Automatic telecommunications systems
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United States of America Patent
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Nov 3, 1992
Grant Date -
N/A
app pub date -
Sep 21, 1989
filing date -
Sep 30, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An automatic telephone system enabling subscribers access to more than one network (3,4). The subscriber's line (2) accesses the networks (3,4) via a highway providing at least two traffic channels (B) and one signalling channel (D). The signalling channel (D) conveys call setting and other signalling for calls set up via any traffic channel (B). Access of a particular traffic signal channel to a particular network is provided by an intelligent multiplexer/concentrater (1) in response to a network identifier carried by the signalling channel, for example an appropriate value of a SAPI (Service Access Point Identifier) in the case of an ISDN I-Series signalling system.
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