Basic Functions
Denying/Blocking a Call
When the snom 220 signals an incoming call, you have the option to
deny the call with 
.
If you decide to press 
, the caller will be placed on the deny list and
will always be denied automatically. If 
is not displayed, it is switched off in the settings. You can enable it again via the web interface (“Deny All” feature).
Adjusting the Volume
While making a call, you can use the 
and the 
keys to the right of the display to increase or lower the volume.
Key mapping:
Reduces the volume in steps.
Increases the volume in steps.
Sets the volume and returns.
ENTER
Returns without setting the volume.
CANCEL
Mute / Unmute
To mute the microphone during a call, press the softkey “Mute” or 
.
Press the softkey “Unmute” or 
to enable the microphone again.
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