-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