COMMUNICATION SYSTEM, COMMUNICATION OPTIMIZING APPARATUS AND COMMUNICATION NETWORK ESTABLISHING METHOD USED IN THEM

摘要

A communication system in which the user can perform communication via a network, without installing any dedicated applications or performing any special settings to his or her terminal. The communication system has a communication optimizing apparatus 4 that performs, when a user terminal (PC terminal 3-1, 3-2) accesses a server (Web server 1) via an access-controlled network (network of carrier B), settings and processes required for obtaining a permission of using the network. The communication optimizing apparatus 4 automatically performs the processes required when the network is used. In this way, the user can perform communication using the network.