Opti x osn 7500 product description

Product Description

OptiX OSN 7500 Intelligent Optical Switching
System
V100R009

Issue 01

Date 2009-01-10

HUAWEI TECHNOLOGIES CO., LTD.

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Issue 01 (2009-01-10) Commercial in Confidence Page 2 of 223


OptiX OSN 7500 Intelligent Optical Switching System V100R009
Product Description

About This Document

Author
Prepared by Date
Reviewed by Date

Approved by Date

Summary
This document includes:

Chapter Description

1 Network Application Describes the OptiX OSN 7500 and its position in the
network.
2 Function This chapter generally describes the features of the
OptiX OSN 7500 in the terms of capacity, interface,
boards, OAM and other functions.
3 Hardware Describes the mechanical structure and the
adaptable cabinet installation of the OptiX OSN
7500.
4 Software Architecture Describes the software system of the OptiX OSN
7500. It includes intelligent software, board software,
NE software and NM software.
5 Data Features Describes the Ethernet, RPR and ATM features of
the OptiX OSN 7500 in terms of function, application
and protection.
6 ASON Features This chapter introduces the ASON features of the
OptiX OSN 7500 in terms of service classes and
application.
7 Protection Describes protection modes (including equipment
level and network level) and characteristics
supported by the OptiX OSN 7500.



Product Description

8 OAM This chapter describes main technical characteristics
of the OptiX OSN 7500 in terms of maintenance and
centralized management.
9 Security Management This chapter describes main technical characteristics
of the OptiX OSN 7500 in terms of safe operation.
10 Technical Specifications This chapter describes the hardware dimension,
interface specifications, transmission performance,
environment requirements and power specification
for the OptiX OSN 7500.
10.8 Power Consumption This appendix lists the power consumption and
and Weight of Each Board weight of the boards that are configured on the OptiX
OSN 7500.
11 Compliant Standards This appendix lists international standards to which
the OptiX OSN 7500 conforms in terms of design and
performance.
12 Glossary This appendix lists the terms used in this document.
13 Acronyms and The appendix lists the acronyms and abbreviations
Abbreviations used in this document.



Product Description

History
Issue Details Date Author Approved by



Product Description

Contents

1 Network Application......................................................................................................11
2 Function ........................................................................................................................ 14
2.1 Capacity .......................................................................................................................................... 14
2.1.1 Cross-Connect Capacity ........................................................................................................ 14
2.1.2 Microwave Capacity ............................................................................................................... 15
2.1.3 Slot Access Capacity.............................................................................................................. 16
2.2 Service ............................................................................................................................................ 17
2.2.1 Service Type .......................................................................................................................... 17
2.2.2 Service Access Capacity........................................................................................................ 18
2.3 Interface .......................................................................................................................................... 19
2.3.1 Service Interfaces .................................................................................................................. 20
2.3.2 Administration and Auxiliary Interfaces .................................................................................. 21
2.4 Networking Topology ...................................................................................................................... 21
2.5 Protection........................................................................................................................................ 23
2.5.1 Equipment Level Protection ................................................................................................... 24
2.5.2 Network Level Protection ....................................................................................................... 24
2.6 Board REG Function....................................................................................................................... 25
2.7 ASON Features............................................................................................................................... 27
2.8 Built-in WDM Technology................................................................................................................ 27
2.9 Microwave Technology ................................................................................................................... 28
2.10 110 V/220 V Power Supply ........................................................................................................... 28
2.11 Clock ............................................................................................................................................. 29
2.12 High Precise Timing...................................................................................................................... 29
2.13 OAM Information Interworking ...................................................................................................... 30
2.14 OAM.............................................................................................................................................. 31
2.14.1 Software Package Loading .................................................................................................. 32
2.14.2 Hot Patch ............................................................................................................................. 33
2.14.3 NSF Function ....................................................................................................................... 33
2.14.4 Board Version Replacement ................................................................................................ 33
2.14.5 PRBS Function..................................................................................................................... 34
2.14.6 Inter-Board Alarm Suppression............................................................................................ 34
2.14.7 TCM...................................................................................................................................... 35
2.14.8 ETH-OAM............................................................................................................................. 35
2.15 Security Management................................................................................................................... 36



