-The GSM is a module with 1 GSM port to terminate GSM network. -It can be used in MyPBX Standard MyPBX Pro MyPBX Enterprise and NeoGate TG200. GSM Parameters: -GSM channels: 1 channels; -Network types: 850/900/1800/1900MHz (Quad-band) -GSM engine: SIMCom -Transmitter power: +33dBm(2W) 850/900MHz +30dBm (1W) 1800/1900M -SIM card: 1 SIM per channel small plug-in 3V