您要查找的是不是：
- optical synchronous digital network 光同步数字网络
- semi synchronous digital network 半同步数字网
- G.823 The Control of Jitter and Wangder Within Digital Networks Which are Based on the Synchronous Digital Hierarchy(SDH)[S]. 陆军;黄进.;电力通信同步网的规划与建设[J]
- synchronized digital network 同步数字网
- CCIS occurs over a separate packet switched digital network. 独立的分组交换数字网络中使用CCIS。
- So B-ISDN (Broad Integrated Service Digital Network) comes into being. 于是产生了B-ISDN (宽带综合业务数字网)技术。
- synchronous digital network 同步数字网
- The asynchronous transfer mode (ATM) is the transfer mode recommended for the broad integrated service digital network (B-ISDN) by ITU-T. 异步传输模式ATM是国际电信联盟建议用于宽带综合业务数字网(B-ISDN)的传输模式。
- ATM is one of the key techniques for implementing Broadband Integrated Services Digital Network(B-ISDN). ATM是实现宽带综合业务数字网（B－ISDN）的关键技术之一。
- This Recommendation provides an information model for the Performance Monitoring of Synchronous Digital hierarchy (SDH) Network. 本建议给出了同步数字系列(SDH)网络的性能监视信息模型。
- According to the trend of digital network,the "U" interface technology of ISDN and ADPCM technology is adopted. 配合数字化网络趋势 ,该系统采用了 ISDN的“U”接口传输技术和 ADPCM编译码技术。
- Digital networks are considerably less subjected to noise than analog networks. 数字网络不象模拟网络那样易受噪音干扰。
- Which encapsulation methods are most commonly used with dialup integrated services Digital Network (ISDN)? 在一线通中一般使用哪两种数据封装方式?
- Digital network environment makes fair use of libraries confronting with difficulty. 摘要数字网络环境使图书馆合理使用面临困境。
- This Recommendation addresses management aspects of the synchronous digital hierarchy (SDH), including the control and monitoring functions relevant to SDH network elements (NE). 本建议论述同步数字系列(SDH)管理方面的情况，包括与SDH网络元(NE)相关的控制和检测功能。
- Stream media technology is used to transmit multi-media information on the digital network. 摘要流媒体技术是一种在数据网络上传递多媒体信息的技术。
- Also known as GSM1800 or PCN, this digital network operates in Europe and Asia Pacific. 也称作GSM 1800 或PCN，该数字网络在欧洲和亚太地区使用。
- According to the trend of digital network，the "U" interface technology of ISDN and ADPCM technology is adopted. 配合数字化网络趋势，该系统采用了ISDN的“U”接口传输技术和ADPCM编译码技术。
- AND Automatic Digital Network Dialing. A digital private line service that transmits voice, data, video and other digital signals. 自动数字网络拨号。一种数字私线服务,传输话音、数据、视频以及其他的数字信号。
- Hong Kong has eight public mobile radiotelephone service operators operating one analogue and 11 digital networks. 现时共有8家公共流动无线电话服务营办商营办一个模拟和11个数码系统。
