Telephone line test kit

Details Telephone line test kit Telephone line test kit

1996-09-04

1998-05-19

Kuntz, Curtis

Telephonic communications

Diagnostic testing, malfunction indication, or electrical...

Testing of subscriber loop or terminal

379 21, 379 26, 379 30, H04M 124, H04M 308, H04M 322

Patent

active

057546240

ABSTRACT:
An electrical test kit for testing a telephone line from the terminals at the customer's end of the line includes a circuit for testing line continuity without falsely indicating to the voltage source that a telephone call has been answered, a push-button selection switch and a parallel pair of light-emitting diodes connected in reverse polarity relative to each other for determining polarity of the telephone line, and test pads in parallel with the continuity test circuit for permitting the attachment of a voltmeter so as to determine the magnitude of the internal resistance of the telephone line.

REFERENCES:
patent: 4564728 (1986-01-01), Romano
patent: 4581494 (1986-04-01), Pickens
patent: 4852145 (1989-07-01), Bevers et al.
patent: 4991196 (1991-02-01), Krebs

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