Wireless terminal; GSM/ GPRS 900/ 1800, 850/ 1900 or 850/ 900/ 1800/ 1900MHz; 16 SIM card slots; USB 2.0 interface; Internet wireless access; sends/ receives SMS, MMS, E-mail and data, maximum 10, 000 SMS, 9, 600 MMS per hour; 115Kbps maximum transmission speed; 100 to 240V voltage input; -20 to 60 C working temperature; -25 to 70 C storage temperature; double tone multi-frequency ( DTMF) function; complies with GSM Phase2 standard; includes power cable, PCI card, 16 data cables, 16 antennas, CD; 440x215x50mm; 3.8kg