Patent ID: 7266364
Filing Date: 2007-09-04
Classification: H04M,H04W

Abstract:
1. A fraud verification apparatus, comprising: an abnormality detection unit detecting abnormal communications by a portable terminal for performing wireless communications; a subscriber information storage unit storing subscriber identification information for identifying a subscriber of a wireless communications system, authentication information used for an authentication of the subscriber, and a separator for separating the subscriber identification information from the authentication information; a separator management unit changing the separator at predetermined intervals or as needed, and notifying the separator to the portable terminal; and a fraud verification unit verifying whether or not the abnormal communications detected by the abnormality detection unit are communications based on an illegal call according to a comparison result between the subscriber identification information, the separator and the authentication information stored in the portable terminal and included in call control information transmitted when the portable terminal makes a call and the subscriber identification information, the separator and the authentication information stored in the subscriber information storage unit, and detecting the illegal call from a verification result.