HDSL represents a major breakthrough in loop circuits of limited distance, capcable of high speed transmission on copper facilities.
高比特率数字用户线（HDSL）是对在现有铜线对上进行高速、短距离通信的重大突破。
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。
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。
HDSL is a symmetric version of ADSL (meaning data travels at the same speed in each direction) that is primarily oriented toward business applications.
hdsl是对称型的adsl(就是说数据在双向上以同一速度传输)这主要是面向商业应用。
HDSL is a new high-speed data transport technology realized over twisted-pair wires and is known as "copper optical fiber."
高比特数字用户环路(HDSL)技术是一种新的在双绞铜线上实现高速数据传输技术，有“铜光纤”之称。
HDSL is a new high-speed data transport technology realized over twisted-pair wires and is known as "copper optical fiber."
高比特数字用户环路(HDSL)技术是一种新的在双绞铜线上实现高速数据传输技术，有“铜光纤”之称。
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