Emergency roadside telephone communications system

Details Emergency roadside telephone communications system Emergency roadside telephone communications system

1985-09-06

1988-02-09

Lev, Robert

Telephonic communications

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

Including fiber optic link within telephone network

340539, 455 33, H01B 100

Patent

active

047245387

ABSTRACT:
This invention relates to a roadside emergency system. The systems includes a roadside station which has a telephone unit similar to a mobile telephone set for a cellular mobile telephone system. When the unit is activated, it automatically generates radio signals which cause a mobile telephone switching office to dial up an emergency station (such as a highway police station). The office also automatically establishes a channel for voice communication between the roadside station and the emergency station. The roadside station is further provided with a back-up battery and an alarm to prevent tampering.

REFERENCES:
patent: 3207849 (1965-09-01), Andrews
patent: 3549810 (1970-12-01), Driscoll et al.
patent: 3582557 (1971-06-01), Friberg et al.
patent: 4176254 (1979-11-01), Tuttle et al.
patent: 4219698 (1980-08-01), Birill et al.
patent: 4577182 (1986-03-01), Millsap et al.

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