1. OpenVox A400P21 - 4 FXO/FXS (P/N: A400P21) - Giá: 5.9tr
http://mangtot.com/openvox-a400p21-4-fxofxs-1-1-723311.html

2. OpenVox D110P Single Port T1/E1 PCI Card (P/N: D110P) - Giá: 8.9tr)
http://mangtot.com/openvox-d110p-single-port-t1e1-pci-card-1-1-723294.html