Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal
Patent
1989-07-11
1991-02-05
Schreyer, Stafford D.
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Testing of subscriber loop or terminal
379 21, 379 29, 379 30, H04M 330
Patent
active
049911961
ABSTRACT:
Test apparatus for signalling systems having plural terminal units (26X) and line-pair connections (24X) therefor, comprises off-line test equipment (10) for parameters or conditions of said connections (24X), and connection means (30) of or for the test equipment (10) relative to said system. The connection means (30) comprising plural connectors (32X, 34X) as inputs for a number of said connections (24X) to said terminal units and multi-way switch means (40X) affording selection of said inputs (32X) one at a time for communication with other facilities of said off-line test equipment (10).
REFERENCES:
patent: 4424421 (1984-01-01), Townsend et al.
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