System and method for providing the precise location of a...

Details System and method for providing the precise location of a... System and method for providing the precise location of a...

2011-03-22

2011-03-22

Woo, Stella L (Department: 2614)

Telephonic communications

Emergency or alarm communications

Central office responsive to emergency call or alarm

C379S037000

Reexamination Certificate

active

07912185

ABSTRACT:
The present invention relates to providing precise location data to a 911 operator of a cell phone operator who initiates a 9-1-1 call and, more particularly, to the interaction of transmitting circuitry in a cellular telephone and complementary receiving circuitry in a landline telephone or stand-alone unit. When a cellular 9-1-1 call is made within proximity of a landline telephone or a stand-alone unit, an interaction takes place between the enabled cell phone and the landline telephone. Upon receiving and decoding the cellular transmission, the landline telephone or stand-alone unit transmits a 9-1-1 call which provides more precise location data (in the form of the landline telephone's subscriber's identification) to a 911 operator than if the 9-1-1 call was simply connected to the operator from the cell phone. The present invention has further applications for locating a 9-1-1 call from a landline telephone connected through a PBX-type master switching box.

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patent: 6377169 (2002-04-01), Yanagisawa
patent: 2004/0033795 (2004-02-01), Walsh et al.
patent: 2005/0084075 (2005-04-01), Kotzin

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