Samsung SGH-S400i User Manual page 29

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Call functions
3. Press <Options> and select End held call to end
the call on hold.
4. To end the current call, press [
Transferring a call
You can transfer the currently active call to a caller on
hold, if your network supports it. With this option, the
two callers can talk to each other, but you are
disconnected from the call.
Press <Options> and select Transfer.
Using an external speaker
Use an optional external speaker to talk and listen
with the phone a short distance away. First, you must
plug a speaker into the phone.
Using a Bluetooth headset
Use an optional Bluetooth headset to talk on the
phone without holding the phone to your ear. To use
this feature, you first need to register your headset
and connect it to the phone.
Press <Options> and select Switch to headset or
Switch to phone.
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Using the menu options
You can access Menu mode and use menu functions.
During a call, some menu functions are not
available.
Press <Options> and select Menu.
Switching off the microphone
You can temporarily switch off your phone's
microphone so that the person on the phone cannot
hear you.
Press <Options> and select Mute or Unmute.
Sending a sequence of DTMF tones
Dual tone multi-frequency (DTMF) tones are the tones
used in phones for tone dialling.
You can send DTMF tones as a group after entering the
entire number you need to send or retrieving a
number from Phonebook. This feature is helpful for
entering a password or an account number when you
call an automated system, like a banking service.
(Mute mode)

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