Call control system for a subscriber transmission device

Details Call control system for a subscriber transmission device Call control system for a subscriber transmission device

1997-02-03

2000-03-21

Hsu, Alpus H.

Multiplex communications

Pathfinding or routing

Through a circuit switch

370384, 370524, 379220, 379230, 379269, H04J 312, H04M 706, H04Q 1104

Patent

active

060410523

ABSTRACT:
A call control system can cope with a plurality of exchanges that support call control messages issued in accordance with different protocols. The call control system for use in a subscriber transmission device is located along a transmission path between a plurality of subscribers and a plurality of exchanges. The call control system includes call control message terminal sections, each of which is provided for each of the protocols that are supported by the exchanges for terminating a data link for sending and receiving a call control message to and from a corresponding exchange. A call change data processor is provided in the system for detecting a call and a clearance by a subscriber, and for requesting the call control message terminal section, which supports a protocol that corresponds to a protocol of an exchange to which is connected to the subscriber, to transmit the detected contents to the exchange that supports the protocol.

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