Communications switching system

Details Communications switching system Communications switching system

H - Electricity

04

Q

344/25

H04Q 11/04 (2006.01)

Patent

CA 1254981

ABSTRACT OF THE DISCLOSURE A communication switching system for routing digital voice and data signals and message signals between a plurality of peripheral circuits disposed in one or more peripheral subsystems and a main controller. Each peripheral subsystem is comprised of a peripheral switch matrix controlled by a peripheral control processor for switching the voice and data signals between predetermined peripheral circuits and the circuit switch matrix. The voice, data and message signals are transmitted through a circuit switch matrix of the main controller on predetermined time slot channels. The message signals are transmitted via communication controllers associated with the main controller and each of the peripheral subsystems according to a bit oriented data link protocol. The message signals are transmitted asynchronously during a predetermined one or more dynamically allocated time slot channels of the circuit switch matrix. The data link protocol guarantees error free transmission of a plurality of message signals. The communication system is inexpensive and efficient since both voice and data transmission as well as messaging is effected through use of a single circuit switch matrix.

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