Nokia 6133 User Manual page 23

C a l l f u n c t i o n s
Touch tones — to send tone strings
Swap — to switch between the active call and the call on hold
Transfer calls — to connect a call on hold to an active call and disconnect yourself
Conference — to make a conference call that allows up to five persons to take
part in a conference call
Private call —to discuss privately in a conference call
To change the volume during a call, press the volume up key or the volume down key.
Warning: Do not hold the device near your ear when the loudspeaker is
in use, because the volume may be extremely loud.
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