 > 30


reflectance (dB)

> 30 > 30 > 30

Gain flatness (dB) ±1 ±1 ±1


adding/reducing channels

(stable status) (ms)

< 10 < 10 < 10

Polarization Mode


< 0.5 < 0.5 < 0.5

SEOLA Board SpecificationsFor the technical specifications of the SEOLA board with 40/80-channel in the C band,refer to Table 6-33.

Table 6-33 Technical Specifications of the 40/80-Channel C-Band SEOLA Board


SEOLA22/20

Item

40-Channel 80-Channel


Total input power range (dBm) –35 to –2

Channel input power range (dBm) –35 to –18 –35 to –21

Total output power range (dBm) 1 to 20 –2 to 20

Maximum total output power (dBm) 20

Noise figure (dB) < 6


Pump leakage at input (dBm) < –30

Pump leakage at output (dBm) < –30

6-25




SEOLA22/20

Item

40-Channel 80-Channel

Input return loss (dB) > 40

Output return loss (dB) > 40

Nominal gain (dB) 22

Maximum allowed input reflectance (dB) > 30

Maximum allowed output reflectance (dB) > 30

Gain flatness (dB) ±1

Gain response time while adding/reducing

channels (stable status) (ms)

< 10


6.4.2 EOA Board SpecificationsThe EOA board technical specifications are compatible with 2.5 Gbit/s, 10 Gbit/s, 40 Gbit/sand 100 Gbit/s systems, which enables smooth transition from the 2.5 Gbit/s, 10 Gbit/ssystem, and 40 Gbit/s system to the 100 Gbit/s system.

EOBAH Board Specificationsl 40/80-Channel C-band EOBAH board

For the technical specifications of the 40/80-channel C-band EOBAH board, refer toTable 6-34. The single-channel power of 32-channel EOBAH board is 1 dB higherthan that of the corresponding 40-channel EOBAH board.

Table 6-34 Technical Specifications of the 40/80-Channel C-Band EOBAH Board


EOBAH27/26 EOBAH24/24

Item


Operating wavelength range

(nm)

1529 to 1561 (C band) 1529 to 1561 (C band)


(dBm)

–32 to 2 –32 to 3

Channel input power range

(dBm)

–32 to –17 –32 to –13 –32 to –13 –32 to –16

Channel output power range

(dBm)

7 to 13 4 to 10 5 to 11 2 to 8

6-26




EOBAH27/26 EOBAH24/24

Item



(dBm)

7 to 26 4 to 26 5 to 24 2 to 24


(dBm)

26 24

Noise figure (dB) < 6 < 6


Loss (PDL) (dB)

< 0.5 < 0.5

Pump leakage at input

(dBm)

< –30 < –30


(dBm)

< –30 < –30

Input return loss (dB) > 40 > 40

Output return loss (dB) > 40 > 40

Channel gain (dB) 27 24


reflectance (dB)

> 30 > 30


reflectance (dB)

> 30 > 30

Gain flatness (dB) ±1 ±1




< 10 < 10

Polarization Mode


< 0.5 < 0.5

l 48/96-channel CE-band EOBAH board

For the technical specifications of the 48/96-channel CE-band EOBAH board, refer toTable 6-35.

6-27



Table 6-35 Technical Specifications of the 48/96-Channel CE-Band EOBAH Board


EOBAH23/21 EOBAH26/24 EOBAH28/26

Item

48-Channel 96-Channel 48-Channel 96-Channel 48-Channel 96-Channel

Operating

wavelength range

(nm)

1529 to 1568 (CE band) 1529 to 1568 (CE band) 1529 to 1568 (CE band)

Total input power

range (dBm)

–32 to 1 –32 to 1 –32 to 1

Channel input power

range (dBm)

–32 to –16 –32 to –19 –32 to –16 –32 to –19 –32 to –16 –32 to –19

Channel output

power range (dBm)

1 to 7 –2 to 4 4 to 10 1 to 7 6 to 12 3 to 9

Total output power

range (dBm)

1 to 21 –2 to 21 4 to 24 1 to 24 6 to 26 3 to 26

Maximum total

output power (dBm)

21 24 26

Noise figure (dB) < 6 < 6 < 6

Polarization

Dependent Loss

(PDL) (dB)

< 0.5 < 0.5 < 0.5

Pump leakage at

input (dBm)

< –30 < –30 < –30

Pump leakage at

output (dBm)

< –30 < –30 < –30

Input return loss

(dB)

> 40 > 40 > 40

Output return loss

(dB)

> 40 > 40 > 40

Channel gain (dB) 23 26 28

Maximum allowed

input reflectance

(dB)

> 30 > 30 > 30

Maximum allowed

output reflectance

(dB)

> 30 > 30 > 30


6-28




EOBAH23/21 EOBAH26/24 EOBAH28/26

Item

48-Channel 96-Channel 48-Channel 96-Channel 48-Channel 96-Channel

Gain response

time while

adding/reducing

channels (stable

status) (ms)

< 10 < 10 < 10

Polarization Mode

Dispersion (PMD)

(ps)

< 0.5 < 0.5 < 0.5

EONA Board Specificationsl 40/80-channel C-band EONA board

For the technical specifications of the 40/80-channel C-band EONA board, refer toTable 6-36. The single-channel power of 32-channel EONA board is 1 dB higher thanthat of the corresponding 40-channel EONA board.

Table 6-36 Technical Specifications of the 40/80-Channel C-Band EONA Board


EONA25/20 EONA33/20 EONA27/24

Item

40-Chan-nel

80-Chan-nel

40-Chan-nel

80-Channel 40-Chan-nel

80-Chan-nel


(nm)

1529 to 1561 (C band) 1529 to 1561 (C band) 1529 to 1561 (C band)


(dBm)

–35 to –2 –35 to –10 –35 to 0


(dBm)

–35 to –18 –35 to –21 –35 to –26 –35 to –29 –35 to –16 –35 to –19


(dBm)

1 to 7 –2 to 4 1 to 7 –2 to 4 5 to 11 2 to 8


(dBm)

1 to 20 -2 to 20 1 to 20 -2 to 20 5 to 24 2 to 24


(dBm)

20 20 24


Polarization dependent loss

(PDL) (dB)

< 0.5 < 0.5 < 0.5

Pump leakage at input (dBm) < –30 < –30 < –30

6-29





Item

40-Chan-nel

80-Chan-nel

40-Chan-nel


80-Chan-nel


(dBm)

< –30 < –30 < –30





reflectance (dB)

> 30 > 30 > 30


reflectance (dB)

> 30 > 30 > 30





< 1 0 < 1 0 < 1 0

Polarization Mode


< 0.5 < 0.5 < 0.5

l 48/96-channel CE-band EONA board

For the technical specifications of the 48/96-channel CE-band EONA board, refer toTable 6-37.

