Wireless peripheral device for allowing an IP softphone to...

Details Wireless peripheral device for allowing an IP softphone to... Wireless peripheral device for allowing an IP softphone to...

2006-01-24

2006-01-24

Gelin, Jean (Department: 2681)

Telecommunications

Radiotelephone system

Emergency or alarm communication

C455S404200, C379S037000, C379S045000

Reexamination Certificate

active

06990328

ABSTRACT:
Upon detecting the origination of an emergency call to a public safety answering point (PSAP), an IP softphone places this call over a cellular network rather than utilizing data communication. By placing the emergency call over the cellular system, the call is automatically routed by the cellular system to the appropriate PSAP, and the cellular system also provides to the PSAP the location of the IP softphone. The IP softphone utilizes a peripheral that provides the radio frequency circuitry necessary to place the emergency call to the PSAP.

REFERENCES:
patent: 5479482 (1995-12-01), Grimes
patent: 6154658 (2000-11-01), Caci
patent: 6246688 (2001-06-01), Angwin et al.
patent: 6266397 (2001-07-01), Stoner
patent: 6678357 (2004-01-01), Stumer et al.
patent: 6807564 (2004-10-01), Zellner et al.
patent: 2002/0136364 (2002-09-01), Stumer et al.
patent: 2003/0063714 (2003-04-01), Stumer et al.

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