Digital time division switching arrangement

Details Digital time division switching arrangement Digital time division switching arrangement

H - Electricity

04

Q

344/25

H04Q 11/04 (2006.01)

Patent

CA 1089963

A DIGITAL TIME DIVISION SWITCHING ARRANGEMENT Abstract of the Disclosure The present invention relates to a digital time-division switching arrangement capable of interfacing with a plurality of PCM communication lines on one side and a separate plurality of transmission channels on the other side. A first processor primarily tracks call progress by scanning signalling bits indicating on/off hook state changes and a second processor controls the action of a time slot interchanger which both assembles and disassembles channel data and telemetry messages and establishes and breaks down calls while connecting appropriate service circuits to the communication lines during the progress of a call.

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