1·High - speed Digital Subscriber Line?
高速数字用户线HDSL ？
2·Rate Adaptive Digital Subscriber Line?
速率自适应数字用户线RASDL ？
3·A new kind of subscriber line testing system for SPC exchanges is introduced.
介绍一种新型的程控交换机用户线测试系统。
4·Product type POTS splitter. System application asymmetric digital subscriber line.
产品类型POTS分离器。系统的应用，非对称数字用户线路。
5·The initialization module is used for initializing the subscriber line interface controller.
初始化控制模块用于初始化用户线路接口控制器。
6·Very-high-speed digital subscriber line(VDSL) is the fastest access technology of the xDSL family.
甚高速数字用户线（VDSL）是数字用户线（DSL）家族中速率最高的接入方式。
7·Subscriber line interface circuit is an important part of digital program-controlled switching system.
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。
8·Presently, Asymmetric Digital Subscriber Line (ADSL) wideband technique is paid attention to extremely.
目前，非对称数字用户环路ADSL宽带技术倍受关注。
9·Line coding is an important step in the design of full-duplex transmission system to support ISDN subscriber line basic access.
在ISDN用户线基本接入全双工传输系统的设计中，线路编码是重要的一步。
10·Asymmetric digital subscriber line (ADSL) is a technology that provides broadband service for users on the existing twisted pair line.
非对称数字用户线(ADSL)是利用现有电话网的铜双绞线为用户提供宽带业务的一种新技术。