Circuit Emulation Services (CES) technology enables high performance transport of synchronous TDM-based services over packet switched infrastructure including Carrier Ethernet, DOCSIS HFC, PON and WiMAX. Supporting nx64Kbps, T1/E1, T3/E3 and SONET/SDH, Resolute solutions are designed for use in network equipment targeting telco and MSO environments. CES is reliable, stable and field-proven, and preserves all the existing high value telephony features installed in customer premises.
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Defining the standards for Circuit Emulation over Packet
Realizing the market demand for high performance carrier grade TDM services for the commercial markets, MEF, IETF, ITU-T and MPLS Forum have all defined standards and specifications for CES implementation.
Focused on providing carrier-class CES technology solutions, Resolute is an active member of a considerable number of CES-oriented standards committees…more>>
CES – How Does It Work?
CES Interworking Function (IWF) converts TDM circuits to packet flows by adding headers to segments of packetized TDM payloads. The IWF at the destination removes the packet headers and reconstructs the original TDM circuit. In additional, a timing recovery mechanism based on Adaptive Clock or Differential Clock is used for reconstructing the original TDM clock, to guarantee the synchronization of the TDM traffic over the packet switched network. (See Figure 1)
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