PSTN signaling USES tones generated by the phone to begin or end a call.

PSTN信令通过使用手机产生的声调来开始或结束通话。

This paper introduces the method to implement the remote networking with PSTN.

介绍了使用PSTN实现远程联网的方法。

The remote diagnosis system uses the PSTN to transmit data based on the Fax theory.

通信原理，利用公用电话网PSTN实现数据传输。

Still im-age is at first compressed by using JPEG algorithm, and then transfered via PSTN.

图像经JPEG压缩后通过公众电话网进行远程传输。

There are many different kinds of PSTN signaling, including signaling between local exchanges.

有许多不同种类的PSTN信令，包括在本地交换之间信号。

The communication infrastructure of the system is based on the available phone lines and PSTN.

系统的通讯机制是基于现存的电话线和PSTN。

And because of the openness of VoIP, the effect of spam in VoIP will be greater than it in PSTN.

而由于网路的开放性，垃圾网路电话影响将比在传统电话来得大。

Media gateway is used to encode and decode voice steam and connect PSTN network to the IP network.

利用媒体网关进行语音流的编解码，确保PSTN网和IP网络间的互通性；

Bluetooth telephone system is a mobile communication system based on Bluetooth technology and PSTN.

蓝牙电话系统是基于蓝牙技术和现有固定电话网络的一种移动通信系统。

Following is an overview of how the analog PSTN implements signaling and media transport operations.

以下是如何实现的模拟PSTN信令和媒体传输操作的概述。

This system is applied in not only PSTN but also non-security system based on circuit switched networks.

该系统不仅可用于PSTN，也可用于其它和PSTN类似的基于电路交换和网络本身没有保密的系统。

The vIPer, with PSTN Connect, will be submitted for NSA certification testing in the third-quarter of 2008.

能够提供PSTN连接的vIPer电话，将在今年的3季度进行NSA认证测试。

SCTP is designed to transport PSTN signalling messages over IP networks, but is capable of broader applications.

SCTP设计用于在IP网络上传输PSTN信令，但它可以有更广阔的用途。

The number of lines and traffic of the Public Switched Telephone network (PSTN) network have also been decreasing.

公共电话交换网(PSTN)的线路和流量也在减少。

The function, formation and workflow of the PSTN based intelligent fee collecting management system is introduced.

介绍了一种基于PSTN的智能收费管理系统的功能、组成和工作流程。

The automatic remote centralized meter reading system based on PSTN was introduced, and its constitution was given.

介绍了基于PSTN通信的自动远程集中抄表系统及其结构。

This paper introduces the software and hardware of a remote image acquisition and transmission system based on PSTN.

介绍了一种基于PSTN的远程图象采集和传输系统的软件和硬件电路。

Conventional PSTN network can provide excellent voice-service quality, but it can't easily support new data service.

传统的PSTN网络，虽然能够提供优良的服务品质，但对新业务的支持却显得力不从心。

This system regards PSTN as communication channels and realizes data long-distance transmitting, saving and processing.

本系统以公用电话网作为通信信道，实现水情数据的远距离传输、存储和处理。

It offers kinds of information services to users on basis of the PSTN, including information inquiry and short message.

固网短信是利用现有的固定电话网，向固定电话用户提供多种信息服务，目前主要包括信息查询和短消息两大类。

Based on the analysis of the difference between Softswitch and PSTN, this paper introduced a traffic model of Softswitch.

分析了软交换与PSTN在话务特性上的区别，建立了软交换的话务模型。

The system can be divided by function into three parts: image collection, DSP image compressing and image transmitting in PSTN.

本系统从功能上分为图像采集、DSP图像压缩以及PSTN图像传输三部分。

PSTN (Public Switch Telephone Net) short message, which is recently introduced by China Telecom, is a non-voice value-added service.

固话短信是中国电信新近推出的一项基于固定电话网的非话音类增值业务。

Up to now, PSTN providers have invested a lot of costs in building and maintaining their bone networks and subscribers cycle circuit.

到目前为止，世界范围内的PSTN供应商已经投入了巨大的成本，包括建设、维护骨干网和用户环路。

Introduces a remote monitoring-measuring system used for environmental protection based upon PSTN (Public Switched Telephone Networks).

介绍了基于PSTN(公共程控交换电话网络)的环保远程监测系统。

RAS is a network access server based on PHS and locates between PSTN and IP network. It realizes the functions of data communication with PHS.

RAS是基于PHS系统的网络接入服务器，位于PSTN网和IP网之间，它实现了使用PHS进行数据通信的功能。

This paper presents a remote video monitoring system based on PSTN, it can carry real-time video, audio and all kinds of monitoring parameters.

介绍了一种基于公共交换电话网（PSTN）的远程视频监控系统，它能通过PSTN实时传送现场的图像、声音及各种监控参数。

Now we have researched and developed a distributed computer monitoring system based on PSTN for heating power stations in this graduate program.

本课题针对热力站管理运行特点，研制成功基于PSTN公用电话网的分布式计算机远程监测系统。

To make a good use of resource of the PSTN telephony lines, to complete various functions of data collection and transmission is also presented.

论述采用PSTN电话网，建立“虚拟”多点数据监测的依据和实现方法，实现利用既有PSTN电话网络和线路资源，完成多种信息采集、传送功能。