LG CU500 - Manual (Page 30)

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In-Call Menu
Muting the Microphone
You can mute the microphone during a call by pressing
the left soft key [Mute]. The handset can be unmuted
by pressing the left soft key [Unmute]. When the
handset is muted, the caller cannot hear you, but you
can still hear the caller.
Using the Speakerphone
You can use the integrated Speakerphone during a call
by pressing the
key. The loudspeaker is
automatically deactivated when you end the call.
n
Warning
Due to higher volume levels, don’t place the phone near your
ear while the speakerphone is enabled.
Conference Calls
The conference service provides you with the ability to
have a simultaneous conversation with more than one
caller. The conference call feature can be used only if
your network service provider supports this feature. A
conference call can only be set up when you have one
call active and one call on hold, meaning both calls
must have been answered. Once a conference call is
set up, calls may be added, disconnected or separated
(that is, removed from the conference call but still
connected to you) by the person who set up the
conference call. These options are all available from
the In-Call menu. The maximum number of callers in a
conference call is five. Once started, you are in control
of the conference call, and only you can add calls to
the conference call.