Semielectronic telephone switching system 半电子制电话交换机
Toll and local crossbar telephone switching system& Signal marks or colours of lamp and alarm ringer GB/T2094-1980纵横制长、市话交换设备灯色及警铃信号标志
If not, the call went to the company's in-house telephone switching system, or PBX ( private branch exchange). 如果没有,电话就转到公司内的电话交换系统(即PBX,用户电话交换机)。
Tracking of the Clones in AXE-10 Mobile Telephone Switching System TACS制AXE&10移动电话交换系统对并机的侦测、跟踪与防治
Presently, the algorithm has been successfully implemented in the large-scale SPC telephone switching system DS-30 developed by China. 该算法已经在一台国产大型程控数字交换机DS-30上实现。
CDMA Cordless Telephone Switching System CDMA数字无绳用户交换系统
Recently the communication network faces some new threats. Attacks to the telephone network mainly aim at user terminal device, switching device, database, network management system, signaling system and transmitting device. 近来通信领域出现了一些新的安全威胁对电话网的攻击主要有针对用户终端设备、交换设备、数据库、网管系统、信令系统和传输设备的攻击;
In order to renovate and upgrade the traditional telephone dispatching communication system based on circuit switching an electric power dispatching system based on VoIP is put forward and its implementation is proposed. Moreover, the structural principle and its main components are presented. 为了对传统的基于电路交换的电话调度通信系统进行升级改造,提出了一种基于IP电话(VoIP)技术的电力IP调度通信系统,介绍了该系统的工作原理及主要部件的实现方案。
The development trends of integrated circuits used in SPC telephone switching systems, system architecture, features and requirements of the switching systems are discussed. 本文对程控数字电话交换机所用的集成电路器件,交换机的系统结构以及性能要求的发展趋势进行了讨论。
This paper states the first opened digital railway division communication system which is constructed with Δ M multiplex transmission system and digital division telephone switching system on the toll symetrical cable at Zhengzhou-Luoyang Railway Division. 本文介绍了在郑州&洛阳区段的长途对称电缆上开通的我国铁路第一个数字式区段通信系统,它由△M多路复用传输系统和数字式区段电话交换系统构成。
This paper presents a basic method for establishing the simulation models of a telephone switching system by using GPSS-F simulation language. 本文介绍一种应用GPSS-F仿真语言建立一个电话交换系统仿真模型的基本方法。