Vehicular emergency message system with call restriction defeati

Details Vehicular emergency message system with call restriction defeati Vehicular emergency message system with call restriction defeati

1996-02-09

1999-03-30

Chin, Wellington

Telecommunications

Radiotelephone system

Emergency or alarm communication

455403, 455521, 455414, H04Q 720, H04Q 732

Patent

active

058900616

ABSTRACT:
A vehicle user can request emergency or roadside assistance from a response center by activating a button in the vehicle. The global positioning system is used to continuously store the vehicle location. A cellular telephone network is used to contact a response center and transfer a data string via modem containing information to assist the response center in acting on the request. Prior to attempting dialing of the cellular transceiver, a command or set of commands places the cellular transceiver into an unrestricted operating mode to provide the greatest probability of completing a call from the vehicle to the response center and from the response center to the vehicle.

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Cellular Positioning and Emergency Messaging Unit Publication, Motorola, 1994.

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