摘要
高速数字用户线（HDSL）技术利用现有的用户双绞铜线作媒介传输E1速率信号，是把高速数字业务接入到电信网的一种经济有效的解决方法。本文介绍了HDSL技术在应用中应考虑的几个问题，包括对HDSL设备传输码型的选择、线对数量、误码率选定、传输媒体和传输距离要求等。
HDSL access technology can transmit E1 signal over existing subscriber Copper twist pair lines, it is an economical and effective solution for high bit rate digital services to access into telecommunication networks. In this paper, some of its applicable conditions are discussed, including: transmission code selection of HDSL equipment, number of line pairs, bit error rate, transmission media and transmission distance etc.
