High performance PTC ceramic material with low resistivity is desired to prepare an over-current limiter for program-controlled telephone exchanger.
程控电话交换机过电流保护元件要求用低电阻率高性能的ＰＴＣ陶瓷材料来制备。
PTC element as over-current limiter for program-controlled telephone exchanger is one of the important application of PTC ceramic material.
程控电话交换机过电流保护元件是ＰＴＣ陶瓷材料的主要应用之一。
This paper describes the characteristics and practical sense of the remote measurement and control using telephone, and a multi-channel device for remote measurement and control using telephone is designed.
根据电话远程测控的特点与实际意义,设计了一种基于AT89S52的多路电话远程测控装置。
In the light of the problem of time synchronization of SPC telephone exchanges in Tianjin local fixed telephone network,the paper introduces the concept of time synchronization and feasibility design project of using Tianjin local telephone network management system to realise time synchronization in SPC telephone exchanges,and as well as the developed result of the system.
针对天津本地固话网出现的程控电话交换机时间不同步的问题,介绍了时间同步有关的概念和利用天津本地固话网管系统实现程控电话交换机时间同步的可行性与设计方案,以及系统开发的结果等。
The paper introduces various identification methods for tracing the malicious call and calling identification services in SPC telephone exchanges, especially describes the malicious call trace methods by using switch boards and “R” Key tandem function and telephone set which can display calling subscriber’s numbers.
介绍了程控电话交换机追查恶意呼叫和主叫用户信息识别业务的各种识别方法 ,特别是详细介绍了利用话务台和话机上的“R”键转接的功能 ,以及利用能显示主叫信息的话机来显示主叫电话号码和追查恶意呼叫电话的方法。
The modern communication facilities as programmed-control telephone, mobile phone and high-speed broadband are completely available.
程控电话、动电话、速宽带网等现代通讯设施齐备。
Application of Telephone Fee-counted System by VB 6.0;
用VB6.0开发程控电话计费系统
Code for design of railway SPC digital switching engineering
铁路时分数字程控电话交换工程设计规范
Development of Phone Accounting System for PBX;
用户程控电话交换机通用计费程序的设计
The total capacity of program-controlled telephones has reached more than 770,000 sets and one in every ten people has a mobile phone on average.
程控电话总容量达七十七万多门，移动电话平均每十人一部。
Some programmable phones can now memorize up to 100 numbers(Time)
有些程控电话现在能存储将近一百个号码(时代)
Some programmaBle phones can now memorize up to 100 numBers
有些程控电话现在能存储将近一百个号码
Everywhere there are program-controlled telephone booths (2 thousand), information stations (700);
建成了2000门程控电话交换站，700多个信息点；
Love is a telephone which is seldom program-controlled or directly dialed.
爱情这部电话机通常不是程控直拨的。
Supervise telecom exchanger& desk phone installation.
监督程控交换机和桌上电话的安装.
SPC digital toll exchange
程控数字长途电话交换机
Wire and Wireless Remote System Based on Telephone
利用电话的“有线+无线”远程遥控系统
Telephone Remote Control System Based on DTMF;
基于DTMF的智能电话远程控制系统
Methods of Identifying Telephone Signal in Remote - control System;
远程控制系统中电话信号音识别方法
The Real-time Calculable System among Long-range Telephone on Computer and Exchange;
微机与程控交换机实现远程多门电话实时计费
The Remote Monitor and Control System of Elevator Equipment Based on the Switched Telephone Network;
基于电话网络的电梯设备远程监控系统
Remote-Controlled Household Appliances Based on PTN (Public Telephone Network);
基于公用电话网络的远程遥控家电设备
Design of Telephone Remote Household-Appliances Control System Based on RTX51 Tiny
基于RTX51 Tiny的电话远程家电控制系统设计