Method and system for controlling media sessions in networks that use communication protocols with distinct signaling and media channels
US7796603B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2005 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Apr 11, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L65/1069
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A media control system (MCS) enforces media control policies on systems that conform to the relevant protocol specifications (such as SIP and SDP), for example, by interpreting and potentially modifying or destroying the SDP offers embedded in the SIP signaling messages that traverse it. This enables the MCS to exercise control over SIP-associated media sessions without necessarily inserting itself into the media streams themselves. The MCS can enforce media control policies that are based either directly on information that is explicitly contained in SDP message bodies or on secondary information that can be derived from information that is contained in the SDP messages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.