1.zte wireless 2.with standard TCP/IP protocol stack 3.Open AT command 4.RS232/RS485 IP modem, RS232 modem, GSM IP modem, GPRS data modem, data terminal ... ,GPRS DTU, TCP/IP modem, IP WIRELESS MODEM, SIMCOME MODEM, 3G IP MODEM, EDGE MODEM,gsm fixed wireless terminal, fixed wireless ...