... and of course different price,we have wavecom modem with Q2303,Q2403,Q2406,Q24Plus. Q2303 support sms ... protocol.900/1800MHZ Q24plus suport sms,mms and EDGE.850/900/1800/1900MHZ Before buying,pls check ... ,MMS,FAX,WEB,TCP/IP,OPEN AT Q2687 EDGE,more fast in date transfer,support SMS,MMS ... ,TCP/IP stackMulti-socket GSM GPRS 16 ports modem poolProducts FeaturesJust like eight single-channel equipments work ...