摘要
数字用户环路传输技术从８０年代基于ＩＳＤＮ基本速率的数字用户线（ＤＳＩ）技术到９０年代的高比特率数字用户线（ＨＤＳＬ）和不对称数字用户线（ＡＤＳＬ）技术，发展非常迅速，应用也愈来愈广。本文首先概述了ＤＳＬ传输技术，然后重点论述了ＨＤＳＬ和ＡＤＳＬ的最新发展，关键技术及其主要应用。
From digital subscriber line(DSL)based on the ISDN basic rate in the 1980’s to high bit ratedigital subscriber line(HDSL)and asymmetrical digital subscriber line(ADS) in the 1990’s, the transmis-sion technology on the digital subscriber loop has developed rapidly and has been used widely. In this paper,the DSL technology is first described briefly,and then the new development,the key techniques and the mainapplications of HDSL and ADSL are presented respectively.
出处
《电信科学》
北大核心
1995年第10期47-52,共6页
Telecommunications Science
关键词
数字用户线
高比特率
不对称
用户环路
digital subscriber line,high bit rate digital subscriber line,asymmerrical digital subscriber line,subscriber loop
