"Trixbox is far more than re-packaged Asterisk; it's a big integrated bundle that includes the FreePBX graphical administration interface, the HUDlite user's interface, SugarCRM (customer relationship management), and Trixbox 2.2 even gives you the option of using the AsteriskNOW graphical interface.
"A considerable amount of thought and work has gone into overhauling the Web interface. It has been completely redesigned, reorganized, and streamlined."