VitalPBX is free phone system based on the solid Linux and Asterisk platforms offering whole new level of user experience with offers fully responsive user interface and is easy to use, on any screen size. Downloads Manual here.
Secure video calls, conferencing, chat, desktop sharing, file transfer, support for your favorite OS, and IM network. All this, and more, in VitalPBX Communicator - the most complete and advanced open source communicator.
AstriVox is a software through which you can obtain detailed reports, summaries and statistics of the CDR of the PBX, it is also possible to apply costs to the calls. Another feature is the ability to search and play back the recordings.