@PitzKey Asterisk versions 16.17.0 and 18.3.0 are in the sng7-testing repo now.
# yum list asterisk18
Loaded plugins: fastestmirror, versionlock
Loading mirror speeds from cached hostfile
Available Packages
asterisk18.x86_64 18.3.0-1.sng7 sng7-testing
# yum list asterisk16
Loaded plugins: fastestmirror, versionlock
Loading mirror speeds from cached hostfile
Installed Packages
asterisk16.x86_64 16.17.0-1.sng7 @sng7-testing