SIP user agent with simultaneous multiple registrations

Details SIP user agent with simultaneous multiple registrations SIP user agent with simultaneous multiple registrations

2004-09-30

2011-11-08

Dollinger, Tonia L (Department: 2443)

Electrical computers and digital processing systems: multicomput

Computer-to-computer session/connection establishing

C709S206000, C709S221000, C709S228000, C370S238000, C370S466000

Reexamination Certificate

active

08055778

ABSTRACT:
A method, device, and computer program product for Session Initiation Protocol (SIP) communications is disclosed. The method, device, and computer program product allow a SIP user agent of a SIP-enabled device to register with a plurality of SIP registrars. The plurality of SIP registration may occur simultaneously or sequentially, based on preference information for the SIP registrars.

REFERENCES:
patent: 2002/0114282 (2002-08-01), MeLampy et al.
patent: 2003/0137991 (2003-07-01), Doshi et al.
patent: 2004/0003046 (2004-01-01), Grabelsky et al.
patent: 2006/0020698 (2006-01-01), Whipple et al.
patent: 2008/0040461 (2008-02-01), Kumbalimutt et al.
patent: WO 02/39692 (2002-05-01), None
patent: WO 03/044548 (2003-05-01), None
patent: WO 2004/0025915 (2004-03-01), None
Lass et al., “SIP Telephony Device Requirements, Configuration and Data”, IETF Standard-Working Draft, Internet Engineering Task Force, IETF, CH, Nov. 2002, pp. 1-37.

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