Session establishment method, session establishment system, the session server and communication terminal

摘要

PROBLEM TO BE SOLVED: To improve users' convenience by easily and reliably establishing a session between a second communication terminal and a first communication terminal while securing the discrimination, uniqueness, and validation of the first communication terminal.;SOLUTION: The first communication terminal 110 transmits registration information 248 including first address information and first destination information to a session server 120. The session server generates an authentication code, and uses the first destination information to transfer the authentication code. The first communication terminal transmits expansion registration information 264 where the authentication code that has been transferred from the session server is added to the registration information to the session server. The session server authenticates the expansion registration information, correlates the first address information to the first destination information for registration, and then transmits the first address information to the second communication terminal based on the first destination information when the second communication terminal 130 requests the acquisition of the first address information.;COPYRIGHT: (C)2011,JPO&INPIT