Terms

Line The clock recovered from the received TDM stream on the TDM port is used as a transmit clock source on the same TDM port.
Adaptive The transmit clock source for the TDM port is the clock recovered from the PSN pseudowire packets. The transmit clock is adaptively recovering clock from the pseudowire packet arrival rate.
Network clock: The transmit clock source for the TDM port is the common synchronized clock in the system. The system clock could be synchronized to one of the following clock sources: SyncE, 1588v2, BITS or a clock recovered from the TDM port.