... ports Applications: 1, PBX/IVR Services2, VoIP Services3, VoIP Gateways4, FAX Server, FAX On Demand5, Voice Mail Services6, Call Centers7, Prepaid Calling Card ... , Interface: PCI 2.22, CPU 800+MHZ3, RAM 128+MB4, Linux kernel 2.4.x or 2.6.xSize and Weight5 ...