Mehtod and apparatus for fraud control in cellular telephone systems utilizing RF signature comparison

摘要: A method and apparatus for fraud control in cellular telephone systems. Call records from a switch are scanned to identify fraudulent phone based on its behavior. An identifier, e.g., radio frequency (RF) signature, representative of the is stored channel editor at cell site. database identifiers may comprise positive validation storing all valid phones used system, or it be negative known phones. intercepts call origination request transmitted by phone, processor compares one more characteristics transmitting identifiers. The then prevents completing when comparison indicates that fraudulent. can prevented (1) re-routing customer service "fraud hot line" number, (2) interrupting request, (3) "hang-up" message (4) site, (5) "tear-down"