Data link control method and system for integrated services digi

Details Data link control method and system for integrated services digi Data link control method and system for integrated services digi

1989-11-08

1991-09-24

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

370 941, H04J 312, H04J 324

Patent

active

050519921

ABSTRACT:
There is a communication system comprising: an integrated services digital network (ISDN) having a plurality of information channels (Bch) and at least one control channel (Dch); a CPU (host computer) connected to said ISDN through a communication control processor (CCP); and a plurality of packet terminals connected to the ISDN. In the communication system, when a call request from the CPU or an incoming call request from one of the packet terminals is input to the CCP, if the B channel data link connection or the D channel data link connection for the packets has already been established between the CCP and the ISDN, the CCP selects the channel data link connection as a channel for communication with the packet terminal and multiplexes a plurality of calls to the same channel even if the other space B channels exist.

REFERENCES:
patent: 4722082 (1988-01-01), Furuya et al.
patent: 4812839 (1989-03-01), Okada et al.
patent: 4821264 (1989-04-01), Kim
patent: 4866703 (1989-09-01), Black et al.
patent: 4878216 (1989-10-01), Yunoki

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