CIRCUIT SWITCHING SYSTEM FOR INTERCONNECTING LOGICAL LINKS BETWEEN PACKET SWITCHING NETWORKS

摘要

A circuit switching system for interconnecting end point systems, suchas packet switches, compressed voice concentrators, or data multiplexers, byallowing multiple logical links on each logical channel. The circuit switchingsystem is connected to the end point systems by a number of communicationfacilities with each facility having a plurality of logical channels. For packetswitches, the circuit switching system is responsive to a first request to establish afirst logical link on a logical channel to a packet switch and is responsive to asecond request for another logical link to that packet switch to establish a secondlogical link on the same logical channel. The circuit switching system isresponsive to a third request for establishing a logical link to another packetswitch on the same logical channel for denying this request and for negotiatinganother logical channel.