The Xorcom CXE2072 is a stand-alone system which may be equipped with up to 1 PRI, 8 FXS and 8 FXO ports in a single, 19″ 2U chassis. Additional PSTN / Analog phone ports can be provided by connecting external Astribank units via the USB2 ports, for a total of up to 160 PSTN / Analog phones ports, up to 200 users and up to 45 concurrent calls. Xorcom CXE2072 Key Features Lifetime License for 350 Extensions, Full Asterisk Features, including voicemails, hunt groups, call center groups, and auto attendants (IVRs), etc. Equipped with 1 PRI, 8 FXS and 8 FXO ports Basic built-in call center with call recording, barge and whisper Emergency notification module Endpoint manager User-friendly Web interface The robust Xorcom CXE2072 comes standard with a dual hard drive (RAID1), redundant fans for cooling, internal backup and restore, front panel USB access, and two Ethernet ports to allow separation of IP voice and data traffic for improved voice quality and increased throughput. A multi-function LCD (Liquid Crystal Display) on the CXE2072 allows the system administrator to perform several of the most common functions directly on the front panel of the IP-PBX without having to attach a keyboard and monitor. The touch panel uses a text-based menu tree to facilitate monitoring, maintenance and troubleshooting of the entire telephony system. Also available with the CXE2072 is the Xorcom Rapid Recovery™ backup utility, provided on Disk-on-Key. CXE2000 units with an FXS module support Xorcom Rapid PA to provide public address functionality to Asterisk installations, and are also offered with I/O ports to support a wide array of peripheral devices.