... Card 2.PCI 2.2 Slot 3. PSTN, Phone, CDMA, GSM Support 4.DTMF Detection 5.Factory Price SinoV-GSM800 8 GSM GOIP ... urge with the special-purpose drive chip, it make the card has super strong anti-interference. And support clock resume automatically ... will distribute the voice channels automatically. Applications: 1, GSM (CDMA)- VoIP gateway 2, Mobile IP-PBX 3, GSM (CDMA) Call back 4 ...