Cisco Cucm 12.5 Virtualization Requirements [patched] Jun 2026

that pre-configure the VM for you. Your hardware needs depend entirely on your user count: User Capacity Disk Space 2,500 Users 7,500 Users 1 x 110 GB 10,000 Users 1 x 110 GB

You must deploy the official Cisco-provided Open Virtualization Archive (OVA) template for CUCM 12.5. cisco cucm 12.5 virtualization requirements

As organizations continue to modernize their communication infrastructures, Cisco Unified Communications Manager (CUCM) remains the gold standard for enterprise call control. Version 12.5 is a particularly popular long-term support release, bridging traditional on-premise reliability with cloud-ready architectures. However, unlike a standard software application, CUCM cannot simply be installed on any server. It operates exclusively within a . that pre-configure the VM for you