| 摘要 |
The time required for data communication equipment to make communication handshaking is reduced by executing a pre-communication procedure based on p re- stored communication parameters. To be concrete, the modulation mode, communication protocol, MODEM parameters, optimum MODEM training time, etc., set through four communication channels; a communication channel for selecti ng a modulation mode, communication channel for probing a line, communication channel for training MODEM, and communication channel for setting MODEM parameters are stored at every destination communication equipment and the subsequent communication is performed based on the stored information.</SDOA B>
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