This topic describes the basic concepts related to the WDM clock.
Clock Source
The clock source synchronizes different parts of an NE or the upstream and downstream NEs. In this way, all function modules and chips of the NE can work in a stable and precise frequency, so that services are correctly and orderly transmitted. Synchronizing the network equipment is important.
WDM Clock Signal Flow Based on boards of the WDM equipment and clock signals, the WDM clock signal flow shows the clock signal tracing relationships between NEs in the WDM network.