Access procedure service through a terminal connected to a communication network

Access procedure service by a user, via a first communication terminal (1) connected to a communication network (100), said terminal connected to a second Terminalon wireless communication (2) being on the other hand via a link additional transmission (101) other than said decomunicacion network, said method comprising the following steps: - establishment of a communication session (12, 13) between the first (1) and second (2) terminals mediantedicho additional transmission link (101 ), - performing a first test user authentication producing a first authorization inaccessing service or denial of access as a result of said first authentication test, - data access (17) to the first terminal (1) from the second terminal (2) via said additional link detransmision, and - providing the service (27) to the first terminal (1) via said communication network (100) withthe proviso that access data transmitted identification parameters comprise a abonadoa the communication network associated with the second terminal (2); said method being characterized in that said first authentication test is performed in the terminal delsegundo within wireless communication (2), and because the service provision sets (27) of the first terminalcon the condition that the access data (17) transmitted to first terminal (1) from the second terminal (2) further comprises said first access authorization according to results from the first test of authorization.