Audible line test termination device

Details Audible line test termination device Audible line test termination device

1981-05-11

1983-01-11

Robinson, Thomas A.

179 84L, H04M 126, G01R 1914, H04B 346

Patent

active

043683630

ABSTRACT:
An audible test termination device for providing a characteristic signature to the telephone central office and an audible signal to the customer when a continuity test is made on a subscriber line having a pair of electrically conductive paths includes a miniature audio indicator and a minimum of associated electrical components to indicate to the central office test operator and the customer that the telephone subscriber line is in operating order. One embodiment of the instant invention may be utilized as an additional high impedance ringer for the customer. The present device may be permanently installed across the subscriber line.

REFERENCES:
patent: 3600678 (1971-08-01), Garrett et al.
patent: 3896270 (1975-07-01), Kopec et al.
patent: 3941950 (1976-03-01), Dunwoodie et al.
patent: 3951248 (1976-04-01), Feiner et al.
patent: 3976849 (1976-08-01), Champan
patent: 3983338 (1976-09-01), Mathauser
patent: 4209671 (1980-06-01), Charles et al.
patent: 4264894 (1981-04-01), Ellington
patent: 4288660 (1981-09-01), Fasano

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