Failover system and method for IP telephony
US8159935B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 27, 2009 |
| Grant date | Apr 17, 2012 |
| Priority date | — |
| Expiry date | Aug 1, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A failover system includes a plurality of configuration controllers and a plurality of switches. The switches include a site proxy, a failover module and a routing table. A first site proxy of a first switch is designated as the active proxy and controls failover in the event a switch fails or otherwise becomes unavailable. A second site proxy of a second switch is designated as the backup proxy and controls failover in the event the first switch fails or otherwise becomes unavailable. In the event a switch fails or otherwise becomes available, the active proxy interacts with the configuration controller and reassigns the extensions associated with the failed switch to a different switch of the plurality of switches. In the event a configuration controller fails or otherwise becomes unavailable, another configuration controller becomes active and establishes communication with the plurality of switches to maintain the operational status of the IP telephony system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.