TECHNIQUE FOR CONTROLLING FRAUDULENT USE OF A TELECOMMUNICATION SERVICE INCLUDING INFORMATION ASSISTANCE

摘要

The phone number used by a caller accessing a telecommunication service is derived. For example, this phone number may be used to look up in a first database th e name of the user registered with the service, and in a second database the name of the subscriber assigned the phone number. If the two names correspond, the caller is provided with the telecommunication service. Otherwise, a fraud has been detected and various consequences may b e visited upon the caller or the user. Some of these consequences include denying use of the service, charging the caller extra for use of the service, etc.