The FreePBX Distro is maintained and put out by the FreePBX.org project. Lots of other companies will bundle FreePBX GUI on their own LAMP (Linux, Asterisk, MySQL, PHP and Asterisk) stack, but that does not mean those systems are the Official FreePBX Distro.
Below are steps to determine if you are using the Official FreePBX Distro.
From the CLI:
On newer systems, execute the following command from the CLI:
On older systems, execute the following command from the CLI:
From the System Admin Module:
Open the System Admin module in the GUI, and view the PBX Firmware version number in the module's home page:
What do the FreePBX Distro Version Numbers Mean?
The FreePBX Distro Version Numbering System tells you at a glance what the core pieces of each track are. Numbers correspond to a major track number, GUI version, operating system, and minor release revision.
For example, below is an explanation of the numbers found in our code-named “Call Forward” Release FreePBX Distro 4.211.64-10:
4.211.64-10 - The first number 4 represents the Major Track Number
4.211.64-10 - The second number 211 refers to FreePBX 2.11 GUI
4.211.64-10 - The third number 64 refers to CentOS 6.4 operating system
4.211.64-10 - The final number 10 is used as the Minor Release Revision of this Major Track Number
Here's an example of a newer version, FreePBX Distro 10.13.66-2:
10.13.66-2 - The first number 10 represents the Major Track Number
10.13.66-2 - The second number 13 refers to FreePBX 13 GUI
10.13.66-2 - The third number 66 refers to Linux OS 6.6 operating system
10.13.66-2 - The final number 2 is used as the Minor Release Revision of this Major Track Number