HDSL
高速数字用户线路（High Speed Digital Subscriber Line）
例句
One drawback to HDSL is that it takes two circuits.
HDSL的一个缺陷是占用一对电路。
POTS requires a special modulation and conversion schemes with HDSL, unlike other XDSL variations.
与其它的XDSL变型不一样，用HDSL时，POTS需要特殊的调制和转换方案。
The technique USES 16level TCPAM, and has obvious technical advantages compared with ADSL and HDSL.
该技术采用16电平tcpam，与ADSL, HDSL技术相比具有明显的技术优势。
