A portable terminal includes an access request receiving section for receiving an access request for accessing an IP push server via a communication apparatus which is installed as an external device at the portable terminal, wherein the access request is sent from an SMS server which is requested by the IP push server to send the access request; a commanding section for commanding the communication apparatus to hold power supplied to the communication apparatus after a communication port allocated to the communication apparatus is disconnected, in accordance with the reception of the access request; a communication port disconnecting section for once disconnecting the communication port in accordance with the reception of the access request; and an accessing section for accessing the IP push server by dial-up connection using the communication apparatus.