Failure protection for packet telephony
US7286467B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 12, 2002 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Sep 16, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention provides a fail-over architecture for packet telephony applications. A media gateway is configured to have at least two interfaces, each of which is associated with a communication path. The communication paths are isolated from one another as much as possible, and may each be used to facilitate the transfer of packets for a communication session. The fail-over process implemented by the gateway includes receiving packets from a remote gateway, and when an interruption in incoming packets occurs, switching to another communication path for both transmission and reception of packets to facilitate the communication session with the remote gateway. As such, an interruption in packets due to a failure in a primary communication path results in both gateways automatically switching to a redundant communication path to support the communication session.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.