Media gateway connection information recovery
US7533174B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2000 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Mar 16, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M2215/0164
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a packet-based telephony network, a media gateway provides information on active media path connections to an active call server. For instance, this data may be provided to a backup call server to keep the backup call server in a warm standby mode. The backup call server polls a media gateway to retrieve a table of information on active media path connections. The polling may be done periodically or only during switchover from the active call server to the backup call server. After switchover, the backup call server has all necessary details about active media path connections to provide accurate billing information. Alternatively, after a temporary failure at the active call server, the active call server may send a request to the media gateway to retrieve a table of information on active media path connections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.