Product Description

3 Hardware....................................................................................................................... 37
3.1 Overview ......................................................................................................................................... 37
3.2 Cabinet............................................................................................................................................ 39
3.3 Subrack........................................................................................................................................... 40
3.3.1 Structure................................................................................................................................. 41
3.3.2 Slot Allocation......................................................................................................................... 42
3.4 Boards............................................................................................................................................. 44
3.4.1 Classification of the Boards ................................................................................................... 44
3.4.2 Cross-Connect and System Control Boards .......................................................................... 50
3.4.3 SDH Processing Boards ........................................................................................................ 51
3.4.4 PDH Processing Boards ........................................................................................................ 56
3.4.5 Data Processing Boards ........................................................................................................ 57
3.4.6 WDM Boards.......................................................................................................................... 61
3.4.7 Microwave Boards.................................................................................................................. 62
3.4.8 Optical Booster Amplifier Boards ........................................................................................... 62
3.4.9 Other Boards.......................................................................................................................... 63

4 Software Architecture .................................................................................................. 65
4.1 Overview ......................................................................................................................................... 65
4.2 Communication Protocols............................................................................................................... 66
4.3 Board Software ............................................................................................................................... 66
4.4 NE Software.................................................................................................................................... 66
4.5 Network Management System........................................................................................................ 67
4.6 ASON Software............................................................................................................................... 68

5 Data Features................................................................................................................ 70
5.1 Ethernet Features ........................................................................................................................... 70
5.1.1 Functions................................................................................................................................ 70
5.1.2 Application.............................................................................................................................. 81
5.1.3 Protection ............................................................................................................................... 85
5.2 RPR Features ................................................................................................................................. 86
5.2.2 Functions................................................................................................................................ 88
5.2.3 Application.............................................................................................................................. 91
5.2.4 Protection ............................................................................................................................... 93
5.3 ATM Features.................................................................................................................................. 94
5.3.1 Functions................................................................................................................................ 94
5.3.2 Application.............................................................................................................................. 97
5.3.3 Protection ............................................................................................................................. 100
5.4 DDN Features ............................................................................................................................... 100
5.4.1 Functions.............................................................................................................................. 101
5.4.2 Application............................................................................................................................ 101
5.4.3 Protection ............................................................................................................................. 102
5.5 SAN Features ............................................................................................................................... 103



Product Description

6 ASON Features ........................................................................................................... 104
6.1 Automatic Discovery of the Topologies ......................................................................................... 104
6.1.1 Auto-Discovery of Control Links........................................................................................... 104
6.1.2 Auto-Discovery of TE Links .................................................................................................. 106
6.2 End-to-End Service Configuration ................................................................................................ 106
6.3 Mesh Networking Protection and Restoration .............................................................................. 107
6.4 ASON Clock Tracing ..................................................................................................................... 108
6.5 SLA ............................................................................................................................................... 111
6.6 Diamond Services......................................................................................................................... 113
6.7 Gold Services ............................................................................................................................... 117
6.8 Silver Services .............................................................................................................................. 119
6.9 Copper Services ........................................................................................................................... 121
6.10 Iron Services ............................................................................................................................... 122
6.11 Tunnels........................................................................................................................................ 123
6.12 Service Association..................................................................................................................... 126
6.13 Service Optimization................................................................................................................... 127
6.14 Service Migration ........................................................................................................................ 127
6.15 Reverting Services to Original Routes........................................................................................ 128
6.16 Preset Restoring Trail ................................................................................................................. 128
6.17 Shared Mesh Restoration Trail ................................................................................................... 128
6.18 Shared Risk Link Group.............................................................................................................. 130
6.19 Amalgamation of ASON and LCAS ............................................................................................ 130

