The CX-4G is a compact and feature-rich GPRS transparent transmission module for Viettel, vinaphone, mobifone, vietnammobile... and 2G network standards. With "transparent transmission" as the core of the function, it is highly easy to use, and users can easily and quickly integrate into their own systems. The software of this module is perfect, covering most common application scenarios. Users can realize transparent transmission of two-way data from serial port to network through simple setting. And support custom registration package, heartbeat package function, support 4 way Socket connection, and support transparent cloud access. With high speed and low latency.