Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1993-06-29
1995-05-30
Kuntz, Curtis
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
379 58, 455 331, H04M 1100
Patent
active
054209102
ABSTRACT:
A method and apparatus for fraud control in cellular telephone systems. Call records from a switch are scanned to identify a fraudulent cellular phone based on its behavior. An identifier, e.g., a radio frequency (RF) signature, representative of the fraudulent phone is stored in a control channel editor at a cell site. A database of identifiers may comprise a positive validation database storing the identifiers for all valid phones used in the cellular telephone system, or it may be a negative validation database storing the identifiers for known fraudulent phones. A control channel editor intercepts a call origination request transmitted by a phone, and a control processor compares one or more characteristics of the phone transmitting the call origination request to the database of identifiers. The control processor then prevents the call origination request from completing when the comparison indicates that the phone is fraudulent. The call origination request can be prevented from completing by (1) re-routing the call to a customer service or "fraud hot line" number, (2) interrupting the call origination request, (3) transmitting a "hang-up" message to the phone, (4) transmitting a "hang-up" message to the cell site, or (5) transmitting a "tear-down" message to a switch
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Mobile Phone News Article, "Defense Tecnologies Employed for Cellular Fraud Management", vol. 12, No. 11, Mar. 14, 1994.
Mobile Phone News Article, "TRW's Phoneprint Added to Cellular's Anti-Fraud Arsenal", vol. 11, No. 41, Oct. 25, 1993.
Telephone Engineer & Management Article, "Cellular Carriers Lose Estimated $100-300 Mil to Fraud", p. 62, Dec. 1, 1993.
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Daniels David L.
Rudokas Ronald S.
Storch John A.
AirTouch Communications
Chernoff Michael B.
Kuntz Curtis
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