Table 6-37 Technical Specifications of the 48/96-Channel CE-Band EONA Board



Item

48-Chan-nel


96-Chan-nel

48-Chan-nel

96-Chan-nel


(nm)

1529 to 1568 (CE band) 1529 to 1568 (CE band) 1529 to 1568 (CE band)


(dBm)

–35 to –4 –35 to –12 –35 to –3


(dBm)

–35 to –21 –35 to –24 –35 to –29 –35 to –32 –35 to –19 –35 to –22


(dBm)

1 to 7 –2 to 4 1 to 7 –2 to 4 5 to 11 2 to 8

6-30





Item

48-Chan-nel


96-Chan-nel

48-Chan-nel

96-Chan-nel


(dBm)

1 to 21 –2 to 21 1 to 21 –2 to 21 5 to 24 2 to 24


(dBm)

21 21 24


Polarization dependent loss

(PDL) (dB)

< 0.5 < 0.5 < 0.5

Pump leakage at input (dBm) < –30 < –30 < –30


(dBm)

< –30 < –30 < –30





reflectance (dB)

> 30 > 30 > 30


reflectance (dB)

> 30 > 30 > 30





< 1 0 < 1 0 < 1 0


(PMD) (ps)

< 0.5 < 0.5 < 0.5

6.4.3 DRA Board SpecificationsThe DRA board uses RAMAN amplifiers to amplify optical signals. For its technicalspecifications, refer to Table 6-38.

Table 6-38 Technical Specifications of the DRA Board

Item Specification

C band: 2 to 3Pump wavelength and quantity (nm/piece)

CE band: 2 to 3

6-31



Item Specification

Pump power (dBm) ≥ 29

Total output power (dBm) ≥ 12

C/CE band gain (G.652) (dB) 10/10

C/CE band gain (LEAF) (dB) 12/12

C/CE band gain (TW RS) (dB) 13/13

C/CE band equivalent noise figure (G.652) (dB) 0/0

C/CE band equivalent noise figure (LEAF) (dB) –1/–1

C/CE band equivalent noise figure (TW RS) (dB) –1.5/–1.5

Polarization dependent gain (dB) < 0.5

Temperature stability (pm/℃) < 500

In actual application, both EDFA and RAMAN amplifiers are used to amplify optical signals,meaning the EOA and DRA boards combine to amplify optical signals. The technicalspecifications for the combination of EOA and DRA boards are listed in Table 6-39.

Table 6-39 Technical Specifications of the EOA and DRA Board Combination

Item Specification

1529 to 1561 (C band)Operating wavelength range (nm)

1529 to 1568 (CE band)

Maximum total output power (dBm) 20

Noise figure (dB) < 3


Pump leakage at output (dBm) < –30

Input return loss (dB) > 40

Output return loss (dB) > 40

Maximum allowed input reflectance (dB) > 30

Maximum allowed output reflectance (dB) > 30

Gain flatness (dB) ±1

Gain response time while adding/reducing channels


< 1 0


6.4.4 LAC Board SpecificationsFor the technical specifications of the LAC board, refer to Table 6-40.

6-32



Table 6-40 Technical Specifications of the LAC Board

Item Unit Specification

1529 to 1561 (C band)Wavelength range (band) (nm) nm

1529 to 1568 (CE band)

Optical input power detection range (dBm) dBm -30 ~ 0 / -30 ~ +20

Optical output power detection range (dBm) dBm -30 ~ 0 / -30 ~ +18

Attenuation adjustment precision (dB) dB ≤ ±0.5

Attenuation adjustment step length (dB) dB ≤ ±0.2

Attenuation adjustment range (dB) dB ≥ 20

Attenuation adjustment rate (dB/s) dB/s ≤ 10

6.5 Optical Layer Management SubsystemSpecifications

6.5.1 OPM Board SpecificationsFor the technical specifications of the OPM board with channel spacing of 50 GHz, referto Table 6-41. For the technical specifications of the OPM board with channel spacing of100 GHz, refer to Table 6-42.

Table 6-41 Technical Specifications of the OPM Board (50 GHz)

Item Specification

1529 to 1561 (C band)Wavelength range (nm)

1529 to 1568 (CE band)

Wavelength detection precision (nm) ±0.05

Input power range (dBm) –45 to –15

Power detection precision (dBm) ±1.5

OSNR range (dB) ≤ 25

OSNR detection precision (dB) ±1.5

Input return loss (dB) 30

Table 6-42 Technical Specifications of the OPM Board (100 GHz)

Item Specification

1529 to 1561 (C band)Wavelength range (nm)

1529 to 1568 (CE band)

6-33



Item Specification

Wavelength detection precision (nm) ±0.1






6.5.2 EOPM Board SpecificationsFor the technical specifications of the EOPM board with channel spacing of 50 GHz, referto Table 6-43. For the technical specifications of the EOPM board with channel spacing of100 GHz, refer to Table 6-44.

Table 6-43 Technical Specifications of the EOPM Board (50 GHz)

Item Specification

1529 to 1561 (C band)

1570 to 1605 (L band)

Wavelength range (nm)

1529 to 1568 (CE band)

Wavelength detection range (nm) ±0.05






Signal detection time (s) ≤ 1

Table 6-44 Technical Specifications of the EOPM Board (100 GHz)

Item Specification

1529 to 1561 (C band)

1570 to 1605 (L band)

Wavelength range (nm)

1529 to 1568 (CE band)

Wavelength detection range (nm) ±0.1



6-34



Item Specification




Signal detection time (s) ≤ 1

6.5.3 OWM Board SpecificationsFor the technical specifications of the OWM board, refer to Table 6-45.

Table 6-45 Technical Specifications of the OWM Board

Item Specification

1529 to 1561 (C band)Wavelength detection range (nm)

1529 to 1568 (CE band)

Optical input power of single wavelength (dBm) –45 to –15

Wavelength offset capture range (GHz) –10 to +10

Wavelength offset control precision (GHz) > ±5

6.5.4 EOWM Board SpecificationsFor the technical specifications of the EOWM board, refer to Table 6-46.

Table 6-46 Technical Specifications of the EOWM Board

Item Specification

1529 to 1561 (C band)Wavelength detection range (nm)

1529 to 1568 (CE band)

Optical input power (dBm) –45 to –15

Wavelength offset capture range

(GHz)

–10 to +10

Wavelength offset alarm range (GHz) > ±5

6.6 Protection Subsystem Specifications

6.6.1 SOP Board SpecificationsFor the technical specifications of the SOP board, refer to Table 6-47.

6-35



Table 6-47 Technical Specifications of the SOP Board

Item Specification

1280 to 1625Operating wavelength Range (nm)

1510 to 1625 1280 to 1510

T1_I→T1_O1 < 4.4 < 5.0

T2_I→T2_O1 < 4.4 < 5.0

T1_I→T1_O2 < 4.4 < 5.0

T2_I→T2_O2 < 4.4 < 5.0

R1_I1→ R1_O < 2.1 < 2.7

R2_I1→ R2_O < 2.1 < 2.7

R1_I2→ R1_O < 2.1 < 2.7

Insertion Loss (dB)

