Cisco Unified Communications -- Problems During System Upgrades

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This information applies to all Cisco Unified Communications System releases.

System-Level Upgrade Instructions

Uncertain about the order in which to upgrade the various components in a system solution? The recommended and tested sequences for upgrading system components are presented in separate System Installation and Upgrade Manuals for contact center and IP telephony applications. These manuals are available for each major and minor Unified Communications System release at

Cisco Unified Communications System Documentation.

Version Incompatiblity/Mismatches

To determine the software versions for each Cisco Unified Communications component that were tested together during system-level testing, see the Unified Communications Compatibility Tool.


Have you had experience troubleshooting Cisco Unified Communications equipment? Can you expand on this topic? Please contribute to this wiki and share the tools and techniques you used by sending E-mail to sysdocwiki@cisco.com. Guidelines for submitting content are available on the About DocWiki pages.

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