DATA COMMUNICATION SYSTEM SUITED FOR TRANSMITTING AND RECEIVING DATA AMONG A PLURALITY OF DATA COMMUNICATION APPARATUSES CONNECTED TO A NETWORK, DATA TRANSMISSION APPARATUS CONSTITUTING SUCH SYSTEM, AND TRANSMISSION DESTINATION UPDATE METHOD AND TRANSMISSION DESTINATION UPDATE PROGRAM EXECUTED BY SUCH DATA TRANSMISSION APPARATUS

摘要

In order to allow the communication method for receiving data to be set at the side receiving the data, among a plurality of data communication apparatuses, a data transmission apparatus includes a destination designation portion for accepting designation of user identification information, a data accepting portion for accepting data, a data transmission portion for transmitting the data based on a communication method and destination information stored in association with the user identification information, a comparing portion for comparing the communication method stored in association with user identification information included in reply data with a communication method by which the reply data was received when the reply data for the transmitted data is received, and an update portion for updating the communication method and the destination information stored in association with the user identification information included in the reply data with the communication method by which the reply data was received and with the destination information included in the reply data based on the result of a comparison.