Emergency roadside telephone system

Details Emergency roadside telephone system Emergency roadside telephone system

1977-12-27

1979-11-27

Claffy, Kathleen H.

179 2E, H04M 1104

Patent

active

041762541

ABSTRACT:
An emergency roadside telephone system includes a plurality of self-powered, emergency telephone terminals positioned at remote locations, such as along roadways, to permit communication with a central station in order to obtain emergency assistance. Each emergency telephone terminal has a transmitter and a receiver for communication with the central station, a handset for providing voice communication and a plurality of emergency switches carrying symbols representative of various types of emergency assistance required such that a caller can request emergency assistance either by voice communication with an operator at the central station or, if there is a language barrier, by actuating the emergency switches.

REFERENCES:
patent: 3441858 (1969-04-01), Graham
patent: 3622999 (1971-11-01), Getz et al.
patent: 3939417 (1976-02-01), Cannalte et al.
patent: 3986119 (1976-10-01), Hemmer, Jr. et al.
patent: 4040013 (1977-08-01), Carlson
"Characteristics of Motorist Aid Communications Systems", T. Cranston et al., IEEE Trans. Veh. Tech., vol. VT-19, No. 1, 2/1970, pp. 74-81.

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