4,8,12,16 FXS/FXO ports PCI/PCI-E card ... gain PCI/PCI-E analog card for Freeswitch and Asterisksupport 4 to 16 FXS/FXO ports Applications: 1, PBX/IVR Services2, VoIP ... .22, CPU 800+MHZ3, RAM 128+MB4, Linux kernel 2.4.x or 2.6.xSize and Weight5, Size(L*W ... using: 1, Temperature Operation: 0 to 80°C2, Temperature Storage: -35°C to 120°C3, Humidity: 10% to 90% Non-condensing4, Voltage: 5V ...