Communication between switched-circuit communication network...

Details Communication between switched-circuit communication network... Communication between switched-circuit communication network...

2003-09-05

2008-08-05

Woo, Stella L (Department: 2614)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S401000

Reexamination Certificate

active

07408922

ABSTRACT:
A gateway device is connected between a switched-circuit communication network and at least two VoIP network domains, each domain having a packet-based signaling controller. The gateway device transfers to each of the signaling controllers a registration request message so that the gateway device is simultaneously registered in the at least two VoIP network domains as a VoIP end point.

REFERENCES:
patent: 6987756 (2006-01-01), Ravindranath et al.
patent: 99/14932 (1999-03-01), None
Series H: Audiovisual and Multimedia Systems Infrastructure of audiovisual services—Systems and terminal equipment for audiovisual services, Packet-based multimedia communications systems ITU-T Recommendation H.323 (1998).
J. Toga et al., “ITU-T standardization activities for interactive multimedia communications on packet-based networks: H.323 and related recommendations” Computer Networks, vol. 31, Elsevier Science Publishers B.V., Amsterdam, NL, Feb. 11, 1999, pp. 205-223.
“Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON); Signalling for basic calls and inter domain calls, between an H.323 Terminal and a Terminal in a Switched-Circuit Network (SCN) Phase II: Scenario 1 + Scenario 2”; TS 101 322 V1.0.0, ETSI, Jul. 1999, pp. 1-30.
European Search Report, mailed Sep. 12, 2005 and Issued in corresopnding European Patent Application No. 03102571.1-2413.

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