A.WSMD2 board supports F1exible ROADM configuration

B.Improve spectrum utilization and meet flexible scheduling requirements in the future era of over 100 Gbit/= rate.

C.Flexible grid technology provides flexible bandwidth settings and flexible bandwidth allocation and scheduling.

D.DFlexible ROADM is compatible with existing networks

A.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.

B.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.

C.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.

D.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.

A.Mesh

B.Ring

C.Point to point

D.Chain type

A.The 1+1 protection on the board can protect the OTU board.

B.In-board 1+1 protection can be applied to chain networking and ring networking.

C.Set the OTU as the detection unit, and the electrical layer alarms such as OTUk_LOF and OTUK_LOM will also trigger the switching.

D.For OSN 1800 devices, you can use the OTU with dual-selection to protect your business.

A.errors in source and sink ports in the site

B.Missing logical fiber between sites

C.Line attenuation is too large

D.Inconsistent wavelengths of the line boards at both ends of the source and sink