FreePBX Commercial Pro Modules are additional commercial modules that can be added to enhance and add functionality to a base install of FreePBX Distro. Commercial Modules can be purchased in the FreePBX Distro Market Place and are only supported on the FreePBX Distro platform. We also recommend only using Asterisk 1.8, 10 or 11 as Asterisk 12 and 13 have lots of known issues that will take time to get fixed in FreePBX and Asterisk.