CXT4000 enterprise phone system series supports up to 1500 users and up to 880 concurrent calls in normal office settings. In hybrid settings it can support up to 960 analog extensions (using Astribank telephony interfaces) which makes it perfect for implementations with hight-density existing infrastructure that is costly to replace, such as in some hotels, hospitals and other organizations. CXT4000 also supports up to 24 PRI lines.
Running CompletePBX operating system, it provides full featured enterprise level phone system.
Like the CXT3000, CXT4000 Blue Steel series provides additional hot-swappable HDDs and power supplies, IPMI interface and redundant power feed for up to four Astribank telephony interface units, which makes it highly suited for all mission critical applications including big call centers.