Voice over IP architecture

Details Voice over IP architecture Voice over IP architecture

2006-11-21

2006-11-21

Nguyen, Hanh (Department: 2616)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S389000, C370S401000, C370S410000, C379S228000

Reexamination Certificate

active

07139263

ABSTRACT:
A Voice over Internet Protocol (VoIP) network is described in which session state is maintained in access switches, but not signaling gateways which maintain transaction state only during pendency of a related transaction. The signaling gateway further provides transparent inter-operation between the VoIP network and non-IP networks, such as the PSTN, by means of a translator which directly translates messages between the networks.

REFERENCES:
patent: 6683881 (2004-01-01), Mijares et al.
patent: 6765912 (2004-07-01), Vuong
patent: 6915421 (2005-07-01), Kalmanek, Jr. et al.
patent: 6920144 (2005-07-01), Niermann

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