... PCI 2.2 standards. It is mainly used in GSM wireless and INTERNET environment and Asterisk PBX ... 1,Support the access of wireless (GSM ), PSTN, Phone. 2,Supports GSM, CDMA two kinds of wireless communication ... part. All theprogram run on TDM400P can be used on GSM800, it reduce users' difficulty of development ... each channel. GSM800 realize the integrate of Wireless(GSM or CDMA) and PSTN. 3, High security ...