R2_I2→ R2_O < 2.1 < 2.7


Polarization dependent loss (dB) < 0.2

Optical input power (mW) < 200

Switching time (ms) 50

6.6.2 SOPCS Board SpecificationsFor the technical specifications of the SOPCS board, refer to Table 6-48.

Table 6-48 Technical Specifications of the SOPCS Board


1260-1620Operating wavelength range nm

1510-1620nm 1260-1510nm

API → BPO dB <2.1 <2.7

API→BOUT dB <2.7 <3.3

AWI→AOUT dB <2.1 <2.7

AIN → AWO dB <4.4 <5.0

AIN→BPO dB <5.1 <5.7

BIN→ BWO dB <4.4 <5.0

BIN→APO dB <5.1 <5.7

BWI→BOUT dB <2.1 <2.7

BPI→AOUT dB <2.7 <3.3

Insertion loss

6-36




BPI→APO dB <2.1 <2.7

Return loss dB >40

Polarization dependent loss dB <0.3

Optical input power mW <200

Switching time ms <50

Table 6-49

Item

(nm) 1260 to 1620 1510 to 1620 1260 to 1510

API → BPO < 2.1 < 2.7

API→BOUT < 2.7 < 3.3

AWI→AOUT < 2.1 < 2.7

AIN → AWO < 4.4 < 5.0

AIN→BPO < 5.1 < 5.7

BIN→ BWO < 4.4 < 5.0

BIN→APO < 5.1 < 5.7

BWI→BOUT < 2.1 < 2.7

BPI→AOUT < 2.7 < 3.3

BPI→APO < 2.1 < 2.7

(dB) > 40 - -

(dB) < 0.3 - -

(mW) < 200 - -

(ms) < 50 - -

6.6.3 SOPMS Board SpecificationsFor the technical specifications of the SOPMS board, refer to Table 6-50.

Table 6-50 Technical Specifications of the SOPMS Board


Operating wavelength range nm 1510 to 1610

6-37




API→BPO dB <3.2

AWI→AOUT dB <1.7

BWI→BOUT dB <1.7

BPI→APO dB <3.2

AIN→AWO dB <1.7

BIN→BWO dB <1.7

API→AWO dB <3.2

AWI→APO dB <3.2

AIN→BPO dB <1.7

BPI→AOUT dB <1.7

BWI→BPO dB <3.2

BPI→BWO dB <3.2

BIN→APO dB <1.7

Insertion loss

API→BOUT dB <1.7

Return loss dB >40

Polarization dependent loss dB <0.3

Optical input power mW <200

Switching time ms <50

6.7 Supervision Subsystem Specifications

6.7.1 SOSCB Board SpecificationsThe SOSCB board supports 100-Mbps optical supervisory channels. For the technicalspecifications of the SOSCB board, refer to Table 6-51.

Table 6-51 Technical Specifications for the SOSCB Board

Item Specification

Optical signal type 100BASE-FX

Operating wavelength (nm) 1510±10

Signal code pattern 4B/5B

Supervision rate (Mbit/s) 100

Signal transmit power (dBm) –5 to 0 –1 to 6 ≥ +4

Minimum receiver sensitivity (dBm) –34 –35 –43

6-38



6.7.2 CCP Board SpecificationsFor the CCP board technical specifications, refer to Table 6-52.

Table 6-52 CCP Board Technical Specifications

Item Specification

Optical signal type 1000BASE-FX

Working wavelength (nm) 1310

Signal code pattern 8B/10B

Supervision rate (Mbit/s) 1000

Optical signal transmit power (dBm) -8`-2 ±3

Minimum receiver sensitivity (dBm) –20

6.8 RPOA Subsystem Specifications

6.8.1 Applicable Transmission CodesThe RPOA subsystem is designed for ultra-long-haul transmission. It only supports thetransmission over a single span because the Signal-to-Noise Ratio (SNR) of the systemdecreases greatly if fibers are too long.

Because the amplification range of the EDF does not include 1510-nm wavelength and thesupervisory information cannot be transmitted over a long distance, the RPOA subsystemneeds an independent service wavelength to transfer supervision signals.

Table 6-53 describes the transmission codes supported by RPOA subsystem over a singlespan. Note that the system capacity listed in the table already includes a supervisorychannel.

Table 6-53 Transmission Codes Supported by the RPOA Subsystem (over a SingleSpan)

Fiber Type Single-Span Line Attenuation (dB) Maximum System Capacity(Gbit/s)

≤ 73 4 × 2.5

≤ 72 8 × 2.5

≤ 69 16 × 2.5

≤ 63 40 × 2.5

≤ 67 4 × 10

≤ 67 8 × 10

≤ 67 16 × 10

G.652 fiber

≤ 63 40 × 10

6-39



Fiber Type Single-Span Line Attenuation (dB) Maximum System Capacity(Gbit/s)

≤ 68.5 4 × 2.5

≤ 67 8 × 2.5

≤ 64 16 × 2.5

≤ 63 40 × 2.5

≤ 66 4 × 10

≤ 66 8 × 10

≤ 66 16 × 10

G.655 fiber

≤ 63 40 × 10

6.8.2 RPOA Subsystem Optical SpecificationsFor the RPOA subsystem optical specifications, refer to Table 6-54.

Table 6-54 RPOA Subsystem Optical Specifications

Item RPOA Subsystem with a GFF RPOA Subsystem without GFF

Amplification range (nm) 1529 to 1561 1546 to 1561

Noise figure (dB) < 7 (within the amplification range) < 7 (within the amplification range)

Gain (dB) > 17 > 17

Gain flatness (dB) < 2 < 2

Optical input power (dBm) -44 to -18 -44 to -18

Optical output power (dBm) -30 to +2 -34 to 8

Operating temperature

range (°C)

-40 to 65 (RGU), -10 to 60 (RPU) -40 to 65 (RGU), -10 to 60 (RPU)

Storage temperature range

(°C)

-40 to 85 -40 to 85

• The RPOA subsystem without Gain Flatness Filter (GFF) meets the requirements of the system with up to 16 wavelengths, while the RPOA subsystem with a GFF meets the requirements of systems with up to 40 wavelengths.

6.9 DCM Technical SpecificationsDCM optical modules are classified into two types according to different principles: DCMbased on Dispersion Compensation Fiber (DCF) and DCMs based on fiber brag grating.

For descriptions for DCM technical specifications, refer to Table 6-55 and Table 6-56.

6-40



Table 6-55 DCM Technical Specifications (G.652 Optical Fiber)

Type TypicalCompen-sationDistance(km)

MaximumInsertionLoss (dB)

Disper-sionSlopeCompen-sationRatio

Polar-izationMode dis-persion(ps)

Polariza-tion De-pendentLoss (dB)

MaximumInputOpticalPower(dBm)

WorkingWave-lengthRange(nm)

DCM for

G.652(10

km)

10 3 90% to

110%

0.3 0.5 20 1525 to

1565

DCM for

G.652(20

km)

20 4 90% to

110%

0.4 0.5 20 1525 to

1565

DCM for

G.652(40

km)

40 5 90% to

110%

0.6 0.5 20 1525 to

1565

DCM for

G.652(60

km)

60 7 90% to

110%

0.7 0.5 20 1525 to

1565

DCM for

G.652(80

km)

80 8 90% to

110%

0.8 0.5 20 1525 to

1565

DCM for

G.652(10

0km)

100 9 90% to

110%

0.9 0.5 20 1525 to

1565

DCM for

G.652(12

0km)

120 11 90% to

110%

1.0 0.5 20 1525 to

1565

1. Maximum input optical power refers to the maximum input optical power that the module can bearwhen it is not damaged.

Table 6-56 DCM Technical Specifications (G.655 LEAF Optical Fiber)

