Core Issue
Normally, an upgrade Cisco CallManager has no effect on the corporate directory, so and unknown issue has occurred.
Resolution
In this case, the users listed in the corporate directory were not in the default Organizational Unit (OU). The Cisco CallManager administrator had created a custom OU for the users. During upgrades only the default OU is transferred over to the new version, and that container is OU=USER. The resolution of the issue is to transfer the list of users manually, rather than relying on the Cisco CallManager installation scripts to handle the action.
For more information, refer to these documents:
Problem Type
Call control software (CallManager, CallManager Express, ICS7750, SRST, SS7 call agents)
Call Control
CallManager
CallManager Features
Directory access
Common Software and Product Issues
Problems after an upgrade
Failure Type
Missing information: feature, item, file, field, number, parameter, data, settings, configuration, option, etc.
User Features
Corporate/global directory
CallManager Versions
CallManager 3.2