Methods and apparatus for registering or deregistering a user to or from an IP multimedia subsystem
US9077721B2 · kind B2 · utility
1Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2006 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | May 3, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/147
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of registering or deregistering a user to or from an IP Multimedia Subsystem (IMS) network. A SIP Application Server (SIP-AS) performs a registration or deregistration with the IMS network on a user's behalf. The registration or deregistration is performed over one of the following interfaces: a Service Control Interface (ISC) with a Serving Call State Control Function (S-CSCF), a Gm interface with a Proxy CSCF (P-CSCF), or an Ma interface with an Interrogating CSCF (I-CSCF).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.