... MODEM, GSM modem, RS232 WIRELESS GSM/GPRS MODEM, SMS GSM MODEM, huawei gsm modem,, sms module, gsm modem at command, wavecom wireless ... modem, sim card modem, GSM modem, huawei, gsm ... Wireless SpecificationEGSM900/GSM1800GPRS multi-slot class 10Compliant to GSM phase 2/2+Support DTMFSupport SMS and ...