Our ip modems/gateways are widely used as data transmission terminal for power distribution remote monitoring and control system, such as Feeder Terminal Unit (FTU) Automation Solution, Distribution Terminal Unit (DTU) Automation, and Ring Main Unit Automation in the electric power distribution network. These modems can conveniently and transparently connect power secondary equipment (FTU, DTU, Ring Main Unit, etc. ) with serial port to a public cellular network. The modem(gateway) has high-reliability GPRS/3G/4G communication module in it and With GSM/GPRS/3G/4G LTE full band support, the on site equipment could be guaranteed staying connected or recovered from any unexpected interference. With Four-faith's industrial design, higher EMS level are tested to ensure the highest reliability for any harsh environment.