-Support GSM: 850M/900M/1800M/1900M.
-Support 4 GSM channels.
- The PCI slot is based on PCI2.2.
- Support the reversal function of polarity when call out by wireless.
- 32 bit bus master DMA data exchanges across PCI interface at 132Mbytes/sec for minimum host processor intervention.
- It supports all the functions of Asterisk PBX systems needed. It supports Asterisk,Elastix,Freepbx,Trixbox...
-G400P's driver totally compatible with TDM400P's driver- Zaptel or Dahdi, so user don¡¯t need to understand much knowledge about wireless part. All the program run on TDM400P can be used on G400P, it reduce users' difficulty of development.