Digital timeslot and signaling bus in a digital pbx switch

Details Digital timeslot and signaling bus in a digital pbx switch Digital timeslot and signaling bus in a digital pbx switch

H - Electricity

04

Q

344/25

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

Patent

CA 1237186

DIGITAL TIMESLOT AND SIGNALING BUS IN A DIGITAL PBX SWITCH ABSTRACT OF THE INVENTION A switch in a digital PBX system supporting both centralized and distributed switching techniques. The switch has nearly universal and parallel bus between line card modules. Then a timeslot bus capable of having more than one module may communicate voice PCM or data signals during one timeslot. The bus also has a signaling bus by which line card modules are selected to communicate with a central control module by a single line to maintain the universality of the bus. Signaling information is also passed between a selected line card module and the central control module by a pair of parallel lines.

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