Telecommunications exchanges allocating variable channel...

Details Telecommunications exchanges allocating variable channel... Telecommunications exchanges allocating variable channel...

H - Electricity

04

Q

344/25

H04Q 11/04 (2006.01) H04L 12/40 (2006.01)

Patent

CA 1253243

ABSTRACT In a time division multiplexed digital switching system intercommunication between telephony groups is by way of a serially operated data bus (2). Allocation of bandwidth on the data bus (2) is on a needs basis under control of a common control responsive (3) to requests from either applications processors or interface modules (10,20). The interface modules (10,20) receive addressing information from the common control (5) on a serially operated control bus (1) only when a change of status of a communication at least partly affecting that module (10,20) occurs. Such changes of status include new communication set-ups, communication clear-down, bandwidth increase and bandwidth decrease. Dynamic re-allocation of bandwidth of the data bus (2) occurs without affecting communications in progress.

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