Use the Serviceability GUI to activate, start, and stop Cisco Unified Communications Manager and IM and Presence services. Activation turns on and starts a service. You must manually activate the feature service for all features that you want to use. For service-activation recommendations, see topics related to service activation.
 Note | If you try to access a Cisco Unified Communications Manager server from an IM and Presence node or vice versa, you may encounter the following error: "Connection to the Server cannot be established (unable to access Remote Node)" . If this error message appears, see the Cisco Unified Communications Operating System Administration Guide, Release 10.0(1). |
After you activate a service in the Service Activation window, you do not need to start it in the Control Center - Feature Services window. If the service does not start for any reason, you must start it in the Control Center - Feature Services window.
After the system is installed, it does not automatically activate feature services, You need to activate the feature service to use your configuration features, for example, the Serviceability Reports Archive feature.
Cisco Unified Communications Manager and Cisco Unified IM and Presence Service only: If you are upgrading Cisco Unified Communications Manager, those services that you activated on the system before the upgrade automatically start after the upgrade.
After you activate feature services, you can modify service parameter settings using the administrative GUI for your product: