IMPLEMENTATION OF SYNCHRONOUSETHERNET IN TELECOMMUNICATION SYSTEM

Accurate timing transfer and recovery over packet networks (IP, Ethernet, MPLS, etc.)has become an important requirement for delivering many telecommunication services. This requirement stems from the fact that current networks are migrating from time-division multiplexing (TDM) technologies to packet based ones, and also the need to synchronize the many timingdependent devices like TDM access devices and wireless base stations. Synchronous Ethernet (Sync-E), defined by the ITU-T, has emerged as a powerful, yet simple technology, for accurate timing transfer over Ethernet networks using “TDM-like ” (precisely, SDH/SONET) timing techniques. Synchronous Ethernet are designed for the transference of clock signals over the Ethernet Physical layer. Sync-E is to provide a synchronization signal over Ethernet network