| 摘要 |
A system for monitoring a plurality of telephone calls made to and originati ng from a common branch exchange to detect fraudulent activity, including receiving means (300) for receiving a call detail record (CDR) corresponding to each of the calls and directing the CDR to be stored in at least one queu e means (310), the CDR containing at least a billing number associated with ea ch call; means for retrieving (320) current CDRs, one at a time, from the queue means (310); processor means for comparing (320), for the current CDR, the billing number with billing numbers of previously stored CDRs in a fraud database (330); means for storing (320) the current CDRs in the fraud databa se (330); and means for generating an alert (230) when the billing number of th e current CDR matches a billing number of a previously stored CDR in the fraud database.
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