A portable terminal accesses an information center by using an address acquired from vehicular apparatus, requests for transmission of dedicated application operable in OS of the portable terminal, and receives the application from the information center. The dedicated application executed by the portable terminal permits the portable terminal to (i) transmit specific information specifying model of the portable terminal to the information center, (ii) receive, in response, data for matching operations between the vehicular apparatus and the portable terminal, (iii) transmit the received data to the vehicular apparatus, and (iv) receive, in response, an instruction transmitted by the vehicular apparatus, the instruction implementing a function of the portable terminal.