Method for controlling fraudulent telephone calls

Details Method for controlling fraudulent telephone calls Method for controlling fraudulent telephone calls

1995-09-19

1996-10-15

Chin, Stephen

Telephonic communications

Call or terminal access alarm or control

379145, 379 91, H04M 166

Patent

active

055662340

ABSTRACT:
A method for controlling telephone fraud of the type whereby a caller places calls or accesses services via unauthorized use of a credit card number or other authorization number. For such control, an initial call using the number and meeting a certain primary criterion (such as placement to a geographical area known to receive numerous fraudulent calls) is intercepted and it is determined whether or not that call is an authentic use of the number. If authentic, other calls are then allowed without interception, even though they may meet the primary criterion, unless or until a secondary criterion is met. Meeting the secondary criterion (which may relate to calling patterns indicative of fraud) also causes a call to be intercepted and a determination made as to whether the use is authentic. For interception due to either criterion, if the call is determined to be inauthentic, the authorization number may be removed from service. The result of the control method is a reduction in fraudulent calls, but with minimal discrimination against authentic uses of a calling authorization number.

REFERENCES:
patent: 4893330 (1990-01-01), Franco
patent: 5109408 (1992-04-01), Greenspan et al.
patent: 5127043 (1992-01-01), Hunt et al.
patent: 5131027 (1992-07-01), Hird et al.
patent: 5163086 (1992-11-01), Ahearn et al.
patent: 5335265 (1994-08-01), Cooper et al.
patent: 5345595 (1994-09-01), Johnson et al.
patent: 5357564 (1994-10-01), Gupta et al.

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