HDSL is a new technology provided broadband service for user by using copper twisted pair of telephone network. HDSL system architecture , frame format and way of implementation are described as well as a practical scheme of design is given in this paper.

• HDSL是利用现有电话网的铜双绞线为用户提供宽带业务的一种新技术，本文介绍了HDSL的系统构成、帧格式以及线路编码，并且给出了一种实用的设计方案。