You can turn off all sounds temporarily.
Right-click the Novell Messenger status icon in the notification area, then select Mute.
To turn on sounds again, repeat Step 1.
If you use mute to turn off sounds, they are turned on again the next time you log in to Novell Messenger.
For information about specifying when you are notified by sounds and alerts, see Section 8.15, Specifying When You Receive Sounds and Alerts.