Clock recovery method for PCM transmission network

摘要

The method involves extracting the input path clock (est) from the input signal in a network element (NEE). The system clock (syt) is derived from the input path clock using a phase regulator. The input clock is directly fed to the output as the output clock. Preferably, the read out from a flexible memory is carried out at the output using the input clock. The write in to the flexible memory is carried out at the output using the system clock. The write in to the flexible memory at the input is carried out using the input clock ,and the read out is carried out using the system clock.