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Huawei OSN 8800 TMX TN11TMX TN12TMX Details

OSN 8800 is a new-generation optical transmission system developed by Huawei. It adopts a unified switching architecture and can function as an MPLS/MPLS-TP-based packet device or a TDM device. When working with other devices of HuaweiOSN 8800 supports various networking modes, including the pure packet mode, hybrid networking (packet + TDM) mode, and pure TDM mode, achieving optimal processing for packet services and traditional SDH services. Thus, OSN 8800 efficiently transmits voice and data services over the same platform.

 

Version Description

The available functional versions of the TMX board are TN11 and TN12.

Mappings Between the Board and Equipment

The following provides the board(s) supported by the product. However, the availability of the board(s) is subject to PCNs. For PCN information, contact the product manager at your local Huawei office.

Board General 8800 T64 Subrack Enhanced 8800 T64 Subrack General 8800 T32 Subrack Enhanced 8800 T32 Subrack 8800 T16 Subrack 8800 Universal Platform Subrack 6800 Subrack 3800 Chassis
TN11TMX Y Y Y Y N N Y Y
TN12TMX Y Y Y Y Y Y Y Y

Differences Between Versions

  • Function:
    • TN11TMX supports AFEC, and the TN12TMX supports AFEC-2. Boards that use different FEC modes cannot interoperate with each other. For details, see Functions and Features.
  • Specification:
    • The TN11TMX board supports fixed optical module and tunable optical module on the WDM side. The TN12TMX board supports fixed optical module, tunable optical module, XFP module and gray optical module on the WDM side. For specifications of each version, see TMX Specifications.

Substitution Relationship

Original Board Substitute Board Substitution Rules
TN11TMX TN12TMX The TN12TMX can be created as 11TMX on the NMS. The former can substitute for the latter, without any software upgrade. After substitution, the TN12TMX functions as the TN11TMX.

NOTE:

  • When both the receive and transmit boards employ FEC, the substitution applies; when both the receive and transmit boards employ AFEC, the substitution does not apply.
  • A board equipped with a PIN receiver cannot substitute for a board equipped with an APD receiver, because the two types of receives support different input power ranges.
NOTE:

When a TN11TMX board receives OTU1 services on the client side and FEC is enabled, the TN12TMX board cannot substitute for the TN11TMX board.
TN12TMX None -

Application

As a type of optical transponder unit, the TMX board multiplexes four channels of STM-16/OC-48/OTU1 service signals into one channel of OTU2 signals, and implements conversion between these service signals and WDM signals that comply with ITU-T Recommendations.

For the position of the TMX board in the WDM system, see Figure 1.

Figure 1 Position of the TMX board in the WDM system 

Functions and Features

The TMX board is mainly used to achieve wavelength tunable and to provide OTN interfaces and ESC.

For detailed functions and features, refer to Table 1.

Table 1 Functions and features of the TMX board
Function and Feature Description
Basic function TMX converts signals as follows: 4x STM-16/OC-48/OTU1<->1x OTU2
Client-side service type STM-16/OC-48: SDH/SONET service at a rate of 2488.32Mbit/s

OTU1: OTN service at a rate of 2.67 Gbit/s

OTN function
  • Provides the OTU2 interface on WDM-side.
  • Supports the OTN frame format and overhead processing by referring to the ITU-T G.709.
  • Supports PM and TCM functions for ODU1.
  • Supports PM and TCM non-intrusive monitoring for ODU1.
  • Supports SM function for OTU1.
  • Supports PM and TCM functions for ODU2.
  • Supports SM function for OTU2.
WDM specification Supports ITU-T G.694.1-compliant DWDM specifications.
Tunable wavelength function
Supports tunable wavelength optical modules that provide for:

  • 40 wavelengths tunable in the C band with 100 GHz channel spacing
  • 80 wavelengths tunable in the C band with 50 GHz channel spacing
ESC function Supported
PRBS test function Supports the PRBS function on the client and WDM sides.
LPT function Not supported
FEC encoding
TN11TMX:

  • Does not support FEC on the client side, when the client side service type is OTU1.
  • Supports ITU-T G.709-compliant forward error correction (FEC) on the WDM side.
  • Supports ITU-T G.975.1-compliant advanced forward error correction (AFEC) on the WDM side.
TN12TMX:

  • Does not support FEC on the client side, when the client side service type is OTU1.
  • Supports ITU-T G.709-compliant forward error correction (FEC) on the WDM side.
  • Supports ITU-T G.975.1-compliant AFEC-2 on the WDM side.
NOTE:

Boards that use different FEC modes cannot interconnect with each other.
Alarms and performance events monitoring
  • Monitors BIP8 bytes (Bursty mode) to help locate line failures.
  • Monitors B1 bytes to help locate faults.
  • Monitors OTN alarms and performance events.
  • Monitors parameters such as the bias current, temperature, and optical power of the laser.
Regeneration board
  • The WDM-side signals from one TN11TMX board can be regenerated by another TN11LSXR board.
  • The WDM-side signals from one TN12TMX board can be regenerated by another TN12ND2/TN52ND2/TN53ND2/TN55NO2/TN53NQ2/TN54NQ2 board.
ALS function Supports the ALS function on the client side.
Test frame Not supported
Latency measurement Not supported
Optical-layer ASON Supported
Electrical-layer ASON Not supported
Protection scheme
  • Supports client 1+1 protection.
  • Supports intra-board 1+1 protection (when working with the OLP/DCP/QCP board).
  • Supports OWSP protection.
Loopback WDM side Inloop Supported
Outloop Supported
Client side Inloop Supported
Outloop Supported
Protocols or standards compliance Protocols or standards for transparent transmission (non-performance monitoring) ITU-T G.707

ITU-T G.782

ITU-T G.783

GR-253-CORE Synchronous Optical Network (SONET) Transport Systems: Common Generic

Protocols or standards for service processing (performance monitoring) ITU-T G.805

ITU-T G.806

ITU-T G.709

ITU-T G.872

ITU-T G.7710

ITU-T G.798

ITU-T G.874

ITU-T M.3100

ITU-T G.874.1

ITU-T G.875

ITU-T G.808.1

ITU-T G.841

ITU-T G.8201

ITU-T G.694.1

Working Principle and Signal Flow

The TMX board consists of the client-side optical module, WDM-side optical module, signal processing module, control and communication module, and power supply module.

Figure 1 shows the functional modules and signal flow of the TMX board.

Figure 1 Functional modules and signal flow of the TMX board 

Signal Flow

In the signal flow of the TMX board, the transmit and the receive directions are defined. The transmit direction is defined as the direction from the client side of the TMX to the WDM side of the TMX, and the receive direction is defined as the reverse direction.

  • Transmit directionThe client-side optical module receives four channels of the optical signals from client equipment through the RX1-RX4 interfaces, and performs O/E conversion.

    After the O/E conversion, the four channels of electrical signals are sent to the signal processing module. OTU1 signals are sent to the client-side OTN processing module for performance monitoring. Other types of signals are sent to the SDH/SONET encapsulation and mapping modules for encapsulation and mapping. In the end, operations such as the OTN framing and FEC encoding processing are performed. Then, the module outputs one channel of OTU2 electrical signals.

    The OTU2 signals are sent to the WDM-side optical module. After performing E/O conversion, the module sends out OTU2 optical signals at DWDM wavelengths that comply with ITU-T G.694.1 through the OUT optical interface.

  • Receive directionThe WDM-side optical module receives one channel of OTU2 optical signals at DWDM wavelengths that comply with ITU-T G.694.1 through the IN optical interface. Then, the module performs O/E conversion.

