... transfer 4. Support DDNS IP modem, RS232 modem, GSM IP modem, GPRS data modem, data terminal,GPRS ... , Support transparent data transfe, gprs ip modem, gsm modemgprs modem with rs232 rs485 io for m2m meter ... I/OF2114 GPRS IP MODEM is a kind of cellular terminal device that provides data transfer function ... /GSM1800MHz, GSM850/900/1800/1900MHz(optional)Compliant to GSM phase 2/2+GPRS class 10, class 12 ...