Whether the client-side optical port of the peer OTU board does not send or receive optical signals if the client-side optical port of the local OTU board does not with ALS enabled

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According to the ALS principle, if the local OTU board does not receive any optical signal on its client side, the peer OTU board will not emit light on its client side.

Other related questions:
Optical ports of the OTU board
The OTU board provides two groups of optical ports: IN/OUT and Rx/Tx. The IN and OUT ports correspond to WDM-side input and output, and the Rx and Tx ports correspond to SDH-side input and output. The WDM side is also called the line side; the SDH side is also called the client side. In the alarm parameters, 1 indicates the WDM-side transceiver optical port, and 2 indicates the SDH-side transceiver optical port. In some documents, the optical ports of the OTU board are classified into system-side and line-side ports. In the early period, the system side is also called the client side.

Whether the local or peer laser is turned off when ALS is enabled on the 52TOG board but no optical signal is input to the client side of the board
The peer client-side laser is turned off.

Whether the TOM board on the OSN 6800 supports 1.25G optical modules and whether the client-side laser on the local board emits light if no light is received on the client side of the peer board
The client side of a TOM board supports optical modules with rates ranging from 100 Mbit/s to 2.5 Gbit/s. When ALS is enabled for the client-side laser on the local TOM board, the client-side laser on the local board will not emit light if no light is received on the client side of the peer board. When ALS is disabled for the client-side laser on the local TOM board, the status of the client-side laser on the local board is not adversely affected by the client-side light receiving status of the peer board.

Description of the optical ports on a transceiver OTU board
Question: A transceiver OTU board provides two groups of optical ports: IN/OUT and Rx/Tx. The IN port inputs WDM-side signals and the OUT port outputs WDM-side signals. The Rx port inputs SDH-side signals and the Tx port outputs SDH-side signals. WDM side is also called line side, and SDH side is also called client side. In alarm parameters, the WDM-side IN/OUT port number is 1, and the SDH-side Rx/Tx port number is 2. In some documents, the optical ports of a transceiver OTU board may be at the system side or line side. What is system side? Answer: System side is the former name of client side. Pay attention to distinguish the names.

Client-side transmission distance of a 100G OTU board
The client-side transmission distance of a board depends on the client-side optical module.

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