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What are the wireless connection technologies of the... Internet of things (iot) applications have been deeply rooted in our lives. The E-Lins H685 industrial-grade router is a small industrial-grade wireless router with single or double LAN ports. TDD/ fdd-lte, 4G, 3G, GPRS network optional. Besides, what are the wireless connectivity technologies for the Internet of things?   1....

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The use of industrial wireless routers Industrial-grade wireless router adopts high performance 32-bit industrial-grade ARM9 communication processor, which is widely used in finance, electric power, postal, water conservancy, environmental protection, meteorology and other industries.   Industrial router is mainly used in intelligent transportation,...

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Cascade and stack of industrial-grade 4G routers The most basic star Ethernet architecture, the actual star enterprise network may be much more complex than this. This renaturation is not only reflected in how high-end network equipment, how complex configuration, more importantly, the performance of network switching level is more complex. Industrial routers and firewalls...

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The difference between 4G router and 4G DTU 4G industrial wireless router and 4G DTU are also used for wireless network data transmission of industrial equipment. But there are also significant differences between the two, and the differences between the two are mainly from the appearance of the interface, the use of methods and the application environment.   1....

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Characteristics and differences between RS485 and RS232 RS232 and RS485 have always been the weak current common interface, but there are a lot of people do not understand the difference between them is not very thorough.   I. overview of RS485   RS-485 serial bus is widely used when the communication distance is tens of meters to thousands of meters. RS-485...

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以低端路由器为例介绍工业级4g路由器标准的主要内容

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低端工业路由器标准与高端工业级路由器标准内容有一定差异,差别主要体现在工业无线路由器接口类型、性能要求、可靠性要求等方面。一般来说高端工业级无线路由器对性能要求高,接口速率要求高,可靠性要求高,它主要用作高速转发;低端路由器要求功能较多,除企业网应用外,公网中一般用它来作接入。上述两类工业4G路由器在基本功能方面差异不大。所以下文以低端路由器为例介绍工业级4g路由器标准的主要内容。

标准的第一部分指明标准应用的范围,规定了工业LTE路由器的技术要求,包括功能、指标、通信接口、通信协议、环境要求等。

第二部分罗列出工业全网通路由器标准所引用的标准与规范。如上文所述,有近百个文档。

第三部分列举在标准中使用的所有定义、术语和缩写,主要定义工业全网路由器以及低端工业级全网路由器。

第四部分指出工业级LTE路由器的功能划分以及实现方法,他们分别如下。

(1)接口功能:用作将工业级全网通路由器连接到网络。可以分为局域网接口及广域网接口两种。局域网接口主要包括以太网、令牌环、令牌总线、FDDI等网络接口。广域网主要包括E1/T1、E3/T3、DS3、通用串行口(可转换成X.21DTE/DCE、V.35DTE/DCE、RS232DTE/DCE、RS449DTE/DCE、EIA530DTE)等网络接口。(2)通信协议功能:该功能负责处理通信协议,可以包括TCP/IP、PPP、X.25、帧中继等协议。(3)数据包转发功能:该功能主要负责按照路由表内容在各端口(包括逻辑端口)间转发数据包并且改写链路层数据包头信息。(4)路由信息维护功能:该功能负责运行路由协议并维护路由表。路由协议可包括RIP、OSPF、BGP等协议。(5)管理控制功能:全网通工业级路由器管理控制功能包括五个功能,他们是SNMP代理功能、Telnet服务器功能、本地管理、远端监控和RMON功能。通过五种不同的途径对全网通工业路由器进行控制管理,并且允许纪录日志。(6)安全功能:该功能用于完成数据包过滤、地址转换、访问控制、数据加密、防火墙以及地址分配等。还有在第四部分中指出的全网工业路由器必须实现的基本功能。4g DTU

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