| 摘要 |
<p>A calling entity database (1) is prepared in which calling entities are divided into a series of classes of calling entities (2) which classes of calling entities (2) will be determined by various traits of the calling entities such as, for example, demographics, previous account payment history and so on. Then a call trait database (3) is provided, for example, international numbers called, value of calls and so on. Then various fingerprints (7) and then fingerprint templates are prepared from the call traits. A class of calling entity is chosen (5) and then a control fingerprint template is prepared from control fingerprints of such call traits and then various rules of comparison (8) are provided. The control template and the actual template of each calling entity within the class of calling entities are compared (9) and subject to the rules of comparison (8) the similarity is assessed in step (10) and if there is no similarity then it ends and if there is a similarity a control technique is provided in step (12). This control technique could be for example cutting off the calls, it could be using some marketing tool and so on. <IMAGE></p> |
