A system includes a server and an information terminal apparatus that can be locally connected to a cellular phone terminal, which can be connected to the server via a cellular phone communication network. With such a system, when the server receives a request to remotely control the information terminal apparatus, the server verifies the validity of the request. When the request is valid, the server establishes a connection to the cellular phone terminal, and transmits, via the cellular phone terminal, a packet which is an instruction to start up the information terminal apparatus. Upon receiving the start-up instruction packet transmitted from the server, the information terminal apparatus starts up and establishes a connection to the server.