SIP out-of-dialog REFER mechanism for handoff between front-end and back-end services
US7872994B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2006 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | Mar 15, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L65/403
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a method includes steps of verifying, by a first server, that a user associated with an endpoint is authorized to access a service provided by a second server. The first server then sends a Session Initiation Protocol (SIP) out-of-dialog REFER with a Replaces header to the second server. A dialog identification ID of a session between the endpoint and the first server is embedded within the Replaces header. The SIP out-of-dialog REFER causes the second server to send a SIP INVITE with the Replaces header to the endpoint to establish a new session between the endpoint and the second server. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.