Configuration mode and Normal mode selecting by switch

Configurable by Robustel Modem Configurator Pro V2 GUI

Auto GPRS connection (no AT commands required) and watchdog for reliable communications

Transparent TCP client, TCP server and UDP socket connections

 Modbus/RTU to Modbus/TCP

Support Virtual COM (COM port redirector)

Various dial-up policies

Always online: automatic GPRS connection while it powered on, automatic redial while the line dropped

Serial data wakeup

Wakeup on Caller ID/SMS

Wakeup on SMS

Wakeup at preset time of a day

Wakeup periodically at preset interval

Auto GPRS connect/reconnect, Keep Alive command to maintain socket connection

Auto disconnect GPRS when idle, switch off wireless module to save power is optional

Auto SMS of IP for dynamic IP SIM card

Remote configuration via SMS

Packetization methords: packet length / time interval / special end characters

Auto reboot at preset time of a day; Auto reboot via call/SMS

Firmware upgrade via serial interface/RobustLink