The iX1000 is the model of large enterprise IP telephony platforms GLOBAL CS and has the following characteristics: number of users up to 1000, the number of concurrent calls: up to 452 calls / second gateway TDM / IP: support up to 8 ports analog or digital s: 8xE1 or 8xT0 xFXO or 8 / FXS, Redundancy mode Master / Slave, basic phone functionality + advanced features, Administrative Tools, multi-level, multi-level billing, multi-protocol VoIP SIP/H323/IAX/MGCP and multi-VoIP codecs: G722.2, G711, G723, G729. There are different models depending on the iX1000 business need.