TN17LSCT52,LSC,Huawei OSN 9800 LSC Wavelength Conversion Board

Huawei OSN 9800 LSC Board TN17LSCT52 Overview

LSC: 100 Gbit/s wavelength conversion board

The available functional versions of the LSC board are TN12, TN13, TN15, TN17, TN18, TN19.

The LSC boards of TN12 and TN13 versions use different front panels. The TN12LSC board occupies four slots, the TN13LSC/TN15LSC/TN17LSC board occupies two slots, the TN18LSC/TN19LSC board occupies one slot.

The LSC board is a wavelength conversion board and applies to coherent systems. In the receive direction, the board receives one 100GE/OTU4 optical signal from the client equipment, maps the optical signal into an OTU4 signal, and converts the OTU4 signal into a standard WDM wavelength.

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

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

The LSC board implements the regeneration of one channel of unidirectional optical signals. The wavelengths at the receive and transmit ends of the board are OTU4 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 OTU4 signals at DWDM standard wavelengths that comply with ITU-T G.694.1.

The optical signals are output through the OUT interface.

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

Transmit direction
The client-side optical module receives one channel of the optical signal from client equipment through the RX interface, and performs O/E conversion.

After performing the O/E conversion, the client-side optical module sends the electrical signal to the signal processing module. Then, the signal processing module performs encapsulation, OTN framing, and FEC encoding and outputs one channel of OTU4 signal to the WDM-side optical module.

After receiving the OTU4 signal, the WDM-side optical module performs E/O conversion, generates OTU4 signal at DWDM wavelength that complies with ITU-T G.694.1, and then outputs the OTU4 signal through the OUT optical interfaces.
Receive direction
The WDM-side optical module receives one channel of standard DWDM optical signal compliant with ITU-T G.694.1 through the IN optical interface. The WDM-side optical module then converts the OTU4 optical signal into electrical signal.

After the O/E conversion, the electrical signal is sent to the signal processing module, which performs OTU4 framing, FEC decoding, demapping, and decapsulation for the signal and then outputs one channel of the client-side electrical signal.

The channel of the client-side electrical signal is sent to the client-side optical module, which converts the electrical signal into optical signal and then outputs the optical signal through the TX optical interface.

There are indicators and interfaces on the front panel of the LSC board.

Four slots house one TN12LSC board, two slots house one TN13LSC/TN15LSC/TN17LSC, and one slot houses one TN18LSC/TN19LSC board.

