Asterix IP-PBX is an open source, free to download and use IP based telephony server which can be used for your business. Now you will ask why this is free and open source when it can be easily sold for quite a high amount. As a normal user won’t go for Asterix IP-PBX, as he don’t need PBX machines. Well Digium company who developed Asterix makes money by selling hardware and keeping the software free. It is compatible for commonly available telephony hardware and if someone buys hardware developed by Digium it increase their market share.
By providing it free in open source model they promote their hardware, and if you want to buy other hardware you can always buy them from other vendor and use Asterix by customizing for your hardware.
Because Asterix source code is available for free, your business will never stop because you decided to buy some other hardware or you need some customization. You can do whatever you want with you Asterix IP-PBX software and customize it your way.
To Configure Asterix IP-PBX and start working you just need to go through 4 step process.