"The open source Asterisk IP-PBX is one of the most disruptive technologies in the market. But plain vanilla Asterisk can be challenging in that it isn't exactly a point-and-click install with a simplified GUI administration.
"That's where a whole cottage industry of GUI add-ons for Asterisk sprung up, with one of the leading implementations being Asterisk@Home, renamed and rebuilt earlier this year, as Trixbox..."