Telephone interface-test device

Details Telephone interface-test device Telephone interface-test device

1984-10-09

1986-04-08

Schreyer, Stafford D.

1791753F, H04B 346

Patent

active

045814945

ABSTRACT:
A telephone-telephone line tester wherein a telephone line serving a user is selectively coupled and uncoupled to either or both an audio amplifier or a user's telephone circuit whereby telephone user difficulties may be readily determined as between the telephone line or user's circuit and equipment.

REFERENCES:
patent: 3976849 (1976-08-01), Champan
patent: 4388501 (1983-06-01), Ahuja
patent: 4513176 (1985-04-01), Fostveit

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