Multiplex communications – Fault recovery – Bypass an inoperative station
Reexamination Certificate
2008-02-06
2010-10-26
Yao, Kwang B (Department: 2473)
Multiplex communications
Fault recovery
Bypass an inoperative station
C370S228000, C370S389000, C370S401000, C709S229000, C709S239000, C709S243000
Reexamination Certificate
active
07821923
ABSTRACT:
Session initiation protocol (SIP) control traffic routing decisions, such as rapid failure detection and recovery mechanisms, are based on detection of events and/or conditions that may result in suboptimal performance. The disclosed approach ensures that the SIP traffic is routed or rerouted on an optimal basis. Sample inputs to the SIP routing decisions, include integration with BFD, system metrics and other criteria to determine network and systems conditions, for dynamic decisions on where to optimally route SIP traffic. Examples leverage the B2BUA model, which maintains call state and participates in call processing, however, the examples introduce an improved routing model that is able to not only reroute SIP traffic based on failures but also upon the detection of other suboptimal conditions, e.g. excessive cost. The exemplary techniques provide significant savings by ensuring SIP peering decisions are automatically performed considering costs of peering arrangements, congestion and/or other criteria.
REFERENCES:
patent: 6157648 (2000-12-01), Voit et al.
patent: 2004/0052212 (2004-03-01), Baillargeon
patent: 2004/0071084 (2004-04-01), El-Hennawey et al.
patent: 2004/0199664 (2004-10-01), Feldman et al.
patent: 2005/0129026 (2005-06-01), Chang et al.
patent: 2005/0281204 (2005-12-01), Karol et al.
patent: 2006/0111115 (2006-05-01), Marin et al.
patent: 2006/0176805 (2006-08-01), Peters
patent: 2007/0041364 (2007-02-01), Kakadia
patent: 2007/0076591 (2007-04-01), Khan
patent: 2007/0140262 (2007-06-01), Wang
patent: 2007/0180104 (2007-08-01), Filsfils et al.
patent: 2007/0195788 (2007-08-01), Vasamsetti et al.
patent: 2008/0002716 (2008-01-01), Wiley et al.
patent: 2008/0089324 (2008-04-01), Polk et al.
patent: 2008/0219262 (2008-09-01), Roay
Jung et al., “Session & Connection Management with SIP and RSVP-TE for QOS-guaranteed Multimedia Service Provisioning”, May 23, 2005, all.
D. Katz et al. “General Application of BFD draft-ietd-bfd-generic-03.txt”, Network Working Group, Mar. 2007, 17 pages.
Donovan et al. “Session Timers in the Session Initiation Protocol (SIP)” Network Working Group, RFC 4028, Apr. 2005.
Rosenberg, et al. “SIP: Session Initiation Protocol”, Network Working Group, Jun. 2006, 269 pages.
Katz et al. “Bidirectional Forwarding Detection draft-ietf-bfd-base-06.txt” Network Working Group, Mar. 2007, 49 pages.
International Search Report and the Written Opinion of the International Searching Authority issued in International Patent Application No. PCT/US2009/033430 dated Apr. 3, 2009.
Jiri Kuthan “Sample Uses of SIP Info with Varying Reliability Needs”, Internet Engineering Task Force, Oct. 17, 1999.
Rahul Aggarwal, “Applications of Bidirectional Forwarding Detection (BFD)” RFC 3261, Juniper Networks, 2003, 34 pages.
Kakadia Deepak Kumar
Parker Benjamin
Cellco Partnership
McDermott Will & Emery LLP
Rutkowski Jeffrey M
Yao Kwang B
LandOfFree
Optimized SIP routing architecture using an integrated... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optimized SIP routing architecture using an integrated..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optimized SIP routing architecture using an integrated... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4171912