Help > Functions and Applications > Do not disturb
Do not disturb
If Do-not-disturb is enabled, inbound calls are rejected.
The caller hears the busy tone.
The Do not disturb function has no effect on outgoing calls and callbacks.
Configuration
Web interface: 
•Telephony > Call signalling > Do not disturb
*Details about the settings are in Call signalling
•Function keys> Choose a key >Function:Do not disturb
*Details about the settings are in Function keys
Phone: 
•Settings > Telephony > Do not disturb
*Details about the settings are in Telephony
•Settings > Function keys> Choose a key >Choose a function:Do not disturb
*Details about the settings are in Function keys
Provisioning: 
*Details about provisioning this function in the Auerswald DokuWiki at Setting and Key