Differences between 4G DTU and 4G industrial router

时间： 2023-07-28 来源：usr News

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Differences between 4G DTU and 4G industrial router：

Different network interfaces

The 4G LTE modem data access is generally provided with a serial port or a network interface, but they are used for dialing and are not used as a gateway in the true sense. For example, after the 4G LTE modem with a serial interface completes dialing in the access terminal device, The 4G LTE modem is regarded as a new network device of the terminal device, The address of the terminal device uses the address bound by the new network device; The 4G LTE modem of the network interface is similar to the telecom ADSL Internet access, which generally requires the device to complete a dialing action.

The 4G cellular router provides one network interface for data access, and the terminal device only needs to use the IP address of the 4G cellular router network interface as the gateway, and the terminal device must use the specified IP address or the address in the specified IP address segment. The 4G cellular router can exchange data with the server host of the specified IP address or the server host in the IP address segment. The 4G cellular router cannot communicate with other addresses that are not set.

Different methods of use

The main purpose of the 4G LTE modem is to implement dialing, not a gateway in the true sense. For example, the 4G LTE modem can be used as a new network device after the access terminal device completes the dialing link, and the terminal device address can use the 4G LTE modem binding address.

The 4G cellular router can convert the Ethernet and fieldbus communication protocols and only needs to set the IP address specified by the 4G cellular router as the gateway in the terminal device. If the specified IP address (or the specified IP address segment) is not set, the communication function cannot be realized.

Different network anti-interference

The 4G LTE modem is used without relevant filtering during data transmission, so other machines can directly send some illegal information to the device terminal through the network, and the 4G LTE modem increases unnecessary network traffic; At the same time, the data is not processed correspondingly, which may lead to the rebroadcast or retransmission of wireless data and the abnormality of the system. Thus, there are potential safety hazards.

When using a 4G cellular router, the data transmission must comply with the pre-set provisions, otherwise, the communication cannot be carried out correctly, which reduces the possibility of unnecessary network traffic. At the same time, it can ensure that the server data will not be replayed or retransmitted according to the sent sequence number and other key processing.

Different application environments

The transmission distance of the 4G LTE modem used in the field terminal is relatively scattered, and the data communication rate is relatively high, so the 4G LTE modem can meet the real-time requirements of most industrial fields, and is usually used as a data acquisition and monitoring system. For example, environmental monitoring systems, real-time monitoring of energy consumption, remote monitoring system of charging piles, monitoring the application of dam water conservancy projects, etc.

The 4G cellular router usually has VPN/APN function and private network encryption. In addition, the 4G cellular router with WIFI function is suitable for outdoor WIFI wireless signal coverage projects and shared projects such as mall WIFI and bus WIFI.

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