Telephonic communications – Call or terminal access alarm or control – Fraud or improper use mitigating or indication
Reexamination Certificate
2005-05-17
2005-05-17
Isen, Forester W. (Department: 2644)
Telephonic communications
Call or terminal access alarm or control
Fraud or improper use mitigating or indication
C379S406140, C379S207010
Reexamination Certificate
active
06895086
ABSTRACT:
Disclosed herein is a three-way call detection system and method for detecting the addition of a third party to a pre-existing telephonic connection between a first party and a second party. The system comprises a meter for measuring the amplitude of a line voltage of a telephonic connection between a first party and a second party.
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