The implementation of the high bit rate digital subscriber line (HDSL)dynode systems is discussed, the design scheme of practice systems, and practice test data are given, come recommendation for HDSL technique is proposed.

• 对超级数字用户线路倍增系统的实现进行了讨论，给出了一个实际实现系统的设计方案及其实测数据，对利用高比特率数字用户线（HDSL）技术提出了一些建议。