COMMUNICATION SYSTEM, MOBILE TERMINAL, INFORMATION TERMINAL, COMMUNICATION METHOD, AND PROGRAM

摘要

[PROBLEMS] To provide a communication system capable of switching a terminals for making a call between a call by a mobile telephone network and a call via the Internet. [MEANS FOR SOLVING PROBLEMS] A mobile terminal ((A)1-1) is connected to a router (3) via the radio LAN function and connected to a personal computer ((A)2-1) and the Internet network (100) via the router (3). The mobile terminal ((A)1-1) is connected to a mobile terminal ((B)1-2) via a mobile telephone network (200) by a radio modem. The personal computer ((A)2-1) has a function for performing the Internet telephone via the Internet network (100) and is radio LAN-connected to the mobile terminal ((A)1-1) via the router (3). The personal computer ((A)2-1) controls the mobile terminal ((A)1-1) which is radio LAN-connected via the router (3) so as to perform call and arrival of the Internet telephone and voice communication via the mobile terminal ((A)1-1).