Testing is performed using clean installs of macOS onto erased volumes, not upgraded systems.
History for older releases is at the macOS Archive.
macOS FreeSWITCH™ Installer (macFI)
The macOS FreeSWITCH™ Installer is the recommended method because it automates all of the manual steps, providing much simpler and faster installation. Other advantages include renaming existing FreeSWITCH™ directories before installation, and creating installation logs. The macFI information and download is located at macOS macFI Installation.
A manual installation requires use of the Terminal application to enter commands to setup directories, install prerequisites and FreeSWITCH™.
To perform a manual installation use the macOS Manual Installation instructions,