7 Protection ................................................................................................................... 132
7.1 Equipment Level Protection.......................................................................................................... 132
7.1.1 TPS Protection ..................................................................................................................... 133
7.1.2 1+1 Hot Backup for the Cross-Connect and Timing Units ................................................... 134
7.1.3 1+1 Hot Backup for the SCC Unit ........................................................................................ 134
7.1.4 1+1 Protection for Ethernet Boards ..................................................................................... 135
7.1.5 1+1 Protection for ATM Boards ............................................................................................ 136
7.1.6 Protection for the Microwave Boards ................................................................................... 137
7.1.7 1+1 Hot Backup for the Power Interface Unit ...................................................................... 138
7.1.8 Protection for the Wavelength Conversion Unit ................................................................... 138
7.1.9 Intelligent Fans..................................................................................................................... 139
7.1.10 1:N Protection for the +3.3 V Board Power Supply ........................................................... 139
7.1.11 Board Protection Schemes Under Abnormal Conditions ................................................... 139
7.2 Network Level Protection.............................................................................................................. 140
7.2.1 Linear MSP .......................................................................................................................... 141
7.2.2 MSP Ring ............................................................................................................................. 141
7.2.3 SNCP ................................................................................................................................... 142
7.2.4 DNI ....................................................................................................................................... 146
7.2.5 Fiber-Shared Virtual Trail Protection.................................................................................... 147



Product Description

7.2.6 Optical-Path-Shared MSP.................................................................................................... 147
7.2.7 RPR Protection .................................................................................................................... 149
7.2.8 VP-Ring/VC-Ring Protection................................................................................................ 150

8 OAM............................................................................................................................. 152
8.1 Operation and Maintenance ......................................................................................................... 152
8.2 Network Management................................................................................................................... 154

9 Security Management ................................................................................................ 155
9.1 Authentication Management ......................................................................................................... 155
9.2 Authorization Management ........................................................................................................... 155
9.3 Network Security Management..................................................................................................... 156
9.4 System Security Management...................................................................................................... 156
9.5 Log Management.......................................................................................................................... 157
9.5.1 NE Security Log Management ............................................................................................. 157
9.5.2 Syslog Management ............................................................................................................ 157

10 Technical Specifications.......................................................................................... 159
10.1 Overall Specifications of the Equipment ..................................................................................... 159
10.1.1 Specifications of the Cabinet.............................................................................................. 160
10.1.2 Specifications of the Subrack............................................................................................. 160
10.1.3 Power Supply Parameters ................................................................................................. 161
10.1.4 Timeslot Numbering ........................................................................................................... 161
10.1.5 Laser Safety Class ............................................................................................................. 162
10.1.6 Timing and Synchronization Performance ......................................................................... 162
10.1.7 Transmission Performance ................................................................................................ 163
10.1.8 Protection Performance ..................................................................................................... 163
10.1.9 Electromagnetic Compatibility............................................................................................ 165
10.1.10 Environmental Specification............................................................................................. 166
10.2 Parameters Specified for the Optical Interfaces ......................................................................... 167
10.2.1 STM-1 Optical Interfaces ................................................................................................... 168
10.2.2 STM-4 Optical Interfaces ................................................................................................... 168
10.2.3 STM-16 Optical Interfaces ................................................................................................. 169
10.2.4 STM-64 Optical Interfaces ................................................................................................. 171
10.2.5 Colored Optical Interfaces ................................................................................................. 173
10.2.6 Wavelength Allocation........................................................................................................ 174
10.2.7 Ethernet Optical Interfaces ................................................................................................ 175
10.2.8 ATM Optical Interfaces ....................................................................................................... 176
10.3 Parameters Specified for the Electrical Interfaces...................................................................... 177
10.3.1 PDH Electrical Interfaces ................................................................................................... 178
10.3.2 DDN Electrical Interfaces................................................................................................... 178
10.4 Parameters Specified for the Auxiliary Interfaces ....................................................................... 179
10.4.1 Clock Interface Specifications ............................................................................................ 179
10.4.2 64 kbit/s Interface Specifications........................................................................................ 180



Product Description

10.4.3 RS-232 Interface Specifications......................................................................................... 180
10.4.4 RS-422 Interface Specifications......................................................................................... 180
10.4.5 Orderwire Phone Interface Specifications.......................................................................... 181
10.5 Microwave RF Performance ....................................................................................................... 181
10.5.1 Radio Work Modes............................................................................................................. 182
10.5.2 Frequency Band................................................................................................................. 183
10.5.3 Receiver Sensitivity............................................................................................................ 184
10.5.4 Transceiver Performance................................................................................................... 186
10.5.5 Anti-Multipath Fading Performance.................................................................................... 189
10.5.6 IF Performance .................................................................................................................. 190
10.5.7 Baseband Signal Processing Performance of the Modem ................................................ 190
10.5.8 Equipment Reliability ......................................................................................................... 190
10.6 Safety Certification...................................................................................................................... 191
10.7 Environmental Conditions ........................................................................................................... 192
10.7.1 Environment for Storage .................................................................................................... 192
10.7.2 Environment for Transportation.......................................................................................... 194
10.7.3 Environment for Operation................................................................................................. 197
10.8 Power Consumption and Weight of Each Board ........................................................................ 199

11 Compliant Standards ............................................................................................... 203
11.1 ITU-T Recommendations ............................................................................................................ 203
11.2 IEEE Standards........................................................................................................................... 205
11.3 IETF Standards ........................................................................................................................... 206
11.4 ANSI Standards........................................................................................................................... 207
11.5 Environment Related Standards ................................................................................................. 207
11.6 EMC Standards ........................................................................................................................... 208
11.7 Safety Compliance Standards..................................................................................................... 208
11.8 Protection Standards................................................................................................................... 209
11.9 ASON Standards ......................................................................................................................... 209
11.10 Microwave Standards................................................................................................................ 210

12 Glossary.................................................................................................................... 213
13 Acronyms and Abbreviations.................................................................................. 219



Product Description

1 Network Application

This chapter describes the position and application of the OptiX OSN 7500 intelligent
optical switching system (the OptiX OSN 7500) in an optical transmission network.
The OptiX OSN 7500 is the optical core switching (OCS) equipment. It is a next
generation equipment that Huawei has developed based on the type of metropolitan
area network (MAN) and its development trend in the future.
As an intelligent optical core switching system with large capacity, the OptiX OSN
7500 is mainly used at the backbone layer of the MAN to groom and transmit various
services with different granularities.
The OptiX OSN 7500 has 360 Gbit/s higher order and 80 Gbit/s lower order
cross-connect capacities, and features large switching capacity.
The OptiX OSN 7500 integrates the following technologies:
l Synchronous digital hierarchy (SDH)
l Plesiochronous digital hierarchy (PDH)
l Ethernet
l Asynchronous transfer mode (ATM)
l Storage area network (SAN)
l Wavelength division multiplexing (WDM)
l Digital data network (DDN)
l Automatically switched optical network (ASON)
l Microwave Technology
Figure 1-1 shows the appearance of the OptiX OSN 7500.



Product Description

Figure 1-1 Appearance of the OptiX OSN 7500

As a system used at a higher layer, the OptiX OSN 7500 can be networked with the
following equipment to provide a complete MAN solution:
l OptiX OSN 9500
l OptiX OSN 3500
l OptiX OSN 3500T
l OptiX OSN 3500 II
l OptiX OSN 2500
l OptiX OSN 2500 REG
l OptiX OSN 1500
Figure 1-2 shows the application of the OptiX OSN 7500 in a transmission network.



Product Description

Figure 1-2 Network application of the OptiX OSN 7500
OptiX OSN 3500 II
OptiX OSN 3500T OptiX OSN 9500
OptiX OSN 3500 OptiX OSN 7500

Backbone
layer

OptiX OSN 3500 II
OptiX OSN 3500T

Convergence
layer


Access
layer

GSM/CDMA/ Microwave
WCDMA/TD- PSTN Ethernet ... ATM SAN
Technology
SCDMA

Global System for Mobile Communications (GSM)
Code Division Multiple Access (CDMA)
Wideband Code Division Multiple Access (WDMA)
Time Division-Synchronous Code Division Multiple Access (TD-SCDMA)
Public Switched Telephony Network (PSTN)
Storage Area Network (SAN)
Ethernet
Microwave Technology

As an intelligent multiservice switching and transmission system, the OptiX OSN 7500
can be used as follows:
l A core convergence node for a large city
l An optical core switching (OCS) system for a medium or small city
l A service grooming node on a provincial trunk



Product Description

2 Function

2.1 Capacity
The capacity covers the cross-connect capacity and slot access capacity.
2.1.1 Cross-Connect Capacity
Different cross-connect boards have different cross-connect capacities.
2.1.2 Microwave Capacity
The number of IFSD1 boards that can be configured for different types of the OptiX
OSN equipment is different. Hence, the number of microwave directions supported by
different types of the OptiX OSN equipment is also different.
2.1.3 Slot Access Capacity
The slot access capacity varies according to the cross-connect boards.

