... 1.4 Port Asterisk GSM Card 2.PCI 2.2 Slot 3. PSTN, Phone, CDMA, GSM Support 4.DTMF Detection 5.Factory Price SinoV-GSM400 4GSM GOIP asterisk card ... /asterisk voip gatewayProduct Description Products: SinoV-GSM400E is a four-way wireless voice cards, slot type is PCI-E socket, line PCI-E 2.2 ... wireless call centre.Hardware and software requirements: 1, Interface: PCI 2.2 2, CPU 800+MHZ 3, RAM 128+MB ...