Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of network terminating interface – subscriber trunk...
Patent
1994-09-26
1997-12-16
Kuntz, Curtis
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Testing of network terminating interface, subscriber trunk...
379 10, 379 14, 379 15, H04M 308, H04M 322
Patent
active
056994028
ABSTRACT:
A line test system for diagnosing and segmenting faults in a switched telephone network. The system includes a remote measurement unit installed at a switch and a test system controller. The test system controller stores data about operating parameters of each of the subscriber lines when they are believed to be free of faults. When a fault is reported, the parameters are measured again. By comparison of the measured parameters with the stored parameters, the fault can be segmented between the premise and the network. Segmentation is performed using knowledge based analysis techniques. The actual source of the fault once it is repaired is also stored by the test system controller. This historical information is used to improve the accuracy of the knowledge based analysis techniques used for segmentation.
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Bauer Frank R.
Groessl David J.
Rosen Joseph S.
Schmidt Kurt E.
Gamache Richard E.
Kuntz Curtis
Shankar Vijay
Teradyne, Inc.
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