Aricent Group has added more timing and synchronization features to its routing and switching framework, Intelligent Switching Solution (ISS) – IEEE 1588, or precision time protocol (PTP), and synchronous Ethernet or SyncE (ITU-T G.8261/2/4). PTP provides a standard protocol for orchestrating timing among Ethernet environments by
synchronizing all systems to the highest quality “clock” on the network. This method brings
synchronization down to the sub-millisecond range. SyncE is a key development in the evolution of Ethernet into a carrier-grade technology. It uses similar external references as a source for frequency synchronization, as previously were used by SDH and SONET technology to provide accurate frequency reference. www.aricent.com