公开(公告)号：EP0818103B1

公开(公告)日：2004-02-25

申请号：EP96908243.7

申请日：1996-03-29

申请人： Azure Solutions Limited

发明人： PEEL, Stephen, John ,  WOODS, David, John ,  SCOTT, Michael ,  REGNAULT, John, Christopher ,  GIBBINGS, Christopher, John ,  EADEN, Russel

IPC分类号： H04M3/38 ,  H04M3/42 ,  H04M15/00 ,  H04M3/36 ,  H04Q3/545

CPC分类号： H04M15/47 ,  H04M3/36 ,  H04M3/38 ,  H04M3/4228 ,  H04M15/00 ,  H04M2203/6027 ,  H04M2215/0148 ,  H04Q3/54533 ,  H04Q3/54583 ,  H04Q3/54591 ,  H04Q2213/13057

摘要： A method of, and a system for, detecting possible fraudulent use of a telecommunications network. Call event records, both call initiation and call completion records, are examined. A call record has a number of key fields, e.g. called number, calling number, calling card number, and for each field in turn the key is used to access a database containing an associated set of profiles. Each profile contains an algorithm defining a measurement process to be performed on the call data, e.g. determine the call duration. The respective process results are added to a respective set of stores associated with each profile, and an alarm response is generated when a threshold of a store is reached. An additional process for e.g. a call duration of e.g. called number card calling number key fields, convert the process results to penalty points which are added to a penalty points store associated with the calling card number key of the call event record under examination. Each response is recorded in a history file for that key.