This is the complete error message in application event log:
Error: kCCMConnectionError - No CMI Connection with Cisco CallManager.CallManager Name: NO_SUCH_NAME (Primary) can't be connected. App ID: Cisco Messaging Interface. Cluster ID: StandaloneCluster. NodeID: 192.168.x.xExplanation: CMI cannot establish connection with Cisco CallManager. Recommended Action: Check the address/status of Cisco CallManager and the network.
The Cisco Messaging Interface (CMI) allows you to use an external voice mail system with the Cisco CallManager.
The voice mail system must meet these requirements:
If you use CMI, then it should only reside on a single Cisco CallManager within a cluster. You cannot have two CMI applications connected to the same voice mail system that run at the same time.
It is better to turn this service off if you do not use CMI.
From the Cisco CallManager serviceability page, choose Tools > Control Center and stop the Cisco Messaging Interface. Other functions are not disrupted.
Refer to these documents for more information: