A: Approximately 5.8 GB to 6.2 GB depending on the service update.
In the "Search Downloads" box, type "Unified Communications Manager (CUCM)" (do not just type "Call Manager"—the algorithm prefers the full name). Cisco Cucm 12.5 Download
| 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. | A: Approximately 5
For a fresh install, select the (e.g., UCSInstall_UCOS_12.5.1.11900-26.sgn.iso ). Be prepared for large file sizes (4GB to 6GB). select the (e.g.
Native support for iOS and Android.