Voice over IP auto-switching/backup for emergency calls
US7929517B2 · kind B2 · utility
4Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2005 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Dec 11, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L65/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A VoIP adapter module for a VoIP phone system switches the phone connection from a broadband connection to a wired connection when a power outage or a broadband disconnection is detected. The switch is accomplished by establishing a connection from a telephone connected to an RJ11 port on the module to a wired channel connected to a backup RJ11 port on the module. Detection for power outage is by comparing the device voltage with a reference voltage, and detection for broadband connection is by sending out a PING packet and waiting to see if a return packet is received.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.