| 摘要 |
PROBLEM TO BE SOLVED: To terminate a start-up session in the end, according to a duplex method (fully duplex method or semi-duplex method, for example). SOLUTION: The method and system enabling data communication, by which the type of duplex method in use (fully duplex method or semi-duplex method, for example), are detected, and a terminal on the other side is notified. Test of conditions, performance and the like of a central office system 2, a remote system 4 and a communication channel 5 and negotiation is performed between a test negotiation block 46 of the central office system 2 and a test negotiation block 48 of the remote system 4, and an appropriate communication standard is selected based on the quality of the communication and the performance of the channel 5. COPYRIGHT: (C)2004,JPO
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