: CUCM 12.5 runs on CentOS, whereas previous versions used Red Hat Enterprise Linux.
This defines the virtual machine (VM) configuration (CPU, RAM, Disk) for deployment in environments like VMware ESXi. ISO Image: Bootable ISO: Required for fresh "from-scratch" installations. Non-Bootable ISO:
Log in using your CCO credentials. If your account is not linked to a contract, you will see empty folders or an "Unauthorized" message.
To perform a standard installation or upgrade, you typically need two primary file types: OVA Template:
Used for fresh installations or major upgrades via the OS Administration interface. Device Packages: