Telecommunications – Radiotelephone system – Security or fraud prevention
Patent
1997-05-23
1999-06-29
Chin, Wellington
Telecommunications
Radiotelephone system
Security or fraud prevention
455410, 379145, H04Q 738
Patent
active
059181737
ABSTRACT:
A method for foiling cellular telephone cloning by verifying subscribers of a cellular communications network is accomplished by having each subscriber provide a multi-digit verification number (for example, a local telephone number, typically not his/her own), unique to that subscriber, to the cellular telephone company and long distance carrier to verify legitimate subscribers. The verification numbers provided by the subscribers are stored in respective databases and correspond to electronic serial numbers of subscriber telephones. Shortly after each power-up of the cellular telephone, the subscriber either invokes an automatic dialer or manually dials the verification number. A computer in the cellular network receives the subscriber's first call (containing an electronic serial number, network identification and verification number) after power-up and verifies the dialed verification number against the verification number stored in the database. In response to a match, the cellular network transmits a single ring to the subscriber telephone as confirmation of a verification; otherwise a message requesting enablement of the cellular telephone is transmitted to the subscriber telephone. A similar process is implemented in the long distance carrier to verify legitimate subscribers when they travel to an area not serviced by their local cellular network. The non-local cellular network receives a call and routes the information to the subscriber's long distance carrier for verification. Alternatively, the long distance carrier may forward the information to the subscriber's local cellular network for verification.
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Chin Wellington
Jama Isaak R.
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