Zycoo IP PBX without module, Extension Users:600,

Module:4FXS/4FXO/2FXOS/2GSM/4GSM/2WCDMA/4WCDMA/4BRI/PRI(E1/T1) ,

Concurrent Calls:150(Max) Supported , Supported Maximum Module :  2 ,

Voicemail/Recording:30000Hrs (internal storage), SDRAM: 1GB DDR3, Storage:16G EMMC + 1TB Surveillance HDD