H2 DeskPhone   
H2P DeskPhone 
 
 
 
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⚫  Set the Callback key through the web interface: 
Log in to the telephone page, enter the [Function Key] >> [Function Key] page, select the function 
key, set the type as Key Event, and set the subtype as Callback, as shown in the figure below: 
 
Figure 24 - Set the callback key on the web page 
8.7 Mute 
You can turn on Mute mode during a call and turn off the microphone so that the local voice is not heard. 
Normally, Mute mode is automatically turned off at the end of a call. You can also turn on Mute at any time 
and mute the ringtone automatically when there is an incoming call. 
Mute mode can be turned on in all call modes (handset, headphones or hands-free). 
8.7.1  Mute the call 
⚫  During the conversation, press the Mute button    on the telephone. The Mute button on the telephone 
will turn on the red light. 
The Mute icon is displayed in the call interface, as shown in the figure below: 
 
Figure 25 - Mute the call 
⚫  Cancel Mute: Press   Cancel Mute on the telephone again. The Mute icon is no longer displayed on 
the call screen.