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Huawei OSN 8800 LSXLR TN11LSXLR Description

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 Huawei, OSN 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 version of the LSXLR 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
TN11LSXLR N N N N N N Y N
TN12LSXLR Y Y Y Y N Y Y N

Variants

Table 1 Available variants of the TN12LSXLR board
Variant WDM-Side Fixed Optical Module
T01 500 ps/nm-C Band-Tunable Wavelength-DQPSK-PIN
T03 500 ps/nm-C Band-Tunable Wavelength-ODB-PIN

Differences Between Versions

  • Function:

    Board OTU3e services
    TN11LSXLR N
    TN12LSXLR Y

    For details, see Functions and Features.

  • Appearance:
    • The TN11LSXLR and TN12LSXLR versions use different front panels. For details, see Front Panel.
  • Specification:
    • For the specification of each version, see LSXLR Specifications.

Substitution Relationship

The LSXLR boards of different versions cannot replace each other.

Functions and Features

The LSXLR board is 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 LSXLR board
Function and Feature Description
Basic function The board is used in an electrical REG station in the system to implement electrical regeneration of optical signals.
Regenerating rate OTU3: OTN service at a rate of 43.02 Gbit/s

OTU3e: OTN service at a rate of 44.57 Gbit/s

NOTE:

Only TN12LSXLR supports OTU3e service.

OTN function
  • Provides the OTU3/OTU3e interface on WDM-side.
  • Supports the OTN frame format and overhead processing by complying with the ITU-T G.709.
  • ODU3 layer: supports the PM and TCM function, and PM and TCM non-intrusive monitoring functions.
  • OTU3 layer: supports the SM function.
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 Not supported
LPT function Not supported
FEC coding
  • 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.

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 OTN alarms and performance events.
  • Monitors parameters such as the bias current, temperature, and optical power of the laser.
ALS function Not supported
Test frame Not supported
Latency measurement Not supported
Optical-layer ASON Supported
Electrical-layer ASON Not supported
Protection scheme Not supported
Protocols or standards compliance Protocols or standards for transparent transmission (non-performance monitoring) -
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 LSXLR board consists of the optical receiving module, optical transmitting module, signal processing module, control and communication module, and power supply module.

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

Figure 1 Functional modules and signal flow of the LSXLR board 

Signal Flow

The LSXLR board implements the regeneration of one channel of unidirectional optical signals. The wavelengths at the receive and transmit ends of the board are OTU3/OTU3e optical signals at DWDM standard wavelengths that comply with ITU-T G.694.1.

The optical receiving module receives the optical signals to be regenerated through the IN interface, and performs O/E conversion.

The signal processing module performs decoding, overhead processing and encoding of signals. During the process, the reshaping, regenerating and retiming based on electrical signals are performed, and the signals are encapsulated into OTN frames.

After encoding, the signals are sent to an optical transmitting module. After performing E/O conversion, the module transmits OTU3/OTU3e signals at DWDM standard wavelengths that comply with ITU-T G.694.1.

The optical signals are output through the OUT interface.

Module Function

  • Optical receiving module
    • Performs O/E conversion of OTU3/OTU3e optical signals at DWDM standard wavelengths that comply with ITU-T G.694.1.
    • Reports the performance of the WDM-side optical interface.
    • Reports the working state of the WDM-side laser.
  • Optical transmitting module
    • Performs E/O conversion from the internal electrical signals to OTU3/OTU3e optical signals at DWDM wavelengths that comply with ITU-T G.694.1.
    • Reports the performance of the WDM-side optical interface.
    • Reports the working state of the WDM-side laser.
  • The signal processing moduleThe module consists of the decoding module, overhead module, and encoding module.
    • Decoding modulePerforms the FEC decoding of OTU3/OTU3e signals, and monitors the performance of WDM-side services.
    • Encoding modulePerforms the FEC encoding of OTU3/OTU3e signals.
    • Overhead modulePerforms overhead processing of OTU3/OTU3e signals, and monitors the performance of WDM-side services.
  • 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.

LSXLR Specifications

Specifications include optical specifications, dimensions, weight, and power consumption.

Board WDM-Side Fixed Optical Module WDM-Side Pluggable Optical Module
TN11LSXLR 500 ps/nm-C Band-Tunable Wavelength-ODB-PIN

400 ps/nm-C Band-Tunable Wavelength-(D)RZ-PIN

N/A
TN12LSXLR 500 ps/nm-C Band-Tunable Wavelength-DQPSK-PIN

500 ps/nm-C Band-Tunable Wavelength-ODB-PIN

N/A

 NOTE:

(D)RZ means DRZ or RZ. These two types of optical modules have the same optical performance and can be interconnected. The availability of the two type of optical module is subject to PCNs. For PCN information, consult with the product manager at the local representative office.

 NOTE:

Margins exist between the default input power low threshold and the receiver sensitivity and between the default input power high threshold and the overload point. These margins ensure that the system can report an input power low or high alarm before the actual input power reaches the receiver sensitivity or overload point.

WDM-Side Fixed Optical Module

Table 1 WDM-side fixed optical module specifications (tunable wavelengths, 500 ps/nm, 400 ps/nm)
Parameter Unit Value
Optical Module Type 500 ps/nm-C Band-Tunable Wavelength-DQPSK-PIN 500 ps/nm-C Band-Tunable Wavelength-ODB-PIN 400 ps/nm-C Band-Tunable Wavelength-(D)RZ-PIN
Line code format - DQPSK ODB (D)RZ
Transmitter parameter specifications at point S
Operating frequency range THz 192.10 to 196.05 192.10 to 196.05 192.10 to 196.00
Maximum mean launched power dBm 0 0 0
Minimum mean launched power dBm -5 -5 -5
Minimum extinction ratio dB N/A 8.2 8.2
Center frequency deviation GHz ±2.5 ±2.5 ±5
Maximum -20 dB spectral width nm N/A 0.6 1
Maximum -3 dB spectral width nm 0.3 N/A N/A
Dispersion tolerance ps/nm ±500 ±500 ±400
Receiver parameter specifications at point R
Receiver type - PIN PIN PIN
Operating wavelength range nm 1529 to 1561 1529 to 1561 1529 to 1561
Receiver sensitivity, EOL (FEC on) dBm -16 -16 -16
Minimum receiver overload (FEC on) dBm 0 0 0
Maximum reflectance dB -27 -27 -27

Mechanical Specifications

TN11LSXLR

  • Dimensions of front panel (H x W x D): 264.6 mm (10.4 in.) x 101.6 mm (4.0 in.) x 220 mm (8.7 in.)
  • Weight: 3.1 kg (6.7 lb.)

TN12LSXLR

  • Dimensions of front panel (H x W x D): 264.6 mm (10.4 in.) x 50.8 mm (2.0 in.) x 220 mm (8.7 in.)
  • Weight: 2.5 kg (5.5 lb.)

Power Consumption

Board WDM-Side Optical Module Typical Power Consumption (W) Maximum Power Consumptiona (W)
TN11LSXLR 400 ps/nm-C Band-Tunable Wavelength-(D)RZ-PIN 87.0 90.0
500 ps/nm-C Band-Tunable Wavelength-ODB-PIN 82.0 85.0
TN12LSXLR 500 ps/nm-C Band-Tunable Wavelength-DQPSK-PIN 75.0 79.0
500 ps/nm-C Band-Tunable Wavelength-ODB-PIN 67.0 70.0
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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