Apparatus and method for a cellular freeway emergency telephone

Details Apparatus and method for a cellular freeway emergency telephone Apparatus and method for a cellular freeway emergency telephone

1985-11-25

1988-11-29

Lev, Robert

Telephonic communications

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

Including fiber optic link within telephone network

455 33, 455313, 379 63, H04M 1100

Patent

active

047887117

ABSTRACT:
A self-contained cellular emergency roadside call box is disclosed without the use of external telephone lines. The call box is solar powered with battery storage and comprises a controller coupled to a cellular transceiver. The controller is also coupled to a solar array and battery which is recharged through the controller. The call box communicates through a radio-telephone link established by the cellular transceiver to a cellular telecommunication system. The cellular telecommunication system includes a call site controller and mobile telephone switching terminal. Each call box comprises a plurality of status subcircuits for monitoring conditions such as battery condition and transmitter status. The call box communication and the status are processed by a micro processor which generates appropriate commands required by the cellular transceiver. Information can be transmitted bidirectionally between each of the call boxes and the communication applications processor. An interactive flow of information is exchanged with the call box and the functional condition is monitored.

REFERENCES:
patent: 3844840 (1974-10-01), Bender
patent: 4176254 (1979-11-01), Tuttle et al.
patent: 4219698 (1980-08-01), Birilli et al.
patent: 4577182 (1986-03-01), Millsap et al.
patent: 4639914 (1987-01-01), Winters
patent: 4724538 (1988-02-01), Farrell

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