Digital timeslot and signaling bus in a digital PBX switch
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United States of America Patent
Stats
-
Dec 4, 1990
Issued Date -
N/A
app pub date -
Dec 21, 1989
filing date -
May 7, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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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