A.Line attenuation exceeds the design EOL value.

B.Line attenuation compensation is abnormal

C.The main light path is broken?

D.The origin of the optical discharge power is abnormal

A.Rate indicates the line rate of the physical layer. If the device port is FE, then Rate=100Mbit/s.

B."8" outside the brackets is 1 Byte containing 8 Bits

C.M is the frame gap, and the minimum IFG (minimum frame gap) is 8 bytes.

D.L is in standard Ethernet frame length with a minimum value of 64Bytes

A.1+1 protection inside the board

B.Optical line protection

C.Customer side 1+1 protection

D.ODUk SNCP protection

A.Initialize and Manually Configure NE Data

B.Upload

C.Download

D.Copy NE Data

A.The network element broadcasts the clock quality information and the clock source ID of the synchronization source through the downstream station between the S1 bytes, and notifies the upstream station that the clock quality from the local network element is "not available for synchronization" by the S1 byte in the direction of the synchronization source.

B.If there are multiple clock sources with the highest quality level, the network element selects the clock with the highest clock priority as the synchronization source.

C.According to the clock source priority table, the network element first selects the clock with the highest quality level from the available clock sources as the homologous source.

D.The network element broadcasts the clock quality information of the synchronization source to the downstream site through the S1 byte, and notifies the upstream station that the clock quality from the local network element is "not available for synchronization" by the S1 byte in the direction of the synchronization source.