... wireless Asterisk PCIE card which is mainly applied to GSM, PSTN and Internet environment. Support the access of GSM, PSTN,telephone ... PSTN, Phone.2,Supports GSM, CDMA two kinds of wireless communication standard.3,Support GSM: 850M/900M/1800M/1900M, CDMA ... PBX3, GSM (CDMA) Call back4, GSM (CDMA) wireless bypasses system5, GSM (CDMA) wireless call centre.Hardware and software requirements:1, Interface ...