... sim modem 2,sending bulk SMS 3,with bulk sms software 4,quad band 5,AT Command Quad band 64 port ... ,TCP Protocol900/1800Q24plusSMS,MMS,TCP Protocol850/900/1800/1900Applications · Large shopping malls, supermarkets· Professional market, large wholesalers· Large hotels, large-scale ... Sim card into device2, Install Driver. 3, Install Software. We provide free software named SMS Caster if you don't have.P ...