Method of routing emergency calls

Details Method of routing emergency calls Method of routing emergency calls

1998-09-17

2000-05-23

Loomis, Paul

Telephonic communications

Special services

Service trigger

379 45, H04M 342, H04M 1104

Patent

active

060673567

ABSTRACT:
A method of routing a call, especially an emergency call made to a uniform regional or national central phone call number, which is made by a telecommunications (TC) subscriber in a publicly accessible digital TC network, to the respective geographically responsible call center, includes the steps of transmitting, as part of a calling signal, an identification of the TC subscriber making the call, using the subscriber identification to retrieve, from a database containing at least a geographic location associated with each subscriber, the location of the calling subscriber, selecting a responsible call center nearest the location of the calling subscriber, and routing the call from the subscriber to the nearest responsible call center. The method has the advantage that, in spite of possible breakdown of previous associations between telephone number prefixes and geographic locations, the subscriber's location can be reliably determined with the help of a central calling number/location data base, and the call can be routed to the respective geographically responsible call center.

REFERENCES:
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patent: 4757267 (1988-07-01), Riskin
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patent: 5347568 (1994-09-01), Moody et al.
patent: 5388145 (1995-02-01), Mulrow et al.
patent: 5748717 (1998-05-01), Chan et al.
"Telefon-Notruf-Computer", K. Wagner, Funkschau, Nov. 1982, pp. 46-49.
WPI English abstract of RUPP DE 33 21 416, publ. Dec. 20 1984 & granted Jul. 4, 1985.
WPI English abstract of Lennstrom et al. DE 35 90 468 (Aug. 28, 1986)=USP 4,689,811.

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