LG G7110 User Manual page 120

To answer an incoming call when the handset is ringing, simply
press the S [Send] key.
The handset is also able to warn you of an incoming call while you
are already in a call. A tone sounds in the earpiece, and the display
will show that a second call is waiting. This feature, known as Call
Waiting, is only available if your network supports it. For details of
how to activate and deactivate it see [Menu 5-4-4].
If Call Waiting is on, you can put the first call on hold and answer
the second, by pressing S [Send] or by selecting < [Answer],
then .
You can end the current call and answer the waiting call by
selecting < [Menu], then
.
When not in a call you can reject an incoming call without answering
it by simply pressing the E [End] or
for a long time when the flip
is closed. With folder closed, you can reject a call simply keeping
the EZ side key pressed for a while.
When in a call you can reject an incoming call by pressing the <
or by pressing E
[Menu] key and selecting
[End] key.
You can mute the microphone during a call by pressing the <
[Options] key then selecting . The handset can be unmuted by
pressing the < [Unmute].
When the handset is muted, the caller cannot hear you, but you can
still hear them.
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