2.1.1 Cross-Connect Capacity
Different cross-connect boards have different cross-connect capacities.
The OptiX OSN 7500 provides the following cross-connect boards: T1GXCSA,
T1EXCSA, T2UXCSA, T1SXCSA and T1IXCSA. Table 2-1 lists their cross-connect
capacities.

Table 2-1 Cross-connect capacity
Board Higher-Order Lower-Order Cross-Connect Access
Cross-Connect Capacity Capacity of
Capacity Single
Subrack

T1GXCSA 240 Gbit/s (1536 x 20 Gbit/s (128 x 128 VC-4), 200 Gbit/s
1536 VC-4) equivalent to (8064 x 8064 (1280 x
VC-12) or (384 x 384 VC-3) 1280 VC-4)
T1EXCSAa 240 Gbit/s (1536 x 40 Gbit/s (256 x 256 VC-4), 200 Gbit/s
VC-12) or (768 x 768 VC-3) 1280 VC-4)



Product Description

Board Higher-Order Lower-Order Cross-Connect Access
Cross-Connect Capacity Capacity of
Capacity Single
Subrack

T2UXCSA 360 Gbit/s (2304 x 20 Gbit/s (128 x 128 VC-4) 280 Gbit/s
VC-12) or (384 x 384 VC-3) 1792 VC-4)
T1SXCSA 360 Gbit/s (2304 x 40 Gbit/s (256 x 256 VC-4) 280 Gbit/s
VC-12) or (768 x 768 VC-3) 1792 VC-4)
T1IXCSA 360 Gbit/s (2304 x 80 Gbit/s (512 x 512 VC-4) 280 Gbit/s
2304 VC-4) equivalent to (32256×32256 (1792 x
VC-12) or (1536×1536 VC-3) 1792 VC-4)
a: The T1EXCSA board cannot be used with any line board of the N2 series (except
the N2SLQ16). As the T2SL64 board is no longer manufactured, it can be replaced
by the T2SL64A board, without affecting the services. It is recommended to use the
T1EXCSA board with the T2SL64A board.

2.1.2 Microwave Capacity
The number of IFSD1 boards that can be configured for different types of the OptiX
OSN equipment is different. Hence, the number of microwave directions supported by
different types of the OptiX OSN equipment is also different.
Table 2-2 lists the maximum number of IF boards and the maximum number of
microwave directions supported by different types of the OptiX OSN equipment.

Table 2-2 Microwave capacity of the OptiX OSN equipment
Maximum Supported
Maximum Number of
Equipment Type Microwave Capacity
Configured IF Boards
(Channel)

OptiX OSN 1500A 2 4
OptiX OSN 1500B 1 2
OptiX OSN 2500 5 10
OptiX OSN 3500 10 20
OptiX OSN 10 20
3500T(19inch)
OptiX OSN 3500II 10 20
OptiX OSN 7500 15 30



Product Description

2.1.3 Slot Access Capacity
The slot access capacity varies according to the cross-connect boards.
The OptiX OSN 7500 provides 22 service slots. The maximum access capacity varies
according to the cross-connect and timing boards installed.
Figure 2-1 shows the access capacity of service slots when the T1GXCSA/T1EXCSA
is used.

Figure 2-1 Access capacity of service slots when the T1GXCSA/T1EXCSA is used

S S S S S S S S S S S S S SLOT S S S S S
L L L L L L L L L L L L L 32 L L L L L
O O O O O O O O O O O O O O O O O O

PIU(A)
T T T T T T T T T T T T T T T T T T
1 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3
9 0 1 2 3 4 5 6 7 8 9 0 1 4 5 6 7 8
SLOT
33
GSCC(A)
GSCC(B)
10 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s
EOW

PIU(B)

AUX
Fiber routing

FANA FANA FANA

S S S S S S S S S S S S S S S S S S
L L L L L L L L L L L L L L L L L L
1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 1 1 1
0 1 2 3 4 5 6 7 8
GXCSA(A) /

GXCSA(B) /
EXCSA(A)

EXCSA(B)
10 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s

10 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s
5 Gbit/s
5 Gbit/s

5 Gbit/s
5 Gbit/s

Fiber routing Fiber routing

（ A ） : Active （ B ） : Standby

Figure 2-2 shows the access capacity of service slots when the
T2UXCSA/T1SXCSA/T1IXCSA is used.



