Communication processor apparatus for use in a TDM switching system

摘要

Communication processor apparatus for use in a TDM telephone system operating in a multiframe format consisting of a plurality of time frames where each time frame consists of a plurality of time slots having a time slot rate and where the plurality of frames includes signaling frames having supervisory signals where the supervisory signals occur as a signaling bit during each time slot in the signaling frame. The telephone system includes a base switch connected to a plurality of multitime slot data buses for switching encoded data between specified time slots on the buses and also includes a subscriber switch for connecting a plurality of local subscriber lines to time slots on a pair of the buses. The communication processor provides a communications link between the base switch and the subscriber switch and includes a receiver for receiving signaling bits during alternate signaling frames in the form of a message on one of the buses and a transmitter for transmitting sequential signaling bits during a selected signaling frame in the form of a second message on a multitime slot data bus. A central processing unit provides control of the operation of the communication processor.