Type TypicalCompen-sation

MaximumInsertionLoss (dB)

Disper-sionSlope

Polar-izationMode dis-

Polariza-tion De-

MaximumInputOptical

WorkingWave-length

6-41



Distance(km)

Compen-sationRatio

persion(ps)

pendentLoss (dB)

Power(dBm)

Range(nm)

DCM for

G.655

LEAF(20

km)

20 4 80% to

120%

0.45 0.3 20 1525 to

1565

DCM for

G.655

LEAF(40

km)

40 5 80% to

120%

0.6 0.3 20 1525 to

1565

DCM for

G.655

LEAF(60

km)

60 6 80% to

120%

0.75 0.3 20 1525 to

1565

DCM for

G.655

LEAF(80

km)

80 7 80% to

120%

0.8 0.3 20 1525 to

1565

DCM for

G.655

LEAF(100

km)

100 8 80% to

120%

0.9 0.3 20 1525 to

1565

DCM for

G.655L-

EAF(120

km)

120 9 80% to

120%

1.0 0.3 20 1525 to

1565

DCM for

G.655

LEAF

FBG(240

km)

240 4 80% to

120%

1.5 0.25 23 1528 to

1568

1. Maximum input optical power refers to the maximum input optical power that the module can bearwhen it is not damaged.

6.10 Environment SpecificationsThe environment requirements for the ZXWMM920 equipment can be classified into threeaspects: storage environment, transportation environment, and operational environment.

6-42



6.10.1 Power Supply RequirementFor the power supply requirements of the ZXWM M920 system, refer to Table 6-57.

Table 6-57 Power Supply Requirements

Input voltage: Allowable fluctuation range:

–48 VDC –60 VDC to –40 VDC

–60 VDC –70 VDC to –50 VDC

6.10.2 Storage Environment

Climate RequirementThe climate requirements for the ZXWM M920 equipment are described in Table 6-58.

Table 6-58 Climate Requirements (Storage Environment)

Item Specifications

Altitude ≤ 4000 m

Air pressure 70 kPa to 106 kPa

Temperature –40 ℃ to +70 ℃

Temperature variance ratio ≤ 1 ℃/min

Relative humidity 5% to 100%

Solar radiation ≤ 1120 W/s2

Heat radiation ≤ 600 W/s2

Wind speed ≤ 20 m/s

Waterproof Requirementl Keep the equipment indoors.l Ensure that there is no water on the storage room floor, so that the water will not leak

on the packing container of the equipment. Furthermore, the storage position shouldbe far away from leaking surfaces such as automatic fire fighting equipment and theheating system.

l If the equipment must be stored outside, the requirements are listed as follows:

à Ensure that the packing box of the equipment is in good condition without anydamage.

à Waterproofing measures should be taken to prevent rain from leaking into thepacking box of the equipment.

à Ensure that there is no water on the floor where the equipment is placed.

à Do not expose the packing box to direct sunlight.

6-43



Ecological Environmentl Avoid the propagation of microorganism, such as fungi or mould.l Ensure that no rodents (such as mouse) enter the equipment.

Air Cleanness Requirementl There should be no explosive, electrically conductive, magnetically conductive or

corrosive dust in the equipment room.l The concentrations of mechanical activity materials are described in Table 6-59.l The concentrations of chemical activity materials are described in Table 6-60.

Table 6-59 Concentrations of Mechanical Activity Materials (Storage Environment)

Mechanical Activity Material Content

Suspended dust ≤ 5.00 mg/m3

Degraded dust ≤ 20.0 mg/m2•h

Sand ≤ 300 mg/m3

Table 6-60 Concentrations of Chemical Activity Materials (Storage Environment)

Chemical Activity Material Content

SO2 ≤ 0.30 mg/m3

H2S ≤ 0.10 mg/m3

NO2 ≤ 0.50 mg/m3

NH3 ≤ 1.00 mg/m3

Cl2 ≤ 0.10 mg/m3

HCI ≤ 0.10 mg/m3

HF ≤ 0.01 mg/m3

O3 ≤ 0.05 mg/m3

6.10.3 Transportation Environment

Climate RequirementThe climate requirements for the ZXWM M920 equipment are described in Table 6-61.

Table 6-61 Climate Requirements

Item Specifications

Altitude ≤ 4000 m


6-44



Item Specifications

Temperature –40 ℃ to +70 ℃

Temperature variance ratio ≤ 1 ℃/min

Relative humidity 5% to 100%




Water-Proof Requirementl Ensure that the packing box of the equipment is in good condition without any

damages.l Waterproofing measures should be taken to prevent rain from leaking into the packing

box of the equipment.l Ensure that there is no water in the transportation tools.

Ecological Environmentl Avoid the propagation of microorganism, such as fungi or mould.l Prevent rodents (such as mouse) from entering the equipment.



Table 6-62 Concentrations of Mechanical Activity Materials (TransportationEnvironment)


Suspended dust No special requirements

Degraded dust ≤ 3.0 mg/m2•h

Sand ≤ 100 mg/m3

Table 6-63 Concentrations of Chemical Activity Materials (Transportation Environment)


SO2 ≤ 0.30 mg/m3

H2S ≤ 0.10 mg/m3

NO2 ≤ 0.50 mg/m3

NH3 ≤ 1.00 mg/m3

6-45




Cl2 ≤ 0.10 mg/m3

HCI ≤ 0.10 mg/m3

HF ≤ 0.01 mg/m3

O3 ≤ 0.05 mg/m3

6.10.4 Operational Environment

Climate RequirementsThe climate requirements for the ZXWMM920 equipment are described in Table 6-64 andTable 6-65.

Table 6-64 Requirements for Temperature and Humidity (Operational Environment)

Item Specification

Long term operation: 0 ºC to +45 ºCAmbient temperature

Short term operation: –5 ºC to +50 ºC

Long term operation: 10% to 90%Relative humidity (35 ºC)

Short term operation: 5% to 95%

• The temperature and humidity are measured 1.5 m above the floor and 0.4 m in front of the equipment.

• Short term operation means that the equipment operates continuously for no more than 96 hours andoperates for no more than 15 days in one year.

Table 6-65 Requirements for Other Climate Factors (Operational Environment)

Item Specifications

Altitude ≤ 4000 m


Temperature variance ratio ≤ 30 ℃/h




Ecological Environmentl Avoid the propagation of microorganism, such as fungi or mould.l Prevent rodents (such as mouse) from entering the equipment.

6-46





Table 6-66 Concentrations of Mechanical Activity Materials (Operational Environment)


Suspended dust ≤ 0.2 mg/m3

Degraded dust ≤ 15 mg/m2•h

Sand ≤ 100 mg/m3

Dust particle ≤ 3×105 /m3

Table 6-67 Concentrations of Chemical Activity Materials (Operational Environment)


SO2 ≤ 0.30 mg/m3

H2S ≤ 0.10 mg/m3

NO2 ≤ 0.50 mg/m3

NH3 ≤ 3.00 mg/m3

Cl2 ≤ 0.10 mg/m3

HCI ≤ 0.10 mg/m3

HF ≤ 0.01 mg/m3

O3 ≤ 0.05 mg/m3

NOx ≤ 0.5 mg/m3

6.11 Electro Magnetic Compatibility RequirementsElectro-Magnetic CompatibilityFor the Electro-Magnetic Compatibility (EMC) specifications of the ZXWM M920 system,refer to Table 6-68.

