Clone terminal detection system and method

DETAILED DESCRIPTION It is an object of the present invention to provide a clone terminal detection system and method capable of detecting the presence of a clone terminal without causing a mobile terminal to have a special function of detecting a clone terminal.
In order to achieve the above object of the present invention, there is provided a clone terminal detection system comprising first storage means for updating and storing position registration information of a mobile terminal, which includes a telephone number, on the basis of a position registration request from one of the mobile terminal and a clone terminal illegally copied from the mobile terminal, comparison means for comparing position registration information of an origination request terminal with the position registration information stored in the first storage means at the time of origination request from one of the mobile and clone terminals, and detection means for detecting the presence of the clone terminal having the same telephone number as that of the mobile terminal on the basis of a comparison result from the comparison means.