This topic provides the system-level information required to upgrade contact center components from previous Unified Communications releases to Release 6.1(1).
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Preparing for Your System Upgrade
Planning Your System Upgrade
This topic provides an overview of the upgrade process for contact center components, the software releases that are involved in the upgrade process, and the different upgrade strategies that can be used based on the size of the customer network.
Note There may be more than one upgrade path based on the software deployed in your specific environment. For more information, see System Upgrade Paths 
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This topic contains the following sections:
•Cisco Unified Communications System Overview
To ensure that you have completed upgrade prerequisites for additional approach and dependencies, see Preparing for Your System Upgrade.
For information about the upgrade order and process for contact center components, go to Performing Your System Upgrade.
Preparing for Your System Upgrade
This topic discusses information to be aware of before the actual upgrade process such as the general upgrade approach for the different contact center components, upgrade release versions of components involved in the upgrade, and release version compatibility.
This topic contains the following sections:
When your upgrade plan is in place and you are ready to upgrade, go to Performing Your System Upgrade on the Optimize tab.