| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete training method in an ADSL(asymmetric digital subscriber line) transceiver at adopting of the effective transmission technique of ADSL signals under a noise environment from TCM-ISDN or a digital subscriber line transmission system, which is provided with a means for executing such a training method and communication equipment used for it. SOLUTION: This digital subscriber line transmission system in which telephone line is a transmission line is provided with a training means for performing initialization by a single bit map when channel analysis is performed excluding transceiver training, exchange, C medley and R medley and checking line quality by both an inside symbol and an outside symbol when it is a dual bit map and by only the inside symbol, when it is a signal bit map in the case of performing the channel analysis of only the C medley and the R medley.
|
