First analysing the merits and shortcomings of the wireless data communication system based on gsm and the wire data communication system based on pstn from the three aspects of the economy , terminal motility and real - time , then putting forward the subject through measuring and comparing the three factors mentioned above 从经济性、终端移动性、实时性三方面分析了当前基于gsm的无线数据通信系统和基于pstn的有线数据通信系统的优缺点，权衡三方面而提出了本课题。
The research content of this paper is about the alarm and orientation real - time data communication system of mt and remote host , emphaticly , the paper takes the way that theory directs practice to design the system and develop the corresponding program , meanwhile to make the simulation experience for the program 本文研究的内容是关于移动终端与远程主机报警和定位实时数据通信系统，运用理论指导实践的方法对该系统进行设计和程序开发，并对开发的程序进行模拟实验。论文内容要点如下： 1
Edri has successively take on about 1900 project of design , consultation , supervision and lump - sum project , has accumulated professional technological superiority in large area , high level classifying air - condition system , ultra pure industry gas system , ultra pure water system , automatic control system , data communication system and static prevent , vibration prevent , electromagnetic pollution control which required by large - scale integrate circuit , optical fiber cable , pharmaceutical project and electronic project , etc Edri先后承担了设计咨询监理总承包工程近1900多项，对大规模集成电路光纤光缆生物制品电子工程等高新技术产品生产环境所需要的大面积高级别净化空调系统高纯工业气体系统超纯水系统自动控制系统数据通信系统以及防静电防微振电磁环境污染控制等方面的设计具有独特的专长。
