Samsung 08/2004 - Manual (Page 45)

Call functions
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2. Press the Up or Down key to highlight a
participant and press the Select soft key.
The call ends with that participant, but you can
continue to talk with the other participants.
3. End the multi-party call by pressing the
key.
Using the ear-microphone
With the ear-microphone, you can make or answer
a call without holding the phone.
When you connect the ear-microphone to the jack
at the right side of the phone, the button on the
ear-microphone works as listed below:
To Press
redial the last call the button twice in Idle Mode.
answer a call and hold the button when you
receive the call.
end a call and hold the button when you
have finished the call.