METHOD FOR CONTROLLING PRESENCE OF TERMINAL ON AN ACCESS POINT TO A TELEPHONE NETWORK

摘要

The invention concerns a method for controlling the presence of a terminal (10) on an access point (31) to a first telephone network via a second communication network, said access point (31) being defined by an address in said second communication network. The invention is characterized in that said method includes the following steps: in an initializing phase, associating with said access point (31) a certification module (33); establishing a correspondence table between an identifier of said terminal (10) and said access point (31) address; then in a second controlling phase, requesting from the terminal (10) its identifier and deducing therefrom by means of said correspondence table the address of said access point (31) in the second network; sending, to said address, a challenge (RAND) so as to provide same to the associated certification module (33); determination by the certification module (33) of a reply (MAC; RAND) to said challenge (RAND); transmitting said reply (MAC; RAND) to the terminal (10); returning by the terminal (10) a message (GA-RC Register Request) containing said reply; verifying the reply (MAC; RAND) contained in said message. The invention is applicable to access to a mobile telephone system operator's network via a stationary telephone network.