LG F7100 User Manual page 128

In call Menu
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
Hold & Answer.
You can end the current call and answer the waiting call by selecting
< [Menu], then End & Answer.
1-5 Rejecting an Incoming Call
When not in a call you can reject an incoming call without answering
it by simply pressing the E [End].
When in a call you can reject an incoming call by pressing the <
[Menu] key and selecting Multiparty/Reject or by pressing E [End]
key.
1-6 Muting the Microphone
You can mute the microphone during a call by pressing the <
[Options] key then selecting Mute. 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.
1-7 Switching DTMF Tones on During a Call
To turn DTMF tones on during a call, for example, to allow your
handset to make use of an automated switchboard, select <
[Options], then DTMF On. DTMF tones can be turned off the same
way.
1-8 Calling up Messages and SIM Tool kit main menu
The Messages and SIM Tool kit main menu options can be reached
from the in-call menu by selecting < [Options]. SIM Tool kit menu is
shown only when SIM in the handset supports SIM Tool kit service.
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