Telephonic communications – Call or terminal access alarm or control – Fraud or improper use mitigating or indication
Patent
1992-07-29
1994-06-07
Dwyer, James L.
Telephonic communications
Call or terminal access alarm or control
Fraud or improper use mitigating or indication
379199, 379386, 379114, 379145, H04M 320, H04M 166
Patent
active
053197020
ABSTRACT:
Methods and apparatus for use in conjunction with a telephone or with equipment in telecommunication with a remote telephone are disclosed. The apparatus provides an indication as to whether a remote party using the remote telephone has performed a specific act causing the generation of a hook flash-type signal which is detected by the apparatus. The apparatus includes a low pass filter for passing energy having frequencies below about 500 Hz, and energy detector for detecting a specific electrical energy pulse having been filtered by the low pass filter and having a predetermined minimum magnitude. The apparatus also includes software for cooperating with the energy detector to detect a specific event(s) occurring on the telephone line during a predetermined maximum time window following the detection of a specific pulse. The detection of the specific event(s) provides an indication as to whether the remote party has performed a specific act such as attempting to initiate a 3-way conference call.
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Johnson Terry D.
Kitchin Dwight W.
Passe Scott D.
Schott Alan K.
Dwyer James L.
Hunter Daniel S.
Tele-Matic Corporation
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