Telephonic communications – Diagnostic testing – malfunction indication – or electrical... – Testing of subscriber loop or terminal
Patent
1996-01-03
1998-05-26
Kuntz, Curtis
Telephonic communications
Diagnostic testing, malfunction indication, or electrical...
Testing of subscriber loop or terminal
379 12, 379 35, 379265, H04M 124, H04M 308, H04M 322
Patent
active
057578893
ABSTRACT:
A voice monitoring method which is capable of preventing an occurrence of the interruption of a call and reducing the burden of switching software, and also capable of monitoring the contents of a call whose communication path is performed within the same line switch installed in a remote place is provided. A voice from a monitored subscriber telephone set 6-1 is distributed at a line switch 4-1 to a voice monitor path (unidirectional path) 8-1, and a voice from a subscriber telephone set 6-2 of the other party is distributed at the line switch 4-1 to a voice monitor path (unidirectional path) 8-2. The distributed voices are given through a time-division switch 3 to the first and second terminals of a three-way trunk 5, are mixed at the three-way trunk 5, and are sent through the third terminal to a monitor telephone set 7.
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Kuntz Curtis
NEC Corporation
Tieu Binh K.
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