... the same time- can insert 16 SIM cards(big or small)- Connected through the two data lines can be integrated ... one and two data lines, very simple;6,the size of a small, elegant, accounting for a smaller space standard 1U ... , material and information transfer on time;4,to avoid high communication costs to be incurred in a month;5,enterprises ... :28 multi MODEM POOL 8ports hot selling Mini card small size