Table 6-68 EMC Specifications

Test Item Standard

Electrostatic discharge immunity GB/T 17626.2 or IEC 61000-4-2

Immunity to radiation from radio

frequency electromagnetic field

GB/T 17626.3 or IEC 61000-4-3

6-47



Test Item Standard

Electrical fast transient burst immunity GB/T 17626.4 or IEC 61000-4-4

Surge immunity GB/T 17626.5 or IEC 61000-4-5

Radio frequency filed conductivity

immunity

GB/T 17626.6 or IEC 61000-4-6

Radiation Interference GB 9254 or CISPR 22

Conducted Interference GB 9254 or CISPR 22

Electro-Magnetic InterferenceElectro-magnetic Interference (EMI) specifications of the ZXWM M920 system includeconducted disturbance and radiated disturbance, which comply with CISPR 22 (A-levelITE).

6.12 Weight Power Consumption Dimensions

6.12.1 Power Consumption SpecificationsFor the power consumption specifications of boards and units of the ZXWM M920system,refer to Table 6-69.

Table 6-69 Boards and Unit Power Consumption

Board/Unit Maximum PowerConsumption (25℃℃℃)(W)

Maximum Power Consumption(55℃℃℃) (W)

ASMA 80 85

ASMB 80 85

CQ2 85 91

CLK 15 17

CO2 90 98

CH1 55 61

TD2C 28 30

TS2C 18 20

CCP 20 23

EONA 25 38

EOBAH 30 45

EOTU10G 28 39

EOTU10GB 28 39

Board

6-48





FCAG 40 50

FCA 40 50

DSA 25 38

DSAF 22 33

SRM42 20 30

SRM41 33 50

SAUC 32 38

SMUBC 40 48

SMUBL 40 48

FCC 9 10

LO2 90 98

LQ2 85 91

LD2B 53 64

LACG/LACT 3 4

MQT3 120 150

COMB 35 38

COM 32 38

CSUB 12 14

LD2 28 39

CD2 28 39

CS3 68 80

CD3 101 111

LS3 (2slot) 84 (DPSK)

93 (DQPSK)

92 (DPSK)

102 (DQPSK)

LS3 (1slot) 80 (DPSK)

86 (DQPSK)

88 (DPSK)

95 (DQPSK)

EHG1 105 120

EQG2 95 110

CS4 115 135

LS4 140 151

TS4 179 189

MQA1 38 40

6-49





MQA2 38 40

MJA 38 40

MOM2 53 70

MX2 175 185

OPM 5 6

OMCP 5 6

OWM 3 4

EOWM 10 12

EOPM 10 12

OMU 3 (TFF or coupler)

13.2 (AWG)

4 (TFF or coupler)

16 (AWG)

ODU 3 (TFF)

13.2 (AWG)

4 (TFF)

16 (AWG)

OCI 3 4

PWD 10 15

PDU 3 4

SOTU2.5G 24 27

SOTU10G 25 30

SOPCS 3 4

SOPMS 3 4

SRM42 20 30

SRM41 33 50

SOGMD 5 6

SOAD2 4 5

SOAD4 5 6

SEOBA 14 20

SEOPA 11 15

SEOLA 14 20

SSDM 4 5

SOP 5 6

SFANA 10 20

6-50





SPWA 28 55

PWE 10 11

SNP 10 12

SOSCB 17 18

SCC 10 12

TIS 15 20

ETI 11.5 12

EIC 10 8

SEIA 5 6

TST3 90 117

VMUX 30 36

VMUXB 30 36

WBU 15 18

WSU 15 18

WBM 29 35

RPU 45 75

XCA 96 106

Fan plug-in box - 52 100

6.12.2 Dimensions and WeightFor the dimensions and weight of each ZXWM M920 system component, refer to Table6-70 and Table 6-71.

Table 6-70 Dimensions and Weight of ZXWM M920 Components

Component Dimensions (mm) Weight (kg)

CX20 subrack 447 (H) ×535 (W) ×275 (D) 16.00

CX21 subrack 447 (H) ×535 (W) ×275 (D) 16.00

CX30 subrack 897 (H) ×535 (W) × 275 (D) 26.00

CX31 subrack 897 (H) ×535 (W) × 275 (D) 26.00

CX50 subrack 1347 (H) ×535 (W) ×275 (D) 35.00

NX4 subrack 422 (H) × 533 (W) ×286 (D) 12.50

6-51



Component Dimensions (mm) Weight (kg)

NX5 subrack 422 (H) ×473 (W) ×286 (D) 11.00

CX4 subrack 577 (H) ×482.6 (W) ×269.5 (D) 12.00

DX41 subrack 447 (H) × 535 (W) × 275 (D) 16.00

CX51 subrack 1347 (H) ×535 (W) ×275 (D) 35.00

Power distribution box 88.10 (H) ×535 (W) × 240.10 (D) 6.50

DCM plug-in box 42.40 (H) ×495 (W) × 261.20 (D) 5.60

Conversion bracket 29.60 (H) ×345.60 (W) 0.30

30 (H) ×122.90 (W) ×276.80 (D) 0.68Fan unit

42 (H) ×492 (W) ×250 (D) 3.50

SPWA board 235.20 (H) × 43.30 (W) × 212.50 (D) 1.80

SEIA board Front panel: 95.20 (H) × 87.10 (W) × 210 (D) 0.45

• The subrack dimensions include the dimensions of mounting flanges and the front door of the subrack. The subrackweight is that of an empty subrack.

Table 6-71 Board Weights

Board Code Weight (kg)

SNP 0.60

SCC 0.47

SOTU2.5G 0.60

SOTU10G 0.70

SOGMD 0.60

SOAD4 0.60

SOP 0.60

SOPCS 0.60

SOPMS 0.60

DSAF 1.40

SRM42 1.25

SRM41 1.25

SSDM 0.60

SAUC 0.60

SMUBC 1.30

SMUBL 1.30

SPWA 1.80

6-52




SEIA 0.45

SFANA 0.68

TST3 (with DPSK) 3.50

TST3 (with RZ-DQPSK) 3.30

EOTU10G 1.65

EOTU10GB 1.65

EOWM 0.90

EOPM 0.96

EQG2 1.80

ASMA 0.60

SRM42 1.25

SRM41 1.25

FCA 1.50

MQT3 (with DPSK) 3.25

MQT3 (with RZ-DQPSK) 3.005

SEOBA 0.60

SEOPA 0.60

SEOLA 0.60

EOBAH 0.60

EONA 2.00

LAC 1.10

OMU 1.60

ODU 1.60

OCI 1.95

VMUX 2.10

VMUXB 2.10

PDU 1.40

RPU 2.50

WBU 2.60

WSU 2.60

WBM 2.10

OMCP 1.25

OPM 1.15

6-53




OWM 1.10

FCAG 1.45

COM 1.31

COMB 1.31

CCP 0.70

CLK 0.70

XCA 1.85

FCC 0.20

PWD 0.80

CO2 2.0075

LO2 2.0075

LD2B 1.95

CQ2 1.259

EHG1 2.10

LQ2 1.259

CH1 1.10

TD2C 0.60

TS2C 0.60

CS3 1.40

CD3 2.33

LS3 3.25 (occupying two slots)

2.23 (occupying one slot)

CS4 2.20

LS4 2.20

TS4 5.50

TS4R 5.00

MQA1 0.50

MQA2 0.50

MJA 0.60

MOM2 1.50

MX2 3.50

SFANA 0.68

6-54




PWE 0.80

SOSCB 0.50

TIS 0.50

ETI 0.66

EIC 0.50

6-55




6-56


Appendix AStandards andRecommendationsFor standards and recommendations with which the ZXWM M920 system complies, referto Table A-1.

