ADSL is a branch of DSL technology, but also the use of ordinary telephone lines to transmit data, but it is used in highfrequencyband than the voice.
ADSL是DSL技术的一个分支，同样也是使用普通电话线路来传输数据，但它使用的频率要比语音波段高。
2
ADSL USES the highfrequencyband which has not been used in the common telephone line and the advanced modulating technique to provide broadband access.
ADSL利用了普通电话线中未使用的高频频段，采用先进的调制技术，提供宽带接入。
3
At highfrequencyband, the frequency response error of a peak detector is the high frequency resonance error mainly produced by the distributive parameter.