iSync

Outstanding synchronization performance is in Infinera’s DNA, and consequently the company’s packet-optical portfolio has brought superior sync performance to network operators across the globe for many years. Infinera’s Intelligent Sync (iSync) set of capabilities captures these strengths within three primary areas:

Industry-leading Layer 2 sync performance

Based on the XTM Series platform, and though the innovative design of Infinera’s EXMP family of packet-optical transport switches, customers are able to deploy networks with industry-leading synchronous Ethernet (SyncE) performance. This has helped to deploy mobile backhaul networks with sync performance that is an order of magnitude or more better than Synchronous Digital Hierarchy (SDH)/Synchronous Optical Networking (SONET)-synchronized networks.

With a new set of sync capabilities in the EMXP, a number of sync solutions are offered, of which all are well within the recommendations for Long Term Evolution – Advanced (LTE-A). This provides the ideal tools for managing frequency, time and phase requirements in different network deployment scenarios:

  • The industry-leading SyncE capabilities of the EMXP, as well as its low-latency performance, help the 1588 protocol to provide superior network stability in hybrid SyncE assist mode.
  • The EMXPs’ support for 1588 transparent clock reduces packet delay variation (PDV) significantly, resulting in a more stable mobile network that meets the tough phase synchronization requirements of LTE-A networks.

Patented Layer 1 sync with multiple sync domains per wavelength

Transporting transparent synchronization within a framed wavelength-division multiplexing (WDM) wavelength, i.e. once a header is added for management, forward error correction etc., is not easy, and not all WDM vendors are able to transport signals transparently while also maintaining any embedded synchronization. Infinera not only achieves this but takes it one step further using XTM Series muxponders with patent-protected sync functionality that support multiple independent sync signals over a single wavelength. This is particularly useful in a wholesale environment in which an operator may need to support many wireless operators with differing sync strategies and clocks.

Outstanding sync monitoring and management

Good sync is of limited use if it isn’t monitorable and manageable by network operations. Infinera’s iSync capabilities provide users with sync management maps and full sync source protection switching.