Cellular telecommunication switching system for providing public

Details Cellular telecommunication switching system for providing public Cellular telecommunication switching system for providing public

1993-08-30

1995-02-07

Kuntz, Curtis

Telephonic communications

Having light wave or ultrasonic link for speech or paging...

Including fiber optic link within telephone network

379 37, 379 45, 379 58, H04M 1100

Patent

active

053881478

ABSTRACT:
A cellular telecommunication switching system responsive to an emergency call from a cellular telephone to request that the geo-coordinates be transmitted from the cellular telephone and to convert those coordinates into conventional municipality or rural address location information. In one embodiment, the cellular telecommunication switching system utilizes an internal database to convert the geo-coordinates to location information. In another embodiment, the cellular telecommunication switching system utilizes an external database to perform this conversion. In yet a third embodiment, a cellular telephone performs the conversion and transmits to the cellular telecommunication switching system the location information.

REFERENCES:
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patent: 4924491 (1990-05-01), Compton et al.
patent: 5122959 (1992-06-01), Nathanson et al.
patent: 5195126 (1993-03-01), Carrier et al.
patent: 5203009 (1993-04-01), Bogusz et al.
patent: 5218637 (1993-06-01), Sheffer et al.
patent: 5223844 (1993-06-01), Mansell et al.
Sales brochure from Pactel Teletrac, Jan. 1993.
J. Candler, Ways to Outsmart Vehicle Thieves, Nation's Business, Jul. 1993, 35-36.

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