The interface between data circuit terminating equipment and data terminal equipment 15 - pin interface 数据电路端接设备与数据终端设备间的接口15插针接口
The interface between data circuit terminating equipment and data terminal equipment 25 - pin interface 数据电路端接设备与数据终端设备间的接口25插针接口
The interface between data circuit terminating equipment and data terminal equipment 37 9 - pin interface 数据电路端接设备与数据终端设备间的接口37 9插针接口
Test methods for surge protectors used in low - voltage data , communications , and signalling circuits 低压数据电路通信电路和信号传输电路用电涌保护器件的试验方法
A 48 56 64 kbit s data circuit termination equipment standardized for use on digital point - to - point leased circuits 点对点数字租用电路上使用的48 56 64kbit s数据电路终接设备技术要求
Signal quality at interface between data terminal equipment and synchronous data circuit - terminating equipment for serial data transmission 串行数据传输用数据终端设备和同步数据电路终接设备之间接口的信号质量
Data circuit and data service unit （ dsu ） are provided and maintained by cht while the customer premises equipment ( cpe ) is provided and maintained by the customer 四、数据电路暨数位数据机（ dsu ）由本公司供租与维护。用户终端设备（ cpe ）由用户自备与维护。
Integrated services digital network isdn - signalling system no . 7 ; isdn user part isup version 3 for the international interface - part 14 : explicit call transfer supplementary service 基本型控制规程主要适用于网络中数据终设备dte数据电路终接设备dce或dte dte这间的通信。
In case that the lease period is less than one ( 1 ) year , no matter whether at the request of the customer , or as a result of default in payment or violation of law , the customer shall be liable to cht for 35 % of the monthly rentals of port and pvc cir for the remaining period , in addition to the monthly rentals of domestic leased data circuit and dsu for the remaining minimum lease period in accordance with the leased circuit service regulations 九、用户租用本业务不满一年即行拆机，不论是用户申请退租、欠费，或违反法令而终止租用，其数据电路暨数位数据机月租费按国内数据电路契约条款有关规定计收未满期间之租费，而通信埠暨固定通信之约定资讯速率月租费则按每月应缴费用总额百分之三十五计收自停租日起至租用后满一年期间之各月租费。
Information technology - international standardized profile ra - relaying the connectionless - mode network service - definition of profile ra51 . 1121 , relaying the connectionless - mode network service between csma cd lan subnetworks and psdns using virtual calls over a digital data circuit csdn leased line permanent access 信息技术.国际标准华轮廓ra .转接无连接方式的网络服务.第9部分: ra51 . 1121轮廓的定义.数字数据电路csdn租用的线路固定访问的虚拟呼叫转接csma cd lan子网与psdns间的无连接方式的网络服务
