Optimized SIP routing architecture using an integrated network and systems approach
US7821923B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2008 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Nov 20, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W40/34
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.