Function and Feature

Function and Feature	Description
Basic function	LSC converts signal as follows: 1 x OTU4 <-> 1 x ODU4 <-> 1 x OTU4 1 x 100GE <-> 1 x ODU4 (bit transparent mapping/MAC transparent mapping) <-> 1 x OTU4 NOTE: Only the TN18LSC/TN19LSC board supports the MAC transparent mapping mode. The other versions of LSC boards only support the bit transparent mapping.
Client-side service type	100GE: Ethernet service at a rate of 103.125 Gbit/s. OTU4: OTN service at a rate of 111.81 Gbit/s
OTN function	Provides the OTU4 interface on WDM-side. Supports the OTN frame format and overhead processing compliant with ITU-T G.709. ODU4 layer: When the client-side service type is 100GE, the board supports the PM function. When the client-side service type is OTU4, the board supports the PM and TCM functions, PM and TCM non-intrusive monitoring functions. OTU4 layer: supports the SM function.
WDM specification	Supports DWDM specifications.
Tunable wavelength function	The TN18LSC/TN19LSC board can tune the optical signal output on the WDM side within the range of 96 wavelengths in extended C-band with the channel spacing of 50 GHz , and other boards can tune the optical signal output on the WDM side within the range of 80 wavelengths in the C-band with the channel spacing of 50 GHz.
ESC function	Supported NOTE: When the TN12LSC board is provisioned with the OTU4 service on the client side, the board does not support ESC function on the client side.
PRBS test function	When the client-side service type is OTU4, the PRBS function is supported on the client side. When the client-side service type is 100GE or OTU4, the PRBS function is also supported on the WDM side.
LPT function	Not supported
FEC coding	On the client side: Supports ITU-T G.709-compliant forward error correction (FEC) on the client side, only when the client side service type is OTU4. TN18LSC/TN19LSC board uses a converter to receive 100GE services, only RSFEC coding is supported. On the WDM side: The TN12LSC/TN13LSC board supports HFEC and SDFEC. The TN15LSC board supports HFEC and SDFEC2. The TN17LSC board supports SDFEC2. The TN18LSC board supports SDFEC2 and HFEC PLUS. The TN19LSC board supports SDFEC2. NOTE: Boards that use different FEC modes cannot interconnect with each other.
Alarms and performance events monitoring	Monitors BIP8 bytes (BIP8 bytes of OTU4 are in Bursty mode) for 100GE, and OTU4 services on the client side to help locate service failures. Monitors OTN alarms and performance events. Monitors parameters such as the bias current, temperature, and optical power of the laser. Supports the remote monitoring (RMON) of Ethernet services. Supports the monitoring of CD and PMD performance. NOTE: Only the TN12LSC board does not support the monitoring of BIP8 bytes on the client side.
Regeneration board	The WDM-side signals of an LSC board can be regenerated using the N401, N402, U401, LTX, NS4, TN17LSC, TN18LSC, TN19LSC board of the same type. For example, The type of the TN12LSCT01 board is T01, and the WDM-side signals of the TN12LSCT01 board can be regenerated using the N401, N402, LTX, NS4 board of the T01 type, such as TNV1N401T01, TNV2N402T01, TNV2N401T01, TN12LTXT01, TN54NS4T01, TNV2U401T01, TN57NS4T01, TN58NS4T01. TN11LTXT01.
ALS function	Supports the ALS function on the client side when client services are non-OTN services.
Test frame	Supported only when the client-side service type is 100GE.
Latency measurement	TN13LSC/TN15LSC: Supports the PM Latency measurement when non-OTN services are received. TN17LSC/TN18LSC/TN19LSC: If non-OTN services are received on the client side, the board supports latency measurement for upstream PM/TCM sections. If OTN services are received on the client side, the board supports latency measurement for downstream and upstream TCM sections. NOTE: After an upgrade to V100R006C00 or a later version, the TCM latency measurement function can be used only after a cold reset is performed on the TN17LSC board.
IEEE 1588v2	Not supported
Physical clock	When receiving 100GE services on the client side, the board supports synchronous Ethernet transparent transmission instead of synchronous Ethernet processing.
Ethernet service mapping mode	TN18LSC/TN19LSC: Bit Transparent Mapping ODU4 and Mac Transparent Mapping ODU4. Other LSC: Bit Transparent Mapping ODU4 NOTE: Only the TN18LSC/TN19LSC board supports changing the ethernet service mapping mode.
Electrical-layer ASON	Not supported
Optical-layer ASON	Supported NOTE: TN19LSC: In versions earlier than V100R007C00SPC500, ASON is not supported in high SOP mode. In V100R007C00SPC500 and later versions, only ASON without optical parameters is supported in high SOP mode.
Protection scheme	Supports client 1+1 protection. Supports intra-board 1+1 protection (when working with the OLP/DCP/QCP board). NOTE: When the client-side uses 100GBASE-SR10-100m-CFP2 optical module, the LSC board does not support client-side 1+1 protection. When the client-side of TN18LSC/TN19LSC uses QSFP28-100G(4x25G)-850nm(SR4)-MMF-0.1km or (100GBASE-4×25G)-CLR4-2km-QSFP28 optical module, the board does not support client-side 1+1 protection. NOTE: When the client-side service is OTU4, the TN12LSC board does not support client-side 1+1 protection.
Loopback	Client side	Inloop	Supported
		Outloop
	WDM side	Inloop	Supported
		Outloop

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Huawei OSN 9800 LSC Wavelength Conversion Board TN17LSCT52

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