... ), PSTN, Phone.2,Supports GSM, CDMA two kinds of wireless communication standard.3,Support GSM: 850M/900M/1800M/1900M, CDMA ... .6, Support the reversal function of polarity when call out by wireless.7 32 bit bus master DMA data exchanges across ... , Mobile IP-PBX3, GSM (CDMA) Call back4, GSM (CDMA) wireless bypasses system5, GSM (CDMA) wireless call centre.Hardware and software requirements:1, Interface ...