Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal
Patent
1992-06-30
1995-06-13
Chin, Stephen
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Testing of subscriber loop or terminal
379 1, 379 58, 379 59, 455 331, 455 671, H04M 124, H04M 1100, H04Q 700, H04B 1700
Patent
active
054250765
ABSTRACT:
A testing system for wireless communication networks, particularly cellular networks, having a test set located in a cell site which communicates through the cell's base station to a responder at the mobile telephone switching office (MTSO). The test set, which includes a measurement module, controller, modem, and cellular phone, initiates the call to the responder, and directs the responder to transmit and receive certain test signals which are then measured by the measurement module. The tests preferably include standard "105" tests. The test set, which may be fixed or mobile, provides essentially continuous monitoring of voice channels within a given cell, and can send an alarm in near real-time to the network control center when a faulty voice channel is detected.
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Chin Stephen
Griswold Gary L.
Kirn Walter N.
Loomis Paul
Minnesota Mining and Manufacturing Company
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