Called equipment selection method in ISDN packet switching mode

Details Called equipment selection method in ISDN packet switching mode Called equipment selection method in ISDN packet switching mode

1994-06-15

1995-10-17

Safourek, Benedict V.

Multiplex communications

Wide area network

Packet switching

370 8513, H04L 1256

Patent

active

054597218

ABSTRACT:
A packet switching method in a digital network includes a calling equipment and called equipment connected to the digital network for communication by packet switching, and further includes a destination end system to be connected to the called equipment for communication. Upon occurrence of a call demand by the calling equipment, a sub-address of the called equipment and a network address of the destination end system are inserted in a call demand packet and the call demand packet is transmitted to the digital network. Upon reception of a call setup message by the called equipment from the digital network which receives the call demand packet, the sub-address from the call setup message is extracted and a judgement is made as to whether the incoming call is designated to own equipment by checking matching of the extracted sub-address and a given sub-address assigned to own equipment. A response message to the digital network is transmitted when the incoming call is judged to designate own equipment. Upon the called equipment's reception of an incoming call packet which was transmitted by the digital network after receiving the response message, the network address from the incoming call packet is extracted and incoming call processing is performed based on the extracted network address for establishing the call.

REFERENCES:
patent: 5181199 (1993-01-01), Motoki et al.
patent: 5245606 (1993-09-01), DeSouza
patent: 5251213 (1993-10-01), Videlock et al.
patent: 5309442 (1994-05-01), Saeki
patent: 5329527 (1994-07-01), Ujihashi et al.

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