ADSL 技术是于1989年由贝尔通信研究所提出的标准化调制解调传输技术。该技术可在普通电话线上将现有电话线路的频宽经由调制解调技术处理后扩大,其中较高容量的部分用来将大量的资料传送到用户端,而用户端经由网络回送信号时,则使用较慢的速率来处理,从而实现高速的数据和语音同传。ADSL 的优势ADSL 技术主要具有以下优越性:它永远处于在线状 ADSL technology was standardized modulation and demodulation transmission technology put forward by Bell Communication Research Institute in 1989. The technology expands the bandwidth of existing telephone lines over modem telephone lines over conventional telephone lines, where the higher capacity part is used to send a large amount of data to the client and the client sends back signals over the network , Then use a slower rate to deal with, in order to achieve high-speed data and voice simultaneous interpretation. Advantages of ADSL ADSL technology mainly has the following advantages: It is always online