12.5 Bootable Iso Download [upd] — Cucm

Cisco publishes MD5/SHA512 checksums. :

To create a bootable USB drive or DVD from the CUCM 12.5 ISO image, follow these steps: cucm 12.5 bootable iso download

After downloading the CUCM 12.5 ISO image, verify its integrity by checking the MD5 checksum: Cisco publishes MD5/SHA512 checksums

To download the CUCM 12.5 bootable ISO, follow these steps: Always read the "Readme" accompanying the ISO

CUCM 12.5 has multiple COP file requirements. The base ISO (e.g., 12.5.1) will not work on UCS M5 blades with latest BIOS unless you also integrate a bootable COP file for drivers. Always read the "Readme" accompanying the ISO.

The ISO installs a 60-day demo mode automatically. After that, CUCM locks configuration changes. No license file = dead cluster.

Once you have successfully booted and installed from your CUCM 12.5 ISO, take these steps immediately: