CUCM 12.5 introduced several critical shifts for administrators: Release Notes - Unified Communications - Cisco

: Used primarily for upgrades and patches (SUs).

: Required for fresh installations on virtual machines. These are typically available via the Product Upgrade Tool (PUT) for existing customers.

Updated: Cisco Cucm 125 [new] Download

CUCM 12.5 introduced several critical shifts for administrators: Release Notes - Unified Communications - Cisco

: Used primarily for upgrades and patches (SUs).

: Required for fresh installations on virtual machines. These are typically available via the Product Upgrade Tool (PUT) for existing customers.