Restarting a server closes all the processes that are running and starts them again. Restart of server is necessary for the system to reduce the failure that is due to long term running of servers/Services.
Ensure that the restart happens at a time only when the server is being scheduled for maintenance.
There are two ways to restart the Call Manager.
- CLI:
Step1: Login Call Manager through CLI.
Step2: Put the Command “Utils System restart”.

Step3: Press Enter.
2. GUI
Step1: Open Call Manager GUI and navigate to “Cisco Unified OS Administration” in the upper right corner.
Step2: click on Settings -> Version.
Step3: click on reboot.
The best way to restart the call manager is from CLI, because once the server is up you can see the service status of the call manager through the command “utils service list”.