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.
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- 高速數字用戶(hù)線(xiàn)（HDSL）技術(shù)利用現有的用戶(hù)雙絞銅線(xiàn)作媒介傳輸E1速率信號，是把高速數字業(yè)務(wù)接入到電信網(wǎng)的一種經(jīng)濟有效的解決方法。
