... .PCI 2.2 Slot 3. PSTN, Phone, CDMA, GSM Support 4.DTMF Detection 5.Factory Price ... wireless (GSM ), PSTN, Phone. 2,Supports GSM, CDMA two kinds of wireless communication standard. 3,Support GSM: ... channel. GSM800 realize the integrate of Wireless(GSM or CDMA) and PSTN. 3, High security: It adopts ... GSM (CDMA) wireless call centre.Hardware and software requirements: 1, Interface: PCI 2.2 2, CPU 800+MHZ 3, ...