This tutorial will explain how to install FreePBX 15.
You will first have to obtain the ISO file from here:
https://www.freepbx.org/downloads/
A tutorial by Sangoma also exists here:
https://wiki.freepbx.org/display/PPS/Installing+SNG7+Official+Distro
Although it may seem a bit redundant, since Sangoma already provides a tutorial on the same subject, we are writing this as a two-part tutorial, and we will explain in the second part how to configure FreePBX 15 with MultiTEL services.
I will not go through the steps of burning the ISO file on a DVD or USB or the steps describing how to upload this file in your favorite VM environment. We assume you already know how to do that.
So, here's the first screen. Choose "FreePBX 15 Installation (Asterisk 16) - Recommended.
Next screen, choose the first option - "Graphical Installation - Output to VGA" :
For the next screen, just hit Enter:
Various information will scroll on the screen for a while, and then you will see the Installation Summary screen: