程控电话交换机

程控电话交换机用PTC过流保护器的研究

Study of PTC over current protector for program - controlled switchboard

PDS系列电力调度程控电话交换机的设计

Design of type PDS program controlled telephone exchanger for power system dispatching

对程控电话交换机的控制方式进行了深入的讨论，并针对5ESS＿2000和Linea交换机的控制系统进行了分析。

This article discusses the control modes for digital SPC exchanges , and analyses the control systems for 5ESS_2000 and Linea exchanges .

介绍S1240程控电话交换机在应用程序软件升级中，对操作系统的支持和补充。

This article introduces the complement for the operation system through application software program updating in the S1240 SPC Telephone Exchange .

SSU-12型程控电话交换机自动计费系统的设计

The Design of Automatic Message Accounting System of Program Control Telephone Exchange SSU-12

1696程控电话交换机微机计费系统

Micro-computer Calculate Cost System for Program Control Telephone Switchboard of 1696 Type

以程控电话交换机组成数据通信网

A data network formed by program controlled telephone exchangers

两种程控电话交换机的控制方式

Two Control Modes for Digital SPC Exchanges

用户程控电话交换机通用计费程序的设计替代用户交换机的解决方案，如交换器；

Development of Phone Accounting System for PBX ; solutions , such as switches , that replace PBXes ;

本文研究程控数字电话交换机中用户集中器时分接线器（LTSW）的多故障检测。

In this paper , multiple fault detection of line concentrator time switch in SPC switching system is discussed .

GB/T15542-1993数字程控自动电话交换机技术要求

Technical requirements of digital SPC automatic telephone exchange

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。

The development trends of integrated circuits used in SPC telephone switching systems , system architecture , features and requirements of the switching systems are discussed .

北京邮电学院于1979年研制成了100门程控电视电话交换机的性能样机，该机的硬件和软件结构都比较简单，主要作为教学模型用。

In 1979 a characteristic model machine of 100 line SPC picturephone exchange was developed in Beijing Institute of Posts and Telecommunications . The structure of its hardware and software are all rather simple . It is mainly used as a teaching model .

程控数字电话交换机诞生后，开始有了呼叫等待、呼叫转移之类新的业务功能。这些业务功能可以认为是早期的智能化业务。

After the birth of program-controlled digital telephone exchange , telephone began to have the new class of business functions , such as " call waiting " and " call transfer " . These new functions were considered to be the early intelligent business .

GB/T14716-1993程控模拟用户自动电话交换机通用技术条件

Generic specification for stored program control analogue private automatic branch telephone exchange system