Product Description

Figure 2-2 Access capacity of service slots when the T2UXCSA/T1SXCSA/T1IXCSA is
used

S S S S S S S S S S S S S SLOT S S S S S
L L L L L L L L L L L L L 32 L L L L L

PIU(A)
1 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3
9 0 1 2 3 4 5 6 7 8 9 0 1 4 5 6 7 8
SLOT
33

GSCC(A)
GSCC(B)
10 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s
20 Gbit/s
20 Gbit/s
EOW

PIU(B)

AUX
Fiber routing

FANA FANA FANA

S S S S S S S S S S S S S S S S S S
L L L L L L L L L L L L L L L L L L
1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 1 1 1
0 1 2 3 4 5 6 7 8
UXCSA(A) /SXCSA(A)/

UXCSA(B) /SXCSA(B)/
10 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s
20 Gbit/s
20 Gbit/s

20 Gbit/s
20 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s
10 Gbit/s

10 Gbit/s
10 Gbit/s
IXCSA(A)

IXCSA(B)

Fiber routing Fiber routing

（ A ） : Active （ B ） : Standby

2.2 Service
The supported services are SDH services, PDH services and other services.
2.2.1 Service Type
The OptiX OSN 7500 can process following types of services : SDH, PDH, Ethernet,
RPR, ATM, DDN and SAN services.
2.2.2 Service Access Capacity
The capacity of services that the OptiX OSN 7500 can access varies according to the
type and quantity of the configured boards.

2.2.1 Service Type
The OptiX OSN 7500 can process following types of services : SDH, PDH, Ethernet,
RPR, ATM, DDN and SAN services.
For details about supported service types, refer to Table 2-3.



Product Description

Table 2-3 Service type supported by the OptiX OSN 7500
Service Type Description

SDH services l Standard SDH services: STM-1/4/16/64
l Standard SDH concatenated services:
VC-4-4c/VC-4-16c/VC-4-64c
l Standard SDH virtual concatenation services: VC4-Xv
(X≤8), VC3-Xv (X≤24)
l SDH services with FEC: 10.709 Gbit/s, 2.666 Gbit/s
PDH services l E1/T1 service
l E3/T3 service
l E4 service
NOTE
With the E13/M13 function, the equipment can perform multiplexing
and demultiplexing between E1/T1 signals and E3/T3 signals.

Ethernet services l Ethernet private line (EPL) service
l Ethernet virtual private line (EVPL) service
l Ethernet private LAN (EPLAN) service
l Ethernet virtual private LAN (EVPLAN) service
RPR services l EVPL service
l EVPLAN service
ATM services l Constant bit rate (CBR) service
l Real-time variable bite rate (rt-VBR) service
l Non real-time variable bite rate (nrt-VBR) service
l Unspecified bit rate (UBR) service
DDN services l N x 64 kbit/s (N=1-31) service
l Framed E1 service
SAN services l Fiber channel (FC) service
l Fiber connection (FICON) service
l Enterprise systems connection (ESCON) service
l Digital video broadcast-asynchronous serial interface
(DVB-ASI) service

2.2.2 Service Access Capacity
The capacity of services that the OptiX OSN 7500 can access varies according to the
type and quantity of the configured boards.
Table 2-4 lists the maximum capacity of the OptiX OSN 7500 for accessing different
services.



Product Description

Table 2-4 Service access capacity of the OptiX OSN 7500
Service Type Maximum Number of Services
Supported by a Single Subrack
STM-64 standard or concatenated 28
service
STM-64 (FEC) service 17
service
STM-16 (FEC) service 22
service
STM-1 standard service 280
STM-1 (electrical) service 66
E4 service 16
E3/T3 service 102
E1/T1 service 252
N x 64 kbit/s service (N: 1–31) 32
Framed E1 service 32
FE service 208
GE service 88
10GE service 44
STM-1 ATM service 88
STM-4 ATM service 22
ESCON service 88
FICON/FC100 service 44
FC200 service 22
DVB-ASI service 88

2.3 Interface
The interfaces include service interfaces, administration and auxiliary interfaces.
2.3.1 Service Interfaces
Service interfaces include SDH service interfaces and PDH service interfaces.



