XiVO is an IP-PBX, a system that connects phones inside an organization with public and mobile telephone networks. An IP-PBX is a PBX that provides audio, video, and instant messaging services through the TCP/IP protocol.
AstLinux is a "Communications and Network Appliance" open source software distribution. Unified communications including voice, presence and messaging, provided by Asterisk (SIP, DAHDI) and Prosody (XMPP). AstLinux's framework allows integrators and developers to deploy solutions that may be remotely monitored, supported and upgraded using an optimized 40 MB image.