Four-Port Channelized OC3/STM1 Circuit Emulation Interface

The 4xCOC3/CSTM1 CE PIC operates as either a four-port channelized OC3 circuit emulation interface in SONET mode or as a four-port channelized STM1 circuit emulation interface in SDH mode. In SONET mode, each OC3 port can be channelized down to three coc1 channels, and then each coc1 channel down to 28 T1 channels. In SDH mode, each STM1 port can be channelized down to four cau4 channels, and then each cau4 channel down to 63 E1 channels. The T1/E1 channels support time-division multiplexing (TDM) interfaces using the Structure-Agnostic time-division multiplexing over Packet (SAToP) protocol [RFC 4553] encapsulation, and support T1/E1 and SONET clocking features. Mixing T1 and E1 channels is not supported.

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