Never create a blank virtual machine manually for CUCM. Always download and deploy the official Cisco-provided . This template automatically configures the correct hardware parameters, including:
The system will boot into the Cisco Installation Wizard. Press Enter to proceed.
For a fresh install, you must download a base ISO, such as UCSInstall_UCOS_12.5.1.10000-22.sgn.iso (or later base builds), and apply subsequent patches during or after the initial build. Prerequisites for CUCM 12.5 Deployment cucm 12.5 bootable iso download
** Cisco Unified Communications Manager (CUCM) 12.5 Bootable ISO: Full Report**
Name your VM (e.g., CUCM-PUB-12.5 ) and select the OVA file you downloaded from Cisco. Never create a blank virtual machine manually for CUCM
Cisco Systems strictly controls the distribution of its voice and collaboration software. CUCM is proprietary enterprise software and is not available as a free public download. The Official Cisco Software Central Path
The ISO installs a 60-day demo mode automatically. After that, CUCM locks configuration changes. No license file = dead cluster. Press Enter to proceed
Once booted, the ISO loads a CentOS-based installer. You will need: