Patent ID: 6208720
Filing Date: 2001-03-27
Classification: H04M

Abstract:
A rules-based method of threshold detection, comprising the steps of:(1) receiving a generating event record;(2) enhancing the generating event record, identifying one or more features associated with the generating event record and generating a vector for identifying the generating event record and the one or more features associated with the generating event;(3) placing a feature value in the vector for each of the one or more features associated with the generating event record, each feature value indicating a number of occurrences of the associated feature that occurred within a predetermined period of time;(4) selecting one or more threshold rules from a database of threshold rules based on the features in the vector for testing the enhanced generating event record;(5) testing the enhanced generating event record against the one or more selected threshold rules, including testing the enhanced generating event against a deactivation hot termination attempt (DHTA) rule to determine whether a telephone call is directed to a telephone number to which a previous telephone call was directed using a recently deactivated card, if the card was deactivated within a predetermined period of time; and(6) generating an alarm if the enhanced generating event record exceeds the one or more selected threshold rules.