1,gsm usb modem for gsm sim card 2,sending bulk SMS 3,with ... bulk sms software 4,quad band 5,AT Command 32 channel USB gsm modem for ... 1800/1900MHz or 900/1800 Mhz32 x SIM card(big/small) slotsComply with GSM phase2 standardSend and ... Windows 2000 (Server and Pro)1, Insert Sim card into device2, Install Driver. We will send ... support 32 channel GSM usb modem for gsm sim card