4g router with Ethernet, online monitoring device "DTU"

1. Internal integration of TCP/IP protocol stack

The E-lins 4g router with Ethernet encapsulates PPP dial-up protocol and TCP/IP protocol stack and has an embedded operating system. In terms of hardware, it can be regarded as the combination of embedded PC and wireless GPRSMODEM. It has GPRS dial-up Internet access and TCP/IP data communication functions.

2. Provide two-way conversion function of serial port data

GPRS DTU provides serial communication interface, including RS232 and RS485, RS422, etc are the commonly used serial communication mode, and GPRS DTU serial data into mostly on the design "transparent conversion" approach, that is to say, GPRS DTU can transform a serial port on the original data into TCP/IP packet transmission, and don't need to change the original data communication content. Therefore, GPRS DTU can be connected to a variety of user devices that use serial communication without requiring any changes to the user devices.

3. Support automatic heartbeat and keep it online forever

It’s one of the advantages of GPRS communication network support GPRS terminal equipment permanently online, so typical of GPRS DTU are designed to support the permanent online function, which requires the DTU contains the heartbeat packets on electric automatic dialing, use to maintain permanent online (when long time data communication, mobile gateway connect DTU disconnected from center, heartbeat packets is 4g router with ethernet with data center to send a small data before the connection is disconnected, to keep connection is disconnected don't), automatic reconnection, the bolt support automatic dialing, etc.

4, Support parameter configuration, permanent save

As a kind of communication equipment, the router has a wide range of applications. In different applications, data center IP address and port number, serial port baud rate and so on are different. Therefore, GPRS DTU should support parameter configuration, and the configured parameters should be stored in an internal permanent storage device (generally FLASH or EEPROM, etc.). Once the power is on, it automatically works according to the set parameters.

5. Support user serial port parameter setting

The serial port parameters of different user devices are different. When DTU connects to the serial port of user devices, the DTU terminal should be set accordingly according to the actual serial port parameters of user devices, so as to ensure the normal communication and reliable data transmission of user devices.