switched telephone network

This application report describes and characterizes secure communication systems over the Public Switched Telephone Network ( PSTN).

介绍了一种用DSP设计的基于公用电话交换网络（PSTN）的安全通信系统，整个方案主要用于保证语音、数据和传真等三种通信的安全。

互联网摘选

It is popular to provide various infomation service on an intelligence terminal by the PSTN ( Public Switched Telephone Network).

利用PSTN固定电话网为用户提供多样化的信息服务，是当前的一个研究热点。

互联网摘选

A telephone alarm device is designed with the Public Switched Telephone Network as a medium.

设计了一种利用公共通信网作媒介的电话自动报警器。

互联网摘选

This Recommendation describes a high-speed terminal access to videotex services for use on the Public Switched Telephone Network ( PSTN).

本建议描述用于公众电话交换网（PSTN）的可视图文业务的高速终端接入能力。

互联网摘选

According to the widely dispersive water monitoring sites, a remote distributed monitoring system of water parameters is designed based on public switched telephone network.

针对环境水域分布广、地势复杂、监测分散的特点，设计了一种基于公共电话网的分布式远程水域质量监测系统。

互联网摘选

USA phone Number A USA phone number is a numeric identifier used to call from one to another in a public switched telephone network.

USA电话号码USA电话号码是一个数字标识符，在公共转换电话网中一个人呼叫另一个人时使用。

互联网摘选

As voice communications is the primary media of communication for human being, it plays a very important role from public switched telephone network to the third generation mobile communications.

话音是人与人之间交流的主要方式，从最早出现公共交换电话网络到现在的第三代移动通信，语音通信是其最基本的功能。

互联网摘选

An Integrated Services Digital Network device on a public switched telephone network.

公用交换电话网上的综合业务数字网设备。

互联网摘选

This algorithm can be applied in video communication of Public Switched Telephone Network ( PSTN), Internet or mobile channel.

这种算法可应用于公共交换电话网（PSTN），Internet或移动信道的视频通信。

互联网摘选

To be successful, Internet faxing must provide reliability and performance equal to or better than traditional public switched telephone network faxing.

为了获得成功，因特网传真必须提供与传统的公共交换电话网传真相同、甚至更好的可靠性和性能。

互联网摘选