This topic provides links to documentation for you to review the system-level information required to upgrade IPT 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 IPT 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 available 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:
When your upgrade plan is in place and you are ready to upgrade, go on to Performing Your System Upgrade on the Optimize tab.
Preparing for Your System Upgrade
This topic discusses information to review before the actual upgrade process, such as the general upgrade approach for the different IPT 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.