Table A-1 Standards and Recommendations with Which the ZXWM M920 Complies

Standard/Recom-mendation

Description

ITU-T G.661 Definition and test methods for the relevant generic parameters of optical fibre

amplifiers

ITU-T G.662 Generic characteristics of optical fiber amplifier devices and subsystems

ITU-T G.663 Application related aspects of optical fibre amplifier devices and subsystems

ITU-T G.652 Characteristics of a single-mode optical fibre and cable

ITU-T G.653 Characteristics of a dispersion-shifted single-mode optical fibre and cable

ITU-T G.655 Characteristics of a non-zero dispersion-shifted single-mode optical fibre and

cable

ITU-T G.825 The control of jitter and wander within digital networks which are based on the

synchronous digital hierarchy (SDH)

ITU-T G.783 Characteristics of Synchronous Digital Hierarchy (SDH) equipment functional

blocks

ITU-T G.664 Optical safety procedures and requirements for optical transport systems

ITU-T G.665 Definitions and Test Methods for Generic Characteristics of Raman Amplifiers

and Raman Amplified Subsystems

ITU-T G.691 Optical interfaces for single channel STM-64 and other SDH systems with

optical amplifiers

ITU-T G.693 Optical interfaces for intra-office systems

ITU-T G.694.1 Spectral grids for WDM applications: Dense Wavelength Division Multiplexing

(DWDM) frequency grid

ITU-T G.694.2 Spectral Grids for WDM Applications: Coarse Wavelength Division Multiplexing

(CWDM) wavelength Grid

ITU-T G.696.1 Optical transport network physical layer interfaces

ITU-T G.697 Optical monitoring for DWDM systems

A-1




Description

ITU-T G.709 Interfaces for the Optical Transport Network

ITU-T G.798 Characteristics of optical transport network hierarchy equipment functional

blocks

ITU-T G.8201 Error performance parameters and objectives for multi-operator international

paths within the Optical Transport Network (OTN)

ITU-T G.8251 The control of jitter and wander within the Optical Transport Network (OTN)

ITU-T G.873.1 The Automatic Protection Switching (APS) protocol and protection switching

operation for the linear protection schemes for the Optical Transport Network at

the Optical Channel Data Unit (ODUk) level

ITU-T G.874 Management aspects of the Optical Transport Network Element containing

transport functions of one or more of the layer networks of the optical transport

network

ITU-T G.957 Optical interfaces of equipments and systems relating to the synchronous

digital hierarchy

ITU-T G.959.1 Optical transport network physical layer interfaces specifications for optical

networks which may use Wavelength Division Multiplexing (WDM)

ITU-T G.975 Forward error correction for submarine systems

ITU-T G.975.1 Forward error correction for high bit rate DWDM submarine systems

IEEE Std 802.3 Carrier Sense Multiple Access with Collision Detection (CSMA/CD) access

method and physical layer specification

IEC 60825-1 Safety of laser products—Part 1: equipment classification, requirements and

user’s guide

IEC 60825-2 Safety of laser products—Part 2: Safety of optical fiber communication systems

YD/T 1273-2003 Technical specification for terminal equipments of optical Wavelength Division

Multiplexing (WDM)—16×10 Gb/s and 32×10gb/s parts

YD/T 1274-2003 Technical specification for optical wavelength Division Multiplexing (WDM)

system—160×10gb/s and 80×10gb/s parts

YD/T 1159-2001 Test methods of optical Wavelength Division Multiplexing (WDM) system

GB/T 2423.1-2001 Environmental testing for electric and electronic products—Part 2: Test

methods—Tests A: Cold


methods—Tests B: Hot

GB/T 2423.22-

2002

Environmental testing for electric and electronic products—Part 2: Test

methods—Test N: Change of temperature


methods—Test Cb: Damp heat, steady state, primarily for equipment

A-2


Appendix A Standards and Recommendations


Description

GB/T 2423.10-

1997


methods—Test Fc and guidance: Vibration (Sinusoidal)

GB/T 2423.11-

1997


methods—Test Fd: Random vibration wide band—General requirements

GB/T 17618-1998 Information technology equipment—Immunity characteristics—Limits and

methods of measurement

GB 9254-1998 Information technology equipment—Radio disturbance characteristics—Limits

and methods of measurement

GB 4943-2001 Safety of information technology equipment

GB 7247.1-2001 Safety of laser products—Part 1: Equipment classification, requirements and

user’s guide

GB/Z 18461-2001 Safety of laser products—Manufacturer’s checklist for radiation safety of laser

products

A-3




A-4


FiguresFigure 1-1 ZTE WDM Product Family ....................................................................... 1-1

Figure 1-2 Point-to-Point Network Application ........................................................... 1-2

Figure 1-3 Chain Network Application ....................................................................... 1-2

Figure 1-4 Ring Network Application ......................................................................... 1-3

Figure 1-5 Ring-chain Network Application ............................................................... 1-3

Figure 1-6 Tangent Ring Network Application............................................................ 1-3

Figure 1-7 CROSS NETWORK APPLICATION......................................................... 1-4

Figure 1-8 OTM Equipment Operating Principle Diagram......................................... 1-5

Figure 1-9 OTM Equipment Configuration (96-Channel SOTU10G Cabinet 1) ........... 1-6

Figure 1-10 OTM Equipment Configuration (96-Channel SOTU10G Cabinet2) ............................................................................................................ 1-7

Figure 1-11 OTM Equipment Configuration (96-Channel EOTU10G Cabinet1) ............................................................................................................ 1-8

Figure 1-12 OTM Equipment Configuration (96-Channel EOTU10G Cabinet2) ............................................................................................................ 1-9

Figure 1-13 OTM Equipment Configuration (96-Channel EOTU10G Cabinet3) .......................................................................................................... 1-10

Figure 1-14 Optical Connections in OTM Equipment (96-Channel) ......................... 1-11

Figure 1-15 FOADM Equipment Operating Principle Diagram................................ 1-12

Figure 1-16 FOADM Equipment Configuration (SOTU10G) ................................... 1-13

Figure 1-17 FOADM Equipment Configuration (EOTU10G) ................................... 1-14

Figure 1-18 FOADM Equipment Fiber Connections (Unidirectional Add/Drop ofEight Wavelengths)............................................................................... 1-15

Figure 1-19 FOADM Equipment Fiber Connections (Configured with SOGMDBoards)................................................................................................. 1-15

Figure 1-20 Fiber Connections in ROADM Equipment (Configured with WBMBoards)................................................................................................. 1-17

Figure 1-21 Fiber Connections in ROADM Equipment (Configured with WBUBoards)................................................................................................. 1-17

Figure 1-22 Fiber Connections in ROADM Equipment (Configured with WSUBoards)................................................................................................. 1-18

Figure 1-23 Fiber Connections in ROADM Equipment (Three Dimensions)............. 1-18

Figure 1-24 Fiber Connections in ROADM Equipment (Nine Dimensions)............... 1-19

Figure 1-25 Direction Relevance and Wavelength Relevance ................................ 1-21

I



Figure 1-26 Direction Irrelevance and Wavelength Relevance ............................... 1-22

Figure 1-27 Direction Irrelevance and Wavelength Irrelevance ............................... 1-23

Figure 1-28 Direction Relevance and Wavelength Irrelevance ............................... 1-24

Figure 1-29 Function Diagram of OLA Equipment (Without DCMs) ......................... 1-25

Figure 1-30 Function Diagram of OLA Equipment (With DCMs) .............................. 1-25

Figure 1-31 OLA Equipment Configuration (2.5 Gbit/s) ........................................... 1-26

Figure 1-32 OLA Equipment Configuration (10 Gbit/s) ............................................ 1-26

Figure 1-33 OLA Equipment Fiber Connections (2.5 Gbit/s).................................... 1-26

Figure 1-34 OLA Equipment Fiber Connection (10 Gbit/s) ..................................... 1-27

Figure 3-1 OMS 1+1 Protection (Amplification Board Shared ConfigurationMode) ................................................................................................... 3-15

Figure 3-2 OMS 1+1 Protection (Amplification Board Redundancy ConfigurationMode) ................................................................................................... 3-15

Figure 3-3 OCH 1+1 Protection (Chain Network) .................................................... 3-16

Figure 3-4 Schematic Diagram of Two-Fiber Bidirectional OCH SharedProtection ............................................................................................. 3-17

Figure 3-5 Electrical Layer 1+1 Wavelength Protection Configuration at LineSide ...................................................................................................... 3-18

Figure 3-6 Electrical Layer Two-Fiber Bidirectional Channel Shared Ring NetworkProtection Configuration ....................................................................... 3-19

Figure 4-1 ZXWM M920 Cabinet............................................................................... 4-1

Figure 4-2 ZXWM M920 System Architecture ........................................................... 4-3

Figure 5-1 ZXWM M920 Software Architecture ......................................................... 5-1

Figure 5-2 EMS Structure ......................................................................................... 5-2

Figure 5-3 Structure of the NE Control and Processing Software .............................. 5-3

Figure 6-1 Allocation of Uncontinuous Wavelengths................................................. 6-6

II


TablesTable 1-1 Configuration Description ........................................................................ 1-11

Table 1-2 Configuration Description ........................................................................ 1-16

Table 1-3 Direction/Wavelength Correlation ............................................................ 1-20

Table 1-4 Configuration Description ........................................................................ 1-27

Table 2-1 FEC List .................................................................................................... 2-1

Table 2-2 Maximum Number of Slave Subracks for a Single Master Subrack............ 2-5

Table 3-1 Transmission System at 10×2.5 Gbit/s ...................................................... 3-2

Table 3-2 Transmission Codes Supported by the 40/48×10 Gbit/s System................ 3-3




Table 3-6 Transmission Codes Supported by the 80×100 Gbit/s System (G.652 +DCM) ....................................................................................................... 3-4

Table 3-7 Transmission Codes Supported by the 80×100 Gbit/s System (G.652 -DCM) ....................................................................................................... 3-4

Table 3-8 Transmission Codes Supported by the 80×100 Gbit/s System (G.655 +DCM) ....................................................................................................... 3-5

Table 3-9 Transmission Codes Supported by the 80×100 Gbit/s System (G.655 -DCM) ....................................................................................................... 3-5

Table 3-10 Boards Supporting the Wavelength Tunable Function.............................. 3-7

Table 3-11 Services Admittable by the ZXWM M920 System .................................... 3-8

Table 3-12 ZXWM M920 Service Aggregation Functions........................................... 3-9

Table 3-13 ZXWM M920 Optical Supervisory Channel ............................................ 3-10

Table 3-14 ZXWM M920 Electrical Supervisory Channel........................................ 3-10

Table 3-15 Communication Functions of the ZXWM M920 System ......................... 3-11

Table 3-16 Alarm List .............................................................................................. 3-12

Table 3-17 ZXWM M920 Cross-Connect Board Protection...................................... 3-14

Table 3-18 Description of Electrical Layer 1+1 Wavelength ProtectionConfiguration ......................................................................................... 3-18

Table 3-19 时钟传递方式一览 .......................................................................... 3-21

Table 4-1 ZXWM M920 Cabinet Configuration .......................................................... 4-2

Table 4-2 Subsystem Configurations......................................................................... 4-3

Table 5-1 NE Control and Processing Software Functions ........................................ 5-3

III



Table 5-2 Functional Modules of the NE Control and Processing Software................ 5-3

Table 5-3 ZXWM M920 Software System Interfaces ................................................. 5-4

Table 6-1 Wavelength Allocation (40 Channels in C Band with Spacing at 100GHz) .......................................................................................................6-1

Table 6-2 Wavelength Allocation (80 Channels in C Band with Spacing at 50 GHz)................................................................................................................ 6-2

Table 6-3 Wavelength Allocation (48/96 Channels in Extended C Band withSpacing at 100 Ghz/50 Ghz) ................................................................... 6-4

Table 6-4 Uncontinuous Wavelengths and Corresponding CentralFrequencies ............................................................................................. 6-6

Table 6-5 Board Types .............................................................................................. 6-7

Table 6-6 Line-Side Interface Specifications of the 2.5 G Board ................................ 6-7

Table 6-7 Line-Side Interface Specifications of the 10 G Board ................................. 6-8

Table 6-8 Line-Side Interface Specifications of the 40 G Board ................................. 6-9

Table 6-9 Line-Side Interface Specifications of the 100 G Board ............................. 6-10

Table 6-10 Technical Specifications of the SOAD2 Board ....................................... 6-11

Table 6-11 Technical Specifications of the SOAD4 Board........................................ 6-12

Table 6-12 Technical Specifications the OMU Board (8/16/32-Channel) .................. 6-13

Table 6-13 Technical Specifications of the OMU Board (40/48/80-Channel) ............ 6-13

Table 6-14 Technical Specifications of the ODU Board ........................................... 6-14

Table 6-15 Technical Specifications of the ODUB Board ........................................ 6-15

Table 6-16 Technical Specifications of the OCI Board (50 GHz to 100 GHz) ........... 6-15

Table 6-17 Technical Specifications of the VMUX Board ........................................ 6-16

Table 6-18 Technical Specifications of the VMUXB Board ...................................... 6-16

Table 6-19 Technical Specifications of the SSDMT Board ...................................... 6-17

Table 6-20 Technical Specifications of the SSDMR Board ...................................... 6-18

Table 6-21 Technical Specifications of the SOGMD Board ..................................... 6-18

Table 6-22 Technical Specifications of the WBU Board .......................................... 6-19

Table 6-23 Technical Specifications of the WSUD Board ........................................ 6-19

