Telecommunication device with centralized processing, redundancy protection, and on-demand insertion of signaling bits

摘要: A telecommunication device for receiving and transmitting DS1 level signals that includes a 1/0 digital cross-connect switch, GR-303 concentrator, frame relay aggregator switch in single integrated one housing fills less than two standard rack units. The both active standby/backup controller cards communicate with eight quad framer through bus located the backplane. communication backplane is via 8.192 Mbps signal to from each card, passed along bus. generated by multiplexing four (E-1) on card. card monitors status of channel associated stores historical data about spare buffer registers framer. Whenever transition occurs can obtain information framers make more seamless. also software interrupted signaling bit changes, so program control bits, translation if necessary.