Telephone power supply arrangement

Details Telephone power supply arrangement Telephone power supply arrangement

1981-02-27

1983-06-14

Brigance, Gerald L.

179 70, 179 18FA, H04M 1900

Patent

active

043884970

ABSTRACT:
In a circuit for supplying power to a subscriber telephone device connected to a central office via a two-wire line, which circuit includes a main power supply at the central office and a switching unit at the telephone device actuatable to place the device in operation and to connect an electrical load in circuit across the line, there are additionally provided an auxiliary power supply disposed at the central office and connected across the line when the telephone device is not in operation, and a circuit connected for selectively connecting the main power supply to the line when the telephone device is in operation.

REFERENCES:
patent: 3562561 (1971-02-01), Klusterman
patent: 4272650 (1981-06-01), Bolgiano et al.

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