    After O/E conversion, the OTU2 signals are sent to the signal processing module. The module performs operations such as OTU2 framing, decoding of FEC, demapping, and decapsulation processing. Then, the module outputs four channels of STM-16/OC-48/OTU1 electrical signals.

    The client-side optical module performs E/O conversion of STM-16/OC-48/OTU1 electrical signals, and then outputs client-side optical signals through the TX1-TX4 optical interfaces.

Module Function

  • Client-side optical moduleThe module consists of a client-side receiver and a client-side transmitter.
    • Client-side receiver: Performs O/E conversion of four channels of STM-16/OC-48/OTU1 optical signals.
    • Client-side transmitter: Performs E/O conversion from four channels of the internal electrical signals to STM-16/OC-48/OTU1 optical signals.
    • Reports the performance of the client-side optical interface.
    • Reports the working state of the client-side laser.
  • WDM-side optical moduleThe module consists of a WDM-side receiver and a WDM-side transmitter.
    • WDM-side receiver: Performs O/E conversion of OTU2 optical signals.
    • WDM-side transmitter: Performs E/O conversion from the internal electrical signals to OTU2 optical signals.
    • Reports the performance of the WDM-side optical interface.
    • Reports the working state of the WDM-side laser.
  • Signal processing moduleThe module consists of the SDH/SONET encapsulation and mapping module, client-side OTN processing module, and OTN processing module.
    • SDH/SONET encapsulation and mapping moduleEncapsulates multiples channel of SDH/SONET signals and maps the signals into the OTU2 payload area. The module also performs the reverse process and has the SDH/SONET performance monitoring function.
    • Client-side OTN processing moduleMonitors OTN performance.
    • OTN processing moduleFrames OTU2 signals, processes overheads in OTU2 signals, and performs the FEC encoding and decoding.
  • Control and communication module
    • Controls operations on the board.
    • Controls operations on each module of the board according to CPU instructions.
    • Collects information about alarms, performance events, working states and voltage detection from each functional module on the board.
    • Communicates with the system control and communication board.
  • Power supply moduleConverts the DC power supplied by the backplane into the power required by each module on the board.

TMX Specifications

Mechanical Specifications

  • Dimensions of front panel (H x W x D): 264.6 mm (10.4 in.) x 25.4 mm (1.0 in.) x 220 mm (8.7 in.)
  • Weight:TN11TMX: 1.4 kg (3.1 lb.)

    TN12TMX: 1.1 kg (2.4 lb.)

Power Consumption

Board WDM-Side Optical Module Typical Power Consumption (W) Maximum Power Consumptiona (W)
TN11TMX 800 ps/nm-C Band (odd & even wavelengths)-Fixed Wavelength-NRZ-PIN

800 ps/nm-C Band-Fixed Wavelength-NRZ-PIN

40.3 44.3
1200 ps/nm-C Band-Tunable Wavelength-NRZ-PIN

1200 ps/nm-C Band-Tunable Wavelength-NRZ-APD

42.1 46.4
800 ps/nm-C Band-Tunable Wavelength-(D)RZ-PIN 44.5 51.2
4800 ps/nm-C Band-Tunable Wavelength-ODB-APD 48.4 55.7
TN12TMX 800 ps/nm-C Band (Odd & Even Wavelengths)-Fixed Wavelength-NRZ-PIN-XFP

10 Gbit/s Multirate-10 km-XFP

10 Gbit/s Multirate-40 km-XFP

10 Gbit/s Multirate-80 km-XFP

31.4 36.1
800 ps/nm-C Band-Tunable Wavelength-NRZ-PIN-XFP 31.4 36.1
800 ps/nm-C Band-Tunable Wavelength-(D)RZ-PIN 41 45.5
800 ps/nm-C Band-Tunable Wavelength-NRZ-PIN 39 43.7
a: The maximum power consumption is the power consumed by the board when it works normally under the highest ambient temperature.
 
 

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