Telephone system having space divided speech channels and a sepa

Details Telephone system having space divided speech channels and a sepa Telephone system having space divided speech channels and a sepa

1977-06-23

1979-01-23

Brown, Thomas W.

179 15BY, 179 18AD, H04J 312

Patent

active

041362632

ABSTRACT:
A telephone intercommunications system has speech channels to which the telephone stations of the system can be selectively linked, a plurality of data channels in time-division multiplex to which the telephone stations can be linked for the transmission of data therebetween, common data synchronizing means, and for each telephone station (1) electronic means for generating a cyclically-recurring frame of data channels, (2) electronic means for writing data into a data channel, (3) electronic means for reading data in each data channel, (4) electronic means for recognizing data appertaining to the channel, (5) electronic means for causing the station to be linked to a speech channel identified by a data channel.

REFERENCES:
patent: 1563652 (1925-12-01), Powell
patent: 3519757 (1970-07-01), Anderson et al.
patent: 3643030 (1972-02-01), Sparrendahl
patent: 3728492 (1973-04-01), Cappetti et al.
patent: 3749848 (1973-07-01), Knollman et al.
patent: 3781478 (1973-12-01), Blahut et al.
patent: 3843845 (1974-10-01), Ridley

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