The present invention relates to a Universal Serial Bus (USB) storage device having IP telephone capable of originating/receiving a call and providing on-line content. A USB connector (61) and USB memory (63) are installed in a housing (62) . A unique phone number belonging to the USB storage device and a content program, used to automatically connect to the server of an ITSP, are stored in the USB memory (63) . The USB storage device includes call origination/reception means enabling Internet telephony, and alarm means for sounding an alarm to recognize an incoming call. When inserted into a USB port of a computer, the USB storage device is automatically connected to the server, and a telephone number is input on a monitor, thus enabling call origination and call reception.
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