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

1989-12-21

1990-12-04

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

H04Q 1104

Patent

active

049759035

ABSTRACT:
A switch in a digital PBX system supporting both centralized an 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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