LG T5100 User Manual page 152

Answering an incoming call
To answer an incoming call when the handset is ringing, simply
press the S key. The handset is also able to warn you of an
incoming call while you are already on 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 Call
waiting [Menu 9-2-4] on page 104.
If Call waiting is activated, you can put the first call on hold and
answer the second, by pressing S or by selecting left soft key,
then Hold & Answer. You can end the current call and answer the
waiting call by selecting left soft key and then End & Answer.
Rejecting an incoming call
You can reject an incoming call without answering by simply
pressing the E key.
During a call, you can reject an incoming call by pressing the left soft
key [Menu] key and selecting the Conference / Reject or by
pressing the E.
Muting the microphone
You can mute the microphone during a call by pressing the [Menu]
key then selecting Mute on. The handset can be unmuted by
selecting Mute off. When the handset is muted, the caller cannot
hear you, but you can still hear them.
Switching DTMF tones on during a call
To turn DTMF tones on during a call, press the left soft key, and then
select DTMF on. DTMF tones can be turned off the same way.
DTMF tones allow your phone to make use of an automated
switchboard.
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