System and method for media gateway negotiation
US9112959B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 8, 2008 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | Oct 14, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/127
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and method of negotiating Media Gateways (MGs) between a plurality of call control nodes (CCNs). The system includes a first CCN which builds an original list of identifiers associated with at least one MG capable of being used in a call by the first CCN. The system also includes a second CCN for receiving the original list of identifiers from the first CCN. The second CCN removes from the original list any identifiers associated with any MG in the original list of identifiers which is not capable of being used in the call by the second CCN. The second CCN then forms a modified list of identifiers associated with at least one MG capable of being used in a call by the first CCN and the second CCN. The second CCN also selects a specified MG from the modified list and sends a first backward message from the second CCN to the first CCN identifying the specified MG. The first CCN may then validate that the specified MG is on the original list of identifiers and selects the specified MG for the call.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.