METHOD AND SYSTEM FOR JUDGING LEGAL TERMINAL

摘要

A method and system for judging a legal terminal are provided by the present invention. The method includes: a Mobile Switching Center (MSC) receives a COUNT value from a terminal; the MSC compares a COUNT value saved in an authentication entity with the received COUNT value of the terminal to determine whether they are consistent, wherein, the COUNT value saved in the MSC is the COUNT value of the legal terminal; in the case that the consistent is determined, the terminal is judged to be a legal terminal, or else the terminal is judged to be a cloned terminal. The solution of the present invention can differentiate the legal terminal from the all cloned terminal in a communications network, and avoid the cloned terminal embezzling network resource and cross-talk resulted from the embezzlement, and therefore the rights and interests of the legal terminal are protected effectively.