User's Manual

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 Set the callback key through the web interface:
Log in the phone page, enter the [Function Key] >> [Side Key] or [Function Key] >> [Function Key]
page, select the function Key, set the type as the function Key, and set the subtype as the callback, as
shown in the figure:
Picture 26 - Set the callback key on the web page
4.7 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 on any screen
(such as the free screen) and mute the ringtone automatically when there is an incoming call.
Mute mode can be turned on in all call modes (handles, headphones or hands-free).
4.7.1 Mute the Call
 During the conversation, press the mute button on the phone: the mute button on the phone will turn
on the red light.
Red mute icon is displayed in the call interface, as shown in the figure:
Picture 27 - Mute the call
 Cancel mute: press cancel mute on the phone again. The mute icon is no longer displayed in the call
screen. The red light is off by mute button.
4.7.2 Ringing Mute
 Mute: press the mute button when the phone is in standby mode: The top right corner of the phone