... 16 port gsm modem 64 sim socket for Bulk sms and calling Main functions : Quad-band GSM/GPRS 850/900/ ... ,that is to say 16 port 64 sim gsm modem (fixed wireless terminal)16 individual Channels,each ... ,XP,2003/2000,Linux,Mac...OS. 16 port gsm modem Parameters:Phone interface: supply RJ-11 Phone ... interface converted to 16 landline phone ,turn your GSM signal to fixed telephone .2.USB interface,multi ...