数字用户线路 DSL ; Digital Subscriber Line ; XDSL ; D
数字用户线 DSL ; Digital Subscriber Line ; XDSL ; Ethernet Digital Subscriber Line
非对称数字用户线路 asymmetric digital subscriber line ; ADSL
非对称数字用户线 ADSL ; asymmetric digital subscriber line ; ADSLAsynchronous Digital Subscriber Line ; Digital Subscriber Line
不对称数字用户线 ADSL ; asymmetric digital subscriber line ; asymmetrical digital subscriber line ; ADSL-asymmetrical digital subscriber line
高速数字用户线 HDSL ; high speed digital subscriber line ; High-data-rata Digital Subscriber Line ; Very Digital Subscriber Line
甚高速数字用户线 VDSL ; Very-high-speed Digital Subscriber Line ; Veryhigerate DSL ; Very Digital Subscriber Line
数字用户线接入复用器 DSLAM ; digital subscriber line access multiplexer ; dsl access multiplexer
高比特率数字用户线 HDSL ; High-Bit-Rate Digital Subscriber Line HDSL ; high rate digital subscriber line ; High-data-rate Digital Subscriber Line
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介绍一种新型的程控交换机用户线测试系统。
A new kind of subscriber line testing system for SPC exchanges is introduced.
模拟用户线接口电路是数字程控交换系统的重要组成部分。
Subscriber line interface circuit is an important part of digital program-controlled switching system.
非对称数字用户线，是众多DSL 技术中的一种，并且是最常用的一种。
One of a number of DSL technologies, and the most common one.
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