... PSTN, Phone.2,Supports GSM, CDMA two kinds of wireless communication standard.3,Support GSM: 850M/900M/1800M/1900M, CDMA ... GSM400E’s driver totally compatible with TDM400P’s driver—WCTDM, so user don’t need to understand much knowledge about wireless part. ... PBX3, GSM (CDMA) Call back4, GSM (CDMA) wireless bypasses system5, GSM (CDMA) wireless call centre.Hardware and software requirements:1, Interface ...