Samsung GSM1800 - Manual (Page 50)

Options During a Call
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The current call is placed on hold and the call on
hold is reactivated so that you can continue
conversing with the other person.
When you want to finish, end each call normally by
pressing the
key.
Switching the Microphone Off (Mute)
You can temporarily switch your phone’s
microphone off so that the other person on the
phone cannot hear you.
Example: You wish to say something to another
person in the room but do not want the
person on the phone to hear you.
To switch the microphone off temporarily:
1. Press the Options soft key.
2. Press the Down key to highlight the Mute
option.
3. Press the OK soft key.
The other person can no longer hear you.
To switch the microphone back on:
1. Press the Options soft key.
2. If necessary, press the Down key to highlight the
Unmute option.
3. Press the OK soft key.
The other person can hear you again.