8 port gsm modem sending&recieving bulk SMS with bulk sms software 8 SIM cards slots AT Command 2013 hotselling sms broadcaster 8 Port modem pool /bulk sms1,8 ports modem2,sending&recieving bulk SMS3,with bulk sms software4.8 SIM cards slots5,AT Command Highlight1>High-speed bulk sms sending ,each port can send 600 pcs of sms within 1 hour.2>Brand new first hand modules.Wavecom ,Cinterion, ...