Digital subscriber's line transmission manner, utilizing the xDSL device and

摘要

Solve the problems, such as: with provide Digital Subscriber Line Transmission system can countermeasure TCM crosstalks by the hardware of modification partial software using modular system too big variation without reason, modular system. ;SOLUTION: in digital subscriber transmission method for executing training DMT (Discrete multi-tone) symbols and a phone for high-speed data communication lines, the pressure of the signaling point of whose 4-value qam symbol is different, and the symbol of 400 Hz of stage TCM is sent for notifying to other side. ;COPYRIGHT:(C) 2004, JPO