Signal transfer system for time division switching systems

Details Signal transfer system for time division switching systems Signal transfer system for time division switching systems

1978-06-21

1980-03-25

Stewart, David L.

Multiplex communications

Wide area network

Packet switching

179 7R, H04J 312

Patent

active

041952057

ABSTRACT:
A signalling arrangement for use in PCM systems includes a transfer control for determining whether signalling between exchanges should be transmitted over a speech channel or a signalling channel. If signalling is directed to information for setting up a call, a speech channel is used, whereas supervisory information employs a signalling channel. A marking memory is used having a memory cell per speech channel. A bit is stored in each memory cell for transfer of call set-up information.

REFERENCES:
patent: 3394230 (1968-07-01), Kinder
patent: 3549814 (1970-12-01), Jaeger
patent: 3824349 (1974-07-01), Buchner
patent: 3925620 (1975-12-01), Eastrom
patent: 3984642 (1976-10-01), Potter

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