This article provides a comprehensive look at how to legally obtain CUCM ISOs, the differences between various versions (such as 11.5, 12.5, and 14), licensing requirements, and best practices for installing the software in a virtualized lab.
to request a specific "Special File Access" if you have an active support contract. Learning/Lab Use cucm download iso
| Version | Release Date | End of Support | ISO File Naming Example | | :--- | :--- | :--- | :--- | | | 2024 | 2028+ | UCM_15.0.1.10000-26.iso | | CUCM 14 | 2021 | 2026 | UCM_14.0.1.10000-23.iso | | CUCM 12.5 | 2019 | 2025 (Limited) | UCM_12.5.1.10000-22.iso | | CUCM 11.5 | 2016 | End of Support (Do not use) | UCM_11.5.1.10900-1.iso | This article provides a comprehensive look at how
: Downloadable ISOs from the website are typically non-bootable upgrade images . For a fresh installation, you may need to order physical media or work with Cisco TAC to get a bootable version published to your account. For a fresh installation, you may need to
# Supported CUCM Versions SUPPORTED_VERSIONS = "14.0": "SU1, SU2", "12.5": "SU1-SU8", "11.5": "SU1-SU10", "10.5": "End-of-Life"