The following are the system requirements for the CUCM 12.5 bootable ISO download feature:
Cisco Unified Communications Manager (CUCM) 12.5 is a major release that introduced and shifted the underlying OS to CentOS . To perform a fresh installation or add a new node to a cluster, you must have a bootable ISO , as the standard upgrade images found on Cisco's public download page will not boot on a new virtual machine. 1. How to Officially Obtain the Bootable ISO cucm 12.5 bootable iso download
: You must deploy the correct CUCM 12.5 OVA template before mounting the ISO. This sets up the necessary CPU, RAM, and disk reservations. The following are the system requirements for the CUCM 12
To download the CUCM 12.5 bootable ISO image, follow these steps: you must have a bootable ISO