Product Description

2.3.2 Administration and Auxiliary Interfaces
The equipment provides several types of administration and auxiliary interfaces.

2.3.1 Service Interfaces
Service interfaces include SDH service interfaces and PDH service interfaces.
Table 2-5 lists the service interfaces of the OptiX OSN 7500.

Table 2-5 Service interfaces of the OptiX OSN 7500
Interface Description
SDH service STM-1 electrical interfaces: SMB connectors
interface STM-1 optical interfaces: I-1, Ie-1, S-1.1, L-1.1, L-1.2, Ve-1.2
STM-4 optical interfaces: I-4, S-4.1, L-4.1, L-4.2, Ve-4.2
STM-16 optical interfaces: I-16, S-16.1, L-16.1, L-16.2,
L-16.2Je, V-16.2Je, U-16.2Je
STM-16 optical interfaces (FEC): Ue-16.2c, Ue-16.2d, Ue-16.2f
STM-64 optical interfaces: I-64.1, I-64.2, S-64.2b, L-64.2b,
Le-64.2, Ls-64.2, V-64.2b
STM-64 optical interfaces (FEC): Ue-64.2c, Ue-64.2d, Ue-64.2e
STM-16 and STM-64 optical interfaces that comply with ITU-T
G.692 can output fixed wavelength from 191.1 THz to 196.0
THz, and can output fixed wavelength and can be directly
interconnected with the WDM equipment.
PDH service 75/120-ohm E1 electrical interfaces: DB44 connectors
interface 100-ohm T1 electrical interfaces: DB44 connectors
75-ohm E3, T3 and E4 electrical interfaces: SMB connectors
Ethernet service 10/100Base-TX, 100Base-FX, 1000Base-SX, 1000Base-LX,
interface 1000Base-ZX, 10GBASE-LW, 10GBASE-LR
DDN service Framed E1
interface RS449, EIA530, EIA530-A, V.35, V.24, X.21
ATM service STM-1 ATM optical interfaces: Ie-1, S-1.1, L-1.1, L-1.2, Ve-1.2
interface STM-4 ATM optical interfaces: S-4.1, L-4.1, L-4.2, Ve-4.2
E3 ATM interfaces: E3 ATM services are accessed by the
N1PD3 or N1PL3 or N1PL3A board
IMA E1 interfaces: IMA E1 services are accessed by the N1PQ1
or N1PQM or N1PQMA or N2PQ1 board
Storage area FC100, FICON, FC200, ESCON, DVB-ASI service optical
network (SAN) interfaces
service interface



Product Description

Ue-16.2c, Ue-16.2d, Ue-16.2f, Le-64.2, Ls-64.2, L-16.2Je, V-16.2Je, U-16.2Je, Ve-1.2, Ve-4.2
are technical specifications defined by Huawei.

2.3.2 Administration and Auxiliary Interfaces
The equipment provides several types of administration and auxiliary interfaces.
Table 2-6 lists the types of administration and auxiliary interfaces provided by the
OptiX OSN 7500.

Table 2-6 Administration and auxiliary interfaces provided by the OptiX OSN 7500
Interface Description
Type

Administration One remote maintenance interface (OAM)
interface Four broadcast data interfaces (S1–S4)
One 64 kbit/s codirectional data path interface (F1)
One Ethernet interface (10M/100M) for network management
(ETH)
One administration serial interface (F&f)
One commissioning interface (COM)
Orderwire One orderwire phone interface (PHONE)
interface Two SDH NNI voice interfaces (V1 and V2)
Two SDH NNI signaling interfaces (S1 and S2, used with two
broadcast data interfaces)
Clock Two 75-ohm external clock interfaces (2048 kbit/s or 2048 kHz)
interface Two 120-ohm external clock interfaces (2048 kbit/s or 2048 kHz)
External synchronization and synchronous output
Alarm 16-input and 4-output alarm interface
interface Four cabinet alarm indicator output interfaces
Four cabinet alarm indicator concatenation input interfaces
Four cabinet alarm concatenation input interface
Microwave IF One coaxial cable connects to one ODU. Each board provides two
interface cables to separately connect two ODUs.
Two -48 VDC power input interfaces.

2.4 Networking Topology
The OptiX OSN 7500 supports the topologies such as chain, ring, tangent rings,
intersecting rings, ring with chain, dual node interconnection (DNI), hub, and mesh at
the STM-1/STM-4/STM-16/STM-64 level.



Product Description

The OptiX OSN 7500 supports the separate and hybrid configuration of the following
types of NEs:
l Terminal multiplexer (TM)
l Add/drop multiplexer (ADM)
l Multiple add/drop multiplexer (MADM)
The OptiX OSN 7500 can be interconnected with Huawei OSN, DWDM, and Metro
equipment series, to provide a complete transmission network solution.

When the equipment is interconnecting, make sure that the K bytes to be received and
transmitted are on the same path at both ends.
l The OptiX OSN 7500 can be used with another OptiX OSN equipment to provide
a complete ASON solution. This solution covers all the layers including the
backbone layer, the convergence layer, and the access layer.
l Through an SDH interface or a GE interface, the OptiX OSN 7500 can be
interconnected with the WDM equipment.
l Through an SDH, PDH, Ethernet, ATM, or DDN interface, the OptiX OSN 7500
can be interconnected with the OptiX Metro equipment.
Table 2-7 lists the networking modes supported by the OptiX OSN 7500.

Table 2-7 Basic networking modes of the OptiX OSN 7500
Networking Mode Topology

1 Chain

2 Ring

3 Tangent
rings

4 Intersecting
rings



Product Description

Networking Mode Topology

5 Ring with
chain

6 DNI

7 Hub

8 Mesh

MADM ADM TM ASON NE
Legends:

2.5 Protection
The equipment provides equipment level protection and network level protection.
2.5.1 Equipment Level Protection
The OptiX OSN 7500 provides several equipment level protection schemes.



Product Description

2.5.2 Network Level Protection
The OptiX OSN 7500 supports several network level protection schemes.

2.5.1 Equipment Level Protection
The OptiX OSN 7500 provides several equipment level protection schemes.
Table 2-8 lists the equipment level protection schemes supported by the OptiX OSN
7500.

Table 2-8 Equipment level protection schemes supported by the OptiX OSN 7500
Item Protection Scheme
PDH TPS
DDN TPS
Ethernet processing unit TPS/PPS/BPS/DLAG/1+1 hot backup
ATM 1+1 hot backup
Protection for the Microwave unit 1+1 HSB/FD/SD and N+1 hot backup
Arbitrary bit rate wavelength Intra-board protection (dual-fed and selective
conversion unit receiving) and inter-board protection (N+1
protection)
Cross-connect and timing unit 1+1 hot backup
SCC unit 1+1 hot backup
power interface unit 1+1 hot backup
Intelligent Fans unit The power supply modules are of mutual
backup for the three fan modules.
Board Under Abnormal Power-Down Protection During Software
Conditions Loading, Overvoltage or Undervoltage
Protection for Power Supply and Board
Temperature Detection
NOTE
The OptiX OSN 7500 supports the coexistence of two different types of TPS protection groups.

2.5.2 Network Level Protection
The OptiX OSN 7500 supports several network level protection schemes.
Table 2-9 lists the network level protection schemes supported by the OptiX OSN
7500.



Product Description

Table 2-9 Network level protection schemes supported by the OptiX OSN 7500
Network Level Protection Protection Scheme

SDH protection Linear MSP
MSP ring
Subnetwork connection protection (SNCP),
subnetwork connection multi-protection (SNCMP) and
subnetwork connection tunnel protection (SNCTP)
Dual-node interconnection (DNI) protection
Fiber-shared virtual trail protection
Optical-path-shared MSP
Ethernet protection Resilient packet ring (RPR) protection
ATM protection VP-Ring/VC-Ring protection

2.6 Board REG Function
The OptiX OSN 7500 supports the REG function.
The OptiX OSN 7500 supports the hybrid application of REG and ADM. See Figure
2-3.

Figure 2-3 Hybrid application of ADM and REG
REG
SL64 SL64

OUT IN OU T IN
SL64

IN OU T IN OUT
SL64

OptiX OSN 7500

IN OUT OUT IN

OUT IN IN OUT

SL16 SL16 SL16 SL16

ADM

For details on the boards that support REG, see Table 2-10.



Opti x osn 7500 product description

Opti x osn 7500 product description

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Opti x osn 7500 product description