The present invention relates to a particular device, the message transmitting and receiving systems under unified IP messaging system , the message sender or the message receiver one user device by a number specifying the particular implementation of the device of the recipient to receive the message so that it can receive a message through a particular of the device ( the mobile communication terminal , PDA , etc.) to a specific device in a converged IP messaging system environment using is to allow for the receiver to receive the message through .
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