The ADSL technology, namely Asymmetric Digital Subscriber Line, is one kind of asymmetrical transmission technologies which realizes the high speed data transmission in the copper cable through the different modulation methods.

• ADSL技术，即不对称数字用户线(Asymmetric Digital Subscriber Line)，是一种非对称的传输技术，通过不同的调制方法在铜缆上实现高速数据传输。