| File Type | Extension | Purpose | | :--- | :--- | :--- | | | .iso | Full installation media for bare metal or new VMs. | | OS Update | .iso (smaller) | Upgrading from CUCM 11.x or 12.0 to 12.5. | | COP File | .cop.sgn | Patch or upgrade file applied to an existing 12.5 installation. |
Log in using your CCO credentials. If your account is not linked to a contract, you will see empty folders or an "Unauthorized" message. Cisco Cucm 12.5 Download
In the "Search Downloads" box, type "Unified Communications Manager (CUCM)" (do not just type "Call Manager"—the algorithm prefers the full name). | File Type | Extension | Purpose |