... Standard and Band: GSM850/900/1800/1900MHz 3G modem. Designed with industrial grade, supports SMS, CSD, RS232, AT Commands, with the function of accessing ... (DL/UL)6. GPRS: 85.6Mbps(DL), 42.8Kbps(UL)7. Support SMS, CSD and data function8. Standard AT command interface B ...