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PN: AA54D232
Huawei OSN1800V 2-channel 100Gbit/s to 1-Channel OTUC2/OTU4 Service Convergence Wavelength Conversion Board
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Hardware Tested

Hardware Tested x

In order to avoid hardware malfunction, each equipment will be strictly tested before delivery and the test report will be packed inside equipment and delivered together.Learn More

Hardware Compatibility

Hardware Compatibility x

Backed up by our experienced pre-sales support team, and volume documentation, to avoid purchasing incompatible hardware.

Software Compatibility

Software Compatibility x

Software compatibility test between active/standby system board, main control board and service board, mother/sub-card; system commissioning test to prevent all software conflicts.


TMB1LDC 2-channel 100Gbit/s to 1-channel OTUC2/OTU4 service convergence wavelength conversion board

Applied to Huawei 1800 I&II Compact, 1800 II TP, 1800 II Enhanced, OSN 1800V

Supports LS

Supports intra-board 1+1 protection, client 1+1 protection

Supports ALS when 100GE services are received on the client side

Supports physical-layer clocks when OTU4 signals are received on the client side and mapping path is GFP-F

Supports ESC communication

Supports Optical-layer ASON when working with Z5UXCMS/Z8XCH

Physical-layer clocks are supported on the WDM side

The LDC board can only work with the LDC board for regeneration

TMB1LDC is a 2-channel 100Gbit/s to 1-channel OTUC2/OTU4 service convergence wavelength conversion board applied to Huawei 1800 I&II Compact, 1800 II TP, 1800 II Enhanced, OSN 1800V. The LDC board is a wavelength conversion board and applies to coherent systems, the board maps optical signals received on the client side into one OTUC2 or OTU4 signal, and performs mutual conversion between the OTUC2/OTU4 signal and the optical signal carried over an ITU-T-compliant WDM wavelength.

Tech Specs
Front Panel
There are ports on the front panel of the board.


Specifications (in OTU mode)
Basic functions

Working modes of the board and ports

Supports two working modes: 200G and 100G. In the 100G working mode, the TX2/RX2 is unavailable. The mapping paths of the board are as follows:

1. 200G line:

a. 100GE <—> ODU4(GMP) <—> ODUC2 <—> OTUC2

b. 100GE <—> ODU4(GFP-F) <—> ODUC2 <—> OTUC2

c. OTU4 <—> ODU4 <—> ODUC2 <—> OTUC2

2. 100G line:

a. 100GE <—> ODU4(GMP) <—> OTU4

b. 100GE <—>ODU4(GFP-F) <—> OTU4

c. OTU4 <—> ODU4 <—> OTU4

Line modulation format

200G mode: 200G ePDM-16QAM, 200G ePDM-16QAM-H, 200G ePDM-e16QAM.

100G mode: 100G ePDM-QPSK wDCM, 100G ePDM-QPSK.

Spectral width of WDM-side signals

200G ePDM-16QAM: 50GHz Flex/62.5GHz Flex/75GHz Flex

200G ePDM-16QAM-H: 50GHz Fix

200G ePDM-e16QAM: 50GHz Fix

100G ePDM-QPSK wDCM: 50GHz Fix

100G ePDM-QPSK: 50GHz Fix

Specifications (in regeneration mode)
Basic functionsThe board applies to electrical regeneration sites to provide the electrical regeneration function for optical signals. You need to set the board mode to electrical regeneration mode.
Regeneration rate

OTUC2: OTN service at a rate of 224.6 Gbit/s

OTU4: OTN service at a rate of 111.81 Gbit/s

Error correction encoding

200G regeneration: SDFEC(200G ePDM-16QAM and 200G ePDM-16QAM-H) encoding and SDFEC2(200G ePDM-e16QAM) encoding can be supported.

100G regeneration: SDFEC2(100G ePDM-QPSK wDCM and 100G ePDM-QPSK) encoding can be supported.


Boards that use different error correction encoding modes cannot interconnect with each other.

Line Modulation Format

In 200G mode, 200G ePDM-16QAM, 200G ePDM-16QAM-H, and 200G ePDM-e16QAM are supported.

In 100G mode, 100G ePDM-QPSK wDCM and 100G ePDM-QPSK are supported.

Client-Side Pluggable Optical Module


QSFP28-100G(4x25G)-1271 to 1331nm(CLR4)-SMF-2km

QSFP28-100G(4x25G/28G,Dualrate)-1295nm to 1310nm(LR4)-SMF-10km

WDM-Side Fixed Optical Module

C band-Tunable wavelength-ePDM-200G e16QAM/100G QPSK/etc.(Configurable rate and modulation format, Coherent, Metro+, A24)-CFP2

 Version description of the LDC board
BoardProduct Applicable-System Control Board-Initial Board Version Supported by System Control Board

1800 I&II Compact-TNF3SCC-V100R019C10SPC300

1800 II Enhanced-TNZ2UXCL-V100R019C10SPC300


1800 II TP-TMB1SCC-V100R019C10SPC300

Mechanical Specifications
Typical Power Consumption(W)


Maximum Power Consumption(W)


Dimension (W x H x D, mm)

193.8 x 19.8 x 205.9

Weight(kg)0.85 kg

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