Communication gateway
Communication gateway is a terminal device that supports and connects to the network. It has the function of communication protocol conversion. The communication protocol consists of IP, MHS (broadcast communication protocol), IETF (Internet Association ETF) and WAP. It can be used for speech recognition (ASR), image recognition (CV) and other functions. The communication gateway can send the data sent by a node in the network to the network through the serial port. It not only has the function of transmission, but also can back up and restore the data transmitted to other networks. To ensure the security and stability of the network communication system. With the development of the network application in all kinds of industries more and more extensive. The security requirements for network applications are getting higher and higher. Today mainly introduces the types and functions of switches commonly used in industrial communication: the main function of switches is to connect with the computer network through ports on the switch or from the switch interface.
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1. Dual-port switch
A dual-port switch supports multi-port switching, that is, two ports can simultaneously provide communication services for multiple computers or workstations. Generally, two switches are connected together. This type of switch is mainly used in large-scale situations and data center switches. For example, dual-gigabit switches used by banks have high rate performance, a wide range of switch ports and good transmission performance. Therefore, it can support a variety of network communication protocols. It can ensure the whole network has high stability. If there is network instability or attack, it will be automatically removed from the network, thus reducing a lot of network overhead. In addition, it can ensure the network security and will not cause the entire network to break down due to network failure and network interruption. This type of switch plays an important role in the network. For example, many video surveillance systems need to connect multiple switches for data communication. Gateways are generally used in industry to connect multiple computers.
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2. Wan switch
A WAN switch is a switching device used between local or wide area networks. Its main function is to connect multiple devices to realize the interconnection within the WAN network. The biggest difference between this device and the general switch is that it can be extended to any corner of the network, even within the network can be implemented. Therefore, WAN switch is one of the most common devices and can be said to be the best of all switches. Due to the large switching capacity, large amounts of data can be transmitted. Therefore, it is also called a WAN switch. In a WAN, one device is connected to another at the same time, which means it will be able to exchange data continuously. This type of switching is called duplex switching. It can be used for a wide range of network applications.