Method for interfacing a telephony and an ATM network to establi

Details Method for interfacing a telephony and an ATM network to establi Method for interfacing a telephony and an ATM network to establi

1997-02-10

1999-09-21

Pham, Chi H.

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

370395, 370410, H04L 1264, H04Q 1104

Patent

active

059563346

ABSTRACT:
A method is provided for establishing a communication session over a path supported at least in part by a telephony network and an ATM network. The telephony network includes ingress and egress telephony switches and the ATM network includes ingress and egress ATM switches. A first call setup request is received at the ingress telephony switch from an originating node and the ingress telephony switch selects a first available trunk from the ingress telephony switch to the ingress ATM switch. A communications path is established over the available trunk to the ingress telephony switch. A second call setup request is transmitted from the ingress telephony switch to the egress telephony switch and the egress telephony switch selects a second available trunk from the egress telephony switch to the egress ATM switch. A third party set up command is transmitted from one of the telephony switches to one of the ATM switches requesting establishment of a virtual connection between the ingress and egress ATM switches over the ATM network. A virtual connection is established between the ingress and egress ATM switches. The egress telephony switch connects the second available trunk to a third trunk in communication with a destination node such that the destination node is informed of a request to establish a communication session with the originating node.

REFERENCES:
patent: 5568475 (1996-10-01), Doshi et al.

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