Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-01-17
2006-01-17
Lee, Andy (Department: 2663)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S410000
Reexamination Certificate
active
06987765
ABSTRACT:
A method and apparatus comprises a controller to establish a call session between a first endpoint and a second endpoint. Without exchanging call setup signaling with the first endpoint, the controller is able to pivot the call session from the second endpoint to another endpoint so that media communication can occur between the first and other endpoints. The first endpoint remains “anchored” in the call session. The pivot is accomplished by sending a call request to the other endpoint and exchanging messages with a media portal that controls the communication of packets between endpoints. The media portal contains a network address and translation module that performs translation of addresses and/or ports of media packets communicated from one endpoint to another.
REFERENCES:
patent: 5809018 (1998-09-01), Lehmusto
patent: 5933412 (1999-08-01), Choudhury et al.
patent: 5941988 (1999-08-01), Bhagwat et al.
patent: 6128298 (2000-10-01), Wootton et al.
patent: 6731642 (2004-05-01), Borella et al.
patent: 2001/0015981 (2001-08-01), Nelson et al.
patent: 1 235 406 (2002-08-01), None
R. Sparks et al.,SIP Telephony Services Examples With Call Flows, IETF Internet Draft, Oct. 1999, pgs. 1-84.
Information Science Institute ,Internet Protocol, Darpa Internet Program Protocol Specification, RFC 791, pp. 1-44 (Sep. 1981).
J. Postel,User Datagram Protocol, RFC, 768, pp. 1-3 (Aug. 1980).
S. Deering, Network Working Group Request For Comments: 2460,Internet Protocol, Version 6 (IPv6) Specification, pp. 1-33 (Dec. 1998).
H. Shulzrinne, Network Working Group Request for Comments: 1889,RTP: A Transport Protocol For Real-Time Applications, PP. 1-63 (Jan. 1996).
M. Handley, Network Working Group Request For Comments: 2543,SIP: Session Initiation Protocol, pp. 1-128 (Mar. 1999).
M. Arango, Network Working Group Request For Comments: 2705,Media Gateway Control Protocol(MGCP), pp. 1-113 (Oct. 1999).
March Sean W.
McKnight David W.
Sollee Patrick N.
Lee Andy
Nortel Networks Limited
Trop Pruner & Hu PC
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