Next Generation Networks are migrating to a packet-based network
There are applications that still need synchronization in a packet switched networks:
1. Cellular base station
2. Business Legacy services: E1/T1
3. Wireless Carriers
Synchronous Ethernet Applications:
1. E1/T1 (data + clock) + Ethernet (data) distribution
2. E1/T1 (clock) + Ethernet (data ) distribution
3. Ethernet (data + clock ) distribution