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. Appearance interface the appearance interface of 4G router usually has a network port, which provides wireless networking functions for the network port devices and requires the network port devices to actively access the center to complete data transmission. In general, 4G router will provide a variety of network interface modes of WAN port, LAN or freely switched WAN/LAN port, which can be customized to match the interface according to the connection mode in the project.

The external interface of 4G DTU generally only provides the networking mode of serial port interface. 4G DTU is mainly used for two-way transmission between serial port data and IP data. And some projects need to use both the network port, but also need to use the serial port how to do? In the current era of rapid technological development, 4G router and 4G DTU function have been integrated.

2. Methods 4G router can be used to convert Ethernet and fieldbus communication protocols. Only the IP address specified by 4G router needs to be set in the terminal device as the gateway. If the specified IP address (or the specified IP address segment) is not set, the communication function cannot be implemented. The primary purpose of 4G DTU is to achieve dial-up, not gateway in the real sense. For example, 4G DTU can be used as a new network device after dialing into the terminal device, and the terminal device address can use this 4G DTU binding address.

3. 4G router in the application environment usually has VPN/APN function and private network encryption. In addition, industrial 4G router with WIFI function is suitable for outdoor WIFI wireless signal coverage projects and similar public transport WIFI and mall WIFI sharing projects. However, 4G DTU is applied in the field terminal with scattered transmission distance and high data communication rate, so the real-time performance of 4G DTU can meet the requirements of most industrial fields and is usually used for data acquisition and monitoring system. Such as charging pile remote monitoring system, environmental monitoring system, real-time monitoring of energy consumption, dam water conservancy project monitoring application.

4. Data access interface of terminal equipment

4 g router provides one network interface of data access, terminal equipment needs only the IP address of the mouth to the 4 g router in the network as a gateway to the IP address of the terminal device must use specified or specify the IP address in the address period, 4 g router to specify the server hostname or IP address of the IP address of the server host for data exchange, and all the other 4 g router is not set between the address of the can't communicate.

5, 4 g DTU data access generally also provides a serial port or network interface, but their use is used to dial, not used to do in the true sense of the gateway, such as serial interface 4 g DTU after completion of the access terminal dial-up, 4 g DTU as terminal equipment of a new network equipment, terminal equipment address using the new network equipment binding address; The 4G DTU of the network interface is similar to the ADSL of telecommunications, which requires the device to complete a dial-up action.

6. IP address used by the terminal device

The IP address used by terminal devices using 4G routers is any IP address that can be set by itself or in the IP address segment, which is also different from the IP address assigned by the UIM card.

The IP address used by terminal devices using 4G DTU is generally the IP address assigned by UIM card dialing (which is specified by 3A).

7. Transmission security of terminal equipment

Terminal devices using 4G routers must use the specified IP address, and any other address cannot communicate. After the data of the terminal device passes through the 4G router, the content transmitted through the wireless network is encrypted. Generally, the data transmitted in the intercepted wireless network cannot be decrypted, and the encrypted data can only be decrypted correctly by the designated communication server. At the same time, there is a unique corresponding serial number and other key processing for all data. 4G router guarantees that the terminal device data will not be replayed or resent.

Using 4 g DTU terminal device using IP address would not have such restrictions, so just can assign IP addresses can and to communicate with the server system, terminal equipment data after 4 g DTU, use the wireless network to transmit the contents of the general only through IP head processing, intercept wireless network transmission of data simply remove header information can speak transmission data display; At the same time, the data are not processed accordingly. 4G DTU may lead to the replay or retransmission of wireless data, which will lead to abnormal system, thus causing potential security risks.

8. Wireless access security

Using 4 g router data exchange is using a wireless router and communication between the server to establish the safety of the tunnel, all of the data exchange can be to end (terminal) to end (server), and any other middle to end data are cannot communicate effectively, that is to say, at the ends of the wireless network provider will not be able to enter any system.

4G DTU data exchange USES the data exchange process within the wireless network provider, which enables the wireless network provider to easily access any system at both ends of the communication.

9. Anti-interference of terminal equipment

Core system USES 4 g router is embedded operating system, only can use very little data port, and the relationship between the terminal equipment is only a routing, so terminal equipment cannot reach the other end, even not be able to access other terminal equipment of the same type, even if there is a terminal device is controlled by a virus or by an outsider, is only affect the a terminal device, the other is not affected.

Terminal devices using 4G DTU are related to 4G DTU and can easily access other terminal devices. If one terminal device is controlled by a virus or an outsider, all terminal devices and the central server system will be seriously threatened.

10. Equipment status monitoring

4G router can monitor the status at the same time, and basically know where the problem is and the corresponding solutions through log information.

When using 4G DTU, the status monitoring cannot be carried out, so when encountering problems, it will take much trouble or trouble to check.

11, server network routing Settings

When using 4G router to access the terminal device, it is necessary to add a 4G router from the server to the terminal device and use the communication server as the gateway, thus reducing the complexity of the network.

When using 4G DTU to access the terminal device in the server, it is to add a route to the terminal device in the server with the access interface of the wireless network provider as the gateway (or related route).

12. Anti-interference of server network

When using 4G router, the data transmission must conform to the preset regulations, otherwise, the communication cannot be carried out correctly, reducing the possibility of unnecessary network traffic. At the same time, according to the sent serial number and other key processing, to ensure that the server data will not be replay or resend.

4G DTU does not carry out relevant filtering during data transmission, so other machines can directly send some illegal information to the device terminal through the network. Meanwhile, 4G DTU increases unnecessary network traffic. At the same time, the data is not processed accordingly, which may lead to the replay or retransmission of wireless data, which will lead to the abnormal system, thus causing security risks.

13. Data compression and transmission

4G routers can compress large packets before transmitting, thus reducing network traffic, increasing network bandwidth and improving data transmission efficiency (except for images and images with high compression ratio).

4G DTU generally does not compress data during data transmission.

14. Processing of exchange data

Communication server is the core of 4G router, so there must be one host installed on the center server side for 4G router to communicate with. All data exchanged between devices must be encrypted, decrypted, verified and routed by it. There are no other intermediate servers in 4G DTU, but directly connect to the center server.