Abstract:
A method for using at least one Bad Billed Number Record (BBN) to detect fraud in a telecommunication system includes the steps of generating the at least one BBN for each call attempt made using a billing product, when the call attempt satisfies any one of a plurality of fraud criteria; storing the at least one BBN in a storage queue for later retrieval; and retrieving and analyzing the at least one BBN to increment a plurality of fraud control counters according to the analysis. A system for using a plurality of BBNs to detect fraud in a telecommunications system includes a network operator service platform (OSP) for generating BBNs based on received call attempts; a network information concentrator (NIC) for temporarily storing the generated BBNs; and a fraud monitoring system for retrieving the stored BBNs, filtering out unidentifiable BBNs, analyzing identifiable BBNs, and generating alarms based on the analysis.
Abstract:
A method and device for preventing fraud in international calls in a long-distance telecommunications system, where selected customers can avoid fraud control blocks and greater granularity is achieved in blocking international destinations. In the method and device, an override flag is created in the records of the Billing Number Screening (BNS) database. When a call is made using a billing number whose corresponding record has the override flag set, the call is not stopped by fraud control blocks on certain international destinations. In addition, international destinations can be blocked with greater specificity because a Country Set Logic (CSET) field is added to the International City Code Database. The addition of CSET to this database allows particular international city destinations to be blocked from certain origin points.