4G DTU Functions – E-Lins Technology

DTU function：

(1) Internally integrated TCP / IP stack

The 4G DTU encapsulates the PHCP dial-up protocol and the TCP/IP stack and has an embedded operating system. From the hardware point of view, it can be seen as a combination of embedded PC and wireless 4G MODEM; it has 4G dial-up Internet and TCP / IP data. The function of communication.

(2) Provide serial data bidirectional conversion function

4G DTU provides serial communication interface, including RS232, RS485, RS422, etc. These are commonly used serial communication methods. 4G DTU is designed to design serial data as "transparent conversion", which means that 4G DTU can transfer raw data. The serial port is converted to a TCP/IP packet for transmission without changing the original data communication content. Therefore, the 4G DTU can be connected to various user equipments that use serial communication, and there is no need to change the user equipment.

(3) Support automatic heartbeat, keep permanent online

One advantage of an LTE communication network is that it supports LTE terminal equipment to be permanently online. So this requires the DTU to include automatic power-on dialing and use the heartbeat package to stay permanently online

(4) Support parameter configuration, permanent storage

As a communication device, 4G DTU has a wide range of applications. In different applications, the IP address and port number of the data center and the baud rate of the serial port are different. Therefore, the 4G DTU should support parameter configuration and save the configured parameters in the internal permanent storage device. When powered up, it will automatically run according to the set parameters.

4G DTU use occasions:

(1) The site can only use the wireless communication environment

When the equipment of the data collection site needs to work on the move, or the collection site is on site, the wired communication environment cannot be provided. At this point, the adoption of LTE wireless networks may be a good choice.

(2) The transmission distance of the field terminal is dispersed

Since the LTE network is a public network covering the whole country, the main advantage of using LTE to transmit data is that the field collection points can be gradually implemented nationwide, as is the distance between the data center and the field collection. Wireless public network communication (including GPRS) A very significant advantage of /CDMA networks, 3G networks, etc.) is the inability to implement dedicated wireless communication networks.

(3) Appropriate data real-time requirements

In domestic LTE networks, the delay in transmitting data is in the range of a few seconds. That is, packets sent from the 4G DTU will reach the data center roughly after 2 seconds. Instead, packets from the data arrive at the 4G DTU in about 2 seconds.

About the Company

E-Lins is a leading provider of industrial 4g router, sim card wifi router 4g, 4G modem, dual sim 4g router and router LTE. The company prides itself on delivering the best equipment at highly competitive prices to its customers around the world.