An EV-DO terminal module is made up of hardware and software for implementing the function as an EV-DO terminal. A W-LAN terminal module is made up of hardware and software for implementing the function as an AP of W-LAN. An information exchange terminal module has a function equal to that of the W-LAN terminal module. A control module has a dialup function and a function based on PPP protocol and is a hardware and software module for controlling the EV-DO terminal module, the information exchange terminal module, and the W-LAN terminal module.