Are you planning a or an upgrade from an older version?
ESXi 6.5, 6.7, and 7.0 (Check the Cisco Compatibility Matrix for specific SU sub-versions).
It is strongly recommended to use Cisco PCD for planning and executing upgrades. Step-by-Step Upgrade Guide (11.x to 12.5)
If you downloaded an upgrade ISO, it may not be bootable by default. Ensure you download the specific bootable version if you are performing a bare-metal virtual machine installation.
Cisco Unified Communications Manager 12.5 (formerly Cisco CallManager) is the engine behind Cisco’s enterprise-level IP telephony systems. It handles call routing, device registration, and signaling for voice and video endpoints.
CUCM communicates directly with the Cisco Smart Software Manager (CSSM) cloud portal.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
Forward and reverse DNS lookup zones must contain valid records for your CUCM Publisher and Subscribers. Mismatched DNS records will cause the installation to fail.
You must have a valid Cisco Service Contract (like SmartNet) associated with your Cisco.com ID to access the software. Virtualization Platform:
Are you planning a or an upgrade from an older version?
ESXi 6.5, 6.7, and 7.0 (Check the Cisco Compatibility Matrix for specific SU sub-versions).
It is strongly recommended to use Cisco PCD for planning and executing upgrades. Step-by-Step Upgrade Guide (11.x to 12.5) Cisco Cucm 12.5 Download
If you downloaded an upgrade ISO, it may not be bootable by default. Ensure you download the specific bootable version if you are performing a bare-metal virtual machine installation.
Cisco Unified Communications Manager 12.5 (formerly Cisco CallManager) is the engine behind Cisco’s enterprise-level IP telephony systems. It handles call routing, device registration, and signaling for voice and video endpoints. Are you planning a or an upgrade from an older version
CUCM communicates directly with the Cisco Smart Software Manager (CSSM) cloud portal.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Step-by-Step Upgrade Guide (11
Forward and reverse DNS lookup zones must contain valid records for your CUCM Publisher and Subscribers. Mismatched DNS records will cause the installation to fail.
You must have a valid Cisco Service Contract (like SmartNet) associated with your Cisco.com ID to access the software. Virtualization Platform: