This Upgrade Center includes information about upgrading to Cisco Unified Communication Manager 5.1(1) (Cisco Unified CM, formerly Cisco Unified CallManager) from a Cisco Unified CM 4.x release. This site also provides instructions for installing software patches and upgrade software after you have upgraded to Cisco Unified CM 5.1(1).
To get started with your upgrade, read the Upgrade Overview. Use the Master Installation Checklist to track your completion of other checklists.
To see when this site was most recently updated, click the History link at the top of the window.
Before You Begin
Make sure you or the person doing the installation meets the skills in the Minimum Skills/Knowledge Checklist.