: Starting with version 12.5, CUCM must run on virtual machines; bare-metal server installs are no longer supported.
Once you have successfully booted and installed from your CUCM 12.5 ISO, take these steps immediately: cucm 12.5 bootable iso download
I understand why you’re looking for a . Whether you’re building a new lab, refreshing a legacy deployment, or prepping for a migration to version 14 or 15, having the correct installation media is critical. : Starting with version 12