A.Receive OTU input optical power

B.Type of originating FEC

C.Main light path performance

D.Light performance flatness

A.After receiving the alarm, the SOM obtains the OCh path corresponding to the alarm and adds it to the management path to be optimized.

B.The SCC board at the downstream site of the fault reports the alarm to the power detection unit (OA) of the first node through DCN communication, and reports the alarm to the SOM on the SC of the first node.

C.According to the user adjustment command, adjust the line attenuation of the OCh path to make the downstream light output reach the normal value.

D.The downstream power detection unit (OA) detects that the line attenuation deviation exceeds the threshold and reports the alarm to its own SCC board.

A.FALSE

B.TRUE

A.OCh

B.OTS

C.OSC

D.OMS

A.Support single channel optical power monitoring

B.The number of combined waves is more

C.Less occupied slots

D.Support light layer crossing