... on Cinterion module MC37I 3.900/1800 MHz 4.internet, SMS, data WIRELESS USB MODEM,GPRS modem,CDMA modem, HSUPA modem ... GPRS network and adopts industrial wireless GPRS module.It supports SMS, CSD and data function.EF1103 GPRS modem is designed with ... -slot class 10Compliant to GSM phase 2/2+Support DTMFSupport SMS and CSD functionStandard AT command interface InterfaceRS232 serial port, rates ...