Line test termination device

Details Line test termination device Line test termination device

1981-01-13

1983-02-08

Robinson, Thomas A.

179 81C, H04M 124

Patent

active

043731201

ABSTRACT:
A line test termination device to provide a characteristic signature recognizable by the telephone central office when a continuity test is made on a subscriber line having a pair of electrically conductive paths includes a resistor and a diode connected in series between the conductive paths. A neon tube device placed in series with the resistor and diode will be illuminated when a ringing voltage is applied to the line and no telephone ringing circuit is connected thereto.

REFERENCES:
patent: 3469036 (1969-09-01), Meri
patent: 3600678 (1971-08-01), Garrett 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: 4288660 (1981-09-01), Fasano

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