DATA COMMUNICATION APPARATUS, DATA PROCESSING METHOD OF THE SAME, COMPUTER PROGRAM OF THE SAME, AND NETWORK SYSTEM

摘要

PROBLEM TO BE SOLVED: To enable data communication freely customized by a user in an NGN network.

SOLUTION: A user terminal apparatus 100 transmits a start request of session, receives a response message including an SDP information from a second terminal in response to transmission of the start request, extracts a regular IP address of the second terminal from the received SDP information, relates the extracted regular IP address to a virtual IP address stored in advance and stores it, establishes session between the user terminal apparatus and the second terminal using the related virtual IP address and the regular IP address, accepts packet data including the virtual IP address from a media application in a state that the session is established, converts the virtual IP address included in the accepted packet data to the corresponding regular IP address, and transmits the packet data including the regular IP address to the second terminal in the established session.

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