Line performance test system

Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal

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379 1, 379 27, H04M 124

Patent

active

059828528

ABSTRACT:
Apparatus for interconnecting the analog subscriber loops of two devices, such as central office equipment and/or central office emulators. The apparatus that is capable of switching a second central office emulator into a series connection between a first central office emulator and a subscriber unit. The apparatus includes a controller circuit for automatically performing the above-described switching. The apparatus also includes an off-hook detector circuit for providing the control circuit with an indication of the off-hook status of an analog subscriber unit. The device provides a solution to the disadvantages associated with the telecommunications test equipment presently available.

REFERENCES:
patent: 5402073 (1995-03-01), Ross
patent: 5471517 (1995-11-01), Nakagawa
patent: 5799060 (1998-08-01), Kennedy et al.
patent: 5875229 (1999-02-01), Eyuboglu et al.

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