Table 6-24 Technical Specifications of the WSUA Board ........................................ 6-20

Table 6-25 Technical Specifications of the WBM Board .......................................... 6-21

Table 6-26 Technical Specifications for the PDU-4-x Board..................................... 6-22




Table 6-30 Technical Specifications for the PDU-16-x Board ................................... 6-23

IV


Tables

Table 6-31 Technical Specifications of the 40/80-Channel C-Band SEOBABoard..................................................................................................... 6-23

Table 6-32 Technical Specifications of the 40/80-Channel C-Band SEOPABoard..................................................................................................... 6-24

Table 6-33 Technical Specifications of the 40/80-Channel C-Band SEOLABoard..................................................................................................... 6-25

Table 6-34 Technical Specifications of the 40/80-Channel C-Band EOBAHBoard..................................................................................................... 6-26

Table 6-35 Technical Specifications of the 48/96-Channel CE-Band EOBAHBoard..................................................................................................... 6-28

Table 6-36 Technical Specifications of the 40/80-Channel C-Band EONABoard..................................................................................................... 6-29

Table 6-37 Technical Specifications of the 48/96-Channel CE-Band EONABoard..................................................................................................... 6-30

Table 6-38 Technical Specifications of the DRA Board ............................................ 6-31

Table 6-39 Technical Specifications of the EOA and DRABoard Combination ........... 6-32

Table 6-40 Technical Specifications of the LAC Board............................................. 6-33

Table 6-41 Technical Specifications of the OPM Board (50 GHz) ............................ 6-33

Table 6-42 Technical Specifications of the OPM Board (100 GHz) .......................... 6-33

Table 6-43 Technical Specifications of the EOPM Board (50 GHz) .......................... 6-34

Table 6-44 Technical Specifications of the EOPM Board (100 GHz) ........................ 6-34

Table 6-45 Technical Specifications of the OWM Board .......................................... 6-35

Table 6-46 Technical Specifications of the EOWM Board ....................................... 6-35

Table 6-47 Technical Specifications of the SOP Board ........................................... 6-36

Table 6-48 Technical Specifications of the SOPCS Board ....................................... 6-36

Table 6-49 .............................................................................................................. 6-37

Table 6-50 Technical Specifications of the SOPMS Board....................................... 6-37

Table 6-51 Technical Specifications for the SOSCB Board ...................................... 6-38

Table 6-52 CCP Board Technical Specifications...................................................... 6-39

Table 6-53 Transmission Codes Supported by the RPOA Subsystem (over aSingle Span) .......................................................................................... 6-39

Table 6-54 RPOA Subsystem Optical Specifications ............................................... 6-40

Table 6-55 DCM Technical Specifications (G.652 Optical Fiber) .............................. 6-41

Table 6-56 DCM Technical Specifications (G.655 LEAF Optical Fiber) .................... 6-41

Table 6-57 Power Supply Requirements ................................................................. 6-43

Table 6-58 Climate Requirements (Storage Environment) ....................................... 6-43

V



Table 6-59 Concentrations of Mechanical Activity Materials (StorageEnvironment) ......................................................................................... 6-44

Table 6-60 Concentrations of Chemical Activity Materials (StorageEnvironment) ......................................................................................... 6-44

Table 6-61 Climate Requirements ........................................................................... 6-44

Table 6-62 Concentrations of Mechanical Activity Materials (TransportationEnvironment) ......................................................................................... 6-45

Table 6-63 Concentrations of Chemical Activity Materials (TransportationEnvironment) ......................................................................................... 6-45

Table 6-64 Requirements for Temperature and Humidity (OperationalEnvironment) ......................................................................................... 6-46

Table 6-65 Requirements for Other Climate Factors (OperationalEnvironment) ......................................................................................... 6-46

Table 6-66 Concentrations of Mechanical Activity Materials (OperationalEnvironment) ......................................................................................... 6-47

Table 6-67 Concentrations of Chemical Activity Materials (OperationalEnvironment) ......................................................................................... 6-47

Table 6-68 EMC Specifications ............................................................................... 6-47

Table 6-69 Boards and Unit Power Consumption .................................................... 6-48

Table 6-70 Dimensions and Weight of ZXWM M920 Components........................... 6-51

Table 6-71 Board Weights....................................................................................... 6-52

Table A-1 Standards and Recommendations with Which the ZXWM M920Complies..................................................................................................A-1

VI


GlossaryAFEC- Advanced Forward Error Correction

APC- Automatic Power Control

APO- Automatic Power Optimization

APR- Automatic Power Reduction

APS- Automatic Protection Switching

APSD- Automatic Power Shutdown

ATM- Asynchronous Transfer Mode

AWG- Array Waveguide Grating

BC- Boundary Clock

BITS- Building Integrated Timing Supply

BMC- Best Master Clock

CWDM- Coarse Wavelength Division Multiplexing

DCF- Dispersion Compensation Fiber

DCM- Dispersion Compensation Module

DRA- Distributed RAMAN fiber Amplifier

DVB- Digital Video Broadcasting

DWDM- Dense Wavelength Division Multiplexing

VII



ECC- Embedded Control Channel

ECC- Error Check and Correction

EDF- Erbium Doped Fiber

EDFA- Erbium Doped Fiber Amplifier

EMC- Electro Magnetic Compatibility

EMI- Electromagnetic Interference

EMS- Element Management System

ESCON- Enterprise System Connection

FEC- Forward Error Correction

FICON- Fiber Connection

FOADM- Fixed Optical Add/Drop Multiplexer

GCC- General Communication Channel

GFP- Generic Framing Procedure

GUI- Graphical User Interface

HD-FEC- Hard Decision Forward Error Correction

HDTV- High Definition Television

IP- Internet Protocol

ITU-T- International Telecommunication Union - Telecommunication StandardizationSector

IWF- Integrated Wavelength Feedback

VIII


Glossary

LAN- Local Area Network

LOF- Loss of Frame

MAN- Metropolitan Area Network

NE- Network Element

OC- Ordinary Clock

OCH- Optical Channel

OLA- Optical Line Amplifier

OMS- Optical Multiplex Section

OSC- Optical Supervision Channel

OSNR- Optical Signal-to-Noise Ratio

OSPF- Open Shortest Path First

OTM- Optical Terminal Multiplexer

OTN- Optical Transport Network

PDH- Plesiochronous Digital Hierarchy

PDL- Polarization Dependent Loss

PMD- Polarization Mode Dispersion

POS- Packet Over SONET/SDH

ROADM- Reconfigurable Optical Add/Drop Multiplexer

RPOA- Remotely Pumped Optical Amplifier

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SD-FEC- Soft Decision Forward Error Correction

SDH- Synchronous Digital Hierarchy

SFP- Small Form-factor Pluggable

SNR- Signal to Noise Ratio

SONET- Synchronous Optical Network

SSM- Synchronization Status Message

TC- Transparent Clock

TCP- Transmission Control Protocol

TFF- Thin Film Filter

TIM- Trace Identifier Mismatch

TTI- Trail Trace Identifier

VOA- Variable Optical Attenuator

WDM- Wavelength Division Multiplexing

XFP- 10-Gigabit Small Form-Factor Pluggable

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