Errors introduced early in the communication of requirements are the most costly system errors to correct, leading to patch development and increased maintenance costs.
在沟通需求的早期引入的错误是最难纠正的系统错误，会导致开发补丁，并增加维护成本。
Availability of the communication service may be restricted for reasons of system maintenance.
通信服务的可用性，可能因系统维护的原因受到限制。
Secondly, it introduces the communication protocol of this system, including the frame structure, instruction structure and the process of wireless network setting up and maintenance.
其次，讲述了本系统使用的通信协议，包括数据帧的格式、命令格式，以及无线网络的建立和维护过程。
Application shows that this drive control system has higher dynamic performance and is capable of close-loop control and communication and ease of network configuration and maintenance.
实际应用表明，该控制系统动态性能高，适合于复杂的闭环控制和通信任务，易于进行网络配置及维护。
Then, tells the communication protocol that this system USES, besides frame structure, instruction structure and the process of wireless network setting up and maintenance.
然后，讲述了本系统使用的通信协议，包括数据帧的格式、命令格式，以及无线网络的建立和维护过程。
The system can be classified as a network communication module, transaction processing module and Database operation module, in order to facilitate future maintenance and software upgrades.
将系统划分为网络通信模块、业务处理模块、数据库操作模块三个模块，以便以后维护的方便性和软件升级。
The system has some excellent characters of easy setting, small cubage, communication on real time, low price and easy maintenance.
该系统具有体积小易于布置、通信实时、价格便宜、易于维护等优点。
This paper systematically describes and analyzes the structure of maintenance management system of communication and signaling system of JR Eastern Japan Express Rail Transit.
系统地描述和分析总结了JR东日本的新干线信号通信设备的维修管理体制。
The practical experiment shows the system features powerful function, simple configuration, reliable communication and ease maintenance. Key words Optimization of formula Steelmaking formula W…
实践证明，该系统具有功能强、组态方便、通信可靠以及易于维护等特点。
This thesis is based on the project named Comprehensive Maintenance Management System for the Shuohuang Railway Communication Network.
本文以朔黄铁路通信网综合维护管理系统为项目背景，完成了朔黄铁路接入网网络管理子系统的设计与实现。
However, the SCADA system used mostly nowadays use wire communication. Due to damageable and high cost, it is hard to expand and give steady maintenance to the wind-solar hybrid streetlight.
目前市场上流行的监控系统全部使用的是有线网络，但是由于有线网络存在易损坏、成本高等缺点，对路灯系统的扩充和维护都增加了困难。
However, the SCADA system used mostly nowadays use wire communication. Due to damageable and high cost, it is hard to expand and give steady maintenance to the wind-solar hybrid streetlight.
目前市场上流行的监控系统全部使用的是有线网络，但是由于有线网络存在易损坏、成本高等缺点，对路灯系统的扩充和维护都增加了困难。
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