LG C3320 - Manual (Page 28)

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In-Call Menu
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.
DTMF tones while calling
To switch on DTMF tones while calling (e.g. to use the
phone with an automatic switchboard) press the key
[Options] followed by Send DTMF – DTMF on. Select
DTMF off to disable DTMF tones. DTMF tones are
normally on.
The conference service provides you with the ability to
have a simultaneous conversation with more than one
caller, if your network service provider supports this
feature. A conference call can only be set up when you
have one active call and one call on hold, both calls
having 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 callers in a conference call are five. Once
started, you are in control of the conference call, and
only you can add calls to the conference call.
n Note This service is not available on your O2 Pay & Go
mobile.
Making a Second Call (Network Dependent)
You can get a number you wish to dial from the Address
Book to make a second call. Press the Right soft key to
select Contacts.
n Note This service is not available on your O2 Pay & Go
mobile.
Conference Calls (Network Dependent)