Telephonic communications – Call or terminal access alarm or control – Fraud or improper use mitigating or indication
Patent
1996-05-16
1998-06-16
Zele, Krista
Telephonic communications
Call or terminal access alarm or control
Fraud or improper use mitigating or indication
379377, 379393, H04M 166
Patent
active
057683557
ABSTRACT:
Disclosed is a three-way call detection system that uses digital signal processing to identify a third party connection. The disclosed invention operates by establishing a baseline ambient, or background, noise level, and detecting when the signal noise level drops below the ambient noise level. When the current signal noise level drops below the ambient noise level, the system assumes that a three-way conference call has been attempted by the called party.
REFERENCES:
patent: 3626107 (1971-12-01), Armstrong et al.
patent: 3660610 (1972-05-01), Hestad et al.
patent: 4387274 (1983-06-01), Stein et al.
patent: 4477698 (1984-10-01), Szlam et al.
patent: 4552996 (1985-11-01), De Bergh
patent: 4802207 (1989-01-01), Uchida et al.
patent: 4803718 (1989-02-01), Neil et al.
patent: 5216702 (1993-06-01), Ramsden
patent: 5283825 (1994-02-01), Druckman et al.
patent: 5287401 (1994-02-01), Lin
patent: 5319702 (1994-06-01), Kitchin et al.
patent: 5394465 (1995-02-01), Jo
patent: 5428662 (1995-06-01), Hamilton
patent: 5450485 (1995-09-01), Hamilton
patent: 5535261 (1996-07-01), Brown et al.
patent: 5539812 (1996-07-01), Kitchin et al.
patent: 5619561 (1997-04-01), Reese
Anderson, Susan, "Three-Way Call Detect . . . Close Enough to Perfect?", Correctional Communications Quarterly, pp. 16-20, Oct. 1993.
Jaeger Michael S.
Salibrici William
Shenoi Kishan
Spadaro Thomas R.
Science Dynamics Corporation
Wolinsky Scott
Zele Krista
LandOfFree
Three-way call detection system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Three-way call detection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three-way call detection system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1735433