End-point identifiers in SIP
US7412521B2 · kind B2 · utility
24Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2003 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Apr 27, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2101/385
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for uniquely identifying an SIP device extends the SIP communications protocol with an end point identifier, carried for example in the header of an SIP transmission. The end point identifier is useful for routing, registration, subscription, and authentication. The end point (device) of a given user epid can be uniquely identified by creating a key from an epid and a user's address-of-record (URI). This in turn enables improved connection management and security association management when the connections/IP addresses are transient, such as when HTTPS tunneling is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.