在公用电话网(PSTN)上实现的交互式多媒体远程教学系统

提出了一种在 PSTN上实现的交互式多媒体远程教学系统，说明了系统的标准、构成及特点。     

NGN与PSTN业务分析比较

随着通信技术的快速发展和市场需求的变化,电信业务正由传统的语音业务向包括语音、数据、图像等综合性业务转变。传统电话网络业务过于单一,成为网络通信业务发展的瓶颈,通过分组网的过渡可以引入下一代网络,以两网(PSTN和NGN)的平滑演进驱动新兴增值业务。     

基于蓝牙的智能家庭网关设计与实现

家庭网关是整个智能家庭网路的核心,文章以ARM920T内核的微处理器AT91RM9200作为硬件平台,结合无线蓝牙通信技术,移植嵌入式操作系统μClinux,构建了一个完整的家庭网关的软硬件软件平台,实现了通过PSTN网对家用电器的远程控制。     

LoColms: an innovative approach of enhancing traditional classroom form of education by promoting web-based distance learning in the poorer countries

There have been numerous attempts recently to promote technology based education (Shrestha, 1997) in the poorer third world countries, but so far all these have not provided a sustainable solution as they are either centered and controlled from abroad and relying solely on foreign donors for their sustenance or they are not web-based, which make distribution problematic, and some are not affordable by most of the local population in these places. In this paper we discuss an application, the Local College Learning Management System (LoColms), which we are developing, that is both sustainable and economical to suit the situation in these countries. The application is a web-based system, and aims at improving the traditional form of education by empowering the local universities. Its economicability comes from the fact that it is supported by traditional communication technology, the public switching telephone network system, PSTN, which eliminates the need for packet switched or dedicated private virtual networks (PVN) usually required in similar situations. At a later stage, we shall incorporate ontology and paging tools to improve resource sharability and storage optimization in the Proxy Caches (ProCa) and LoColms servers. The system is based on the client/server paradigm and its infrastructure consists of the PSTN, ProCa, with the learning centers accessing the universities by means of point-to-point protocol (PPP).     

基于MSTP的下一代网技术

分析了下一代网（NGN）的体系结构及主要技术,探讨了下一代网的核心传输技术MSTP,并对下一代网的发展前景进行了分析。     

固网智能化建设方案

对现有的PSTN进行智能化改造是目前固网运营商为了满足用户的多种通信需求、提高服务质量的和自身综合竞争力所采取的一种主要技术手段.本文介绍了固网智能化的实现原理,并对固网智能化建设的基本思路和主要组网方式进行了分析.     

固网PSTN与软交换网络的互通分析

本文通过一个PSTN本地网与软交换的实际组网案例,简要说明了PSTN网与软交换网连接的方式,包括信令方式和中继方式。     

NGN技术在网络中的应用研究

下一代网络（Next Generation Network，简称NGN）是一种新兴的技术，它以软交换技术为核心，支持多业务的融合。本文阐述了NGN的特征，并以ASB的设备为例提出了整体的解决方案。     

基于PSTN的嵌入式数字远程视频监控系统

提出一种基于PSTN(公用电话网络)的数字远程视频监控系统的设计方案。系统整合多媒体、数字图像处理及传输技术,结合嵌入式系统及FPGA大规模可编程逻辑技术,利用现有的PSTN建立通信网络实现远程的视频监控与处理。用户只需拨打监控现场的电话号码,就可监视现场的实际情况。与传统的监控系统相比,该系统容易运行与维护,实现终端联网经济和方便。     

SPCE061A片上系统在家庭安全防护中的应用

采用凌阳公司新近推出的16位SPCE061A片上系统,提出了基于PSTN家庭安防产品中存在的不足及解决方案.