As a general purpose interterminal transceiver, the OC12c-XCVR carries both TDM and ATM traffic: TDM traffic is converted to ATM cells. 50 Mbps are reserved for the TDM backplane. The OC12c-XCVR contains Tellabs’ next generation ASIC, the Pathfinder, which is a key differentiator and technology enabler providing access to the ATM cell bus. The Pathfinder functions as an “ATM switch on a chip” providing ATM switching, QoS, concentrator capabilities, and conversion of TDM traffic to ATM and back to TDM.
As a video uplink to the ATM data network, the OC12c-XCVR interfaces to any UNI 3.1 and UNI 4.0 compliant ATM switch or router. As an ATM uplink, the card supports a 500 Mbps payload for use as a video network uplink. Automatic Protection Switching (APS 1+1) is enabled when the card is provisioned as an uplink.