1.4 Port Asterisk GSM Card 2.PCI 2.2 Slot 3. PSTN, Phone, CDMA, GSM Support 4.DTMF Detection 5.Factory Price ... slot type is PCI-E socket, line PCI-E 2.2 standards. It is mainly used in wireless, PSTN ... , Interface: PCI 2.2 2, CPU 800+MHZ 3, RAM 128+MB 4, Linux kernel 2.4.x or 2.6.xSize and ... environmental instructions for using: 1, Temperature Operation: 0 to 80°C 2, Temperature Storage: -35°C to 120°C ...