Mute/unmute the microphone, 1 press options, 2 scroll to mute, then press select – Nokia 6590i User Manual
Page 116: 3 to unmute the microphone, press unmute, Make a conference call, 1 place a call to the first person, 2 press options and scroll to new call, 4 after the other party answers, press options, 5 scroll to conference, then press select, 7 to end the conference call, press

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Advanced calling features
10
Mute/unmute the microphone
You can mute and unmute your phone’s microphone while a call is in
progress. The difference between mute and hold is that mute lets you
hear the other caller.
1
Press Options.
2
Scroll to Mute, then press Select.
3
To unmute the microphone, press Unmute.
Muting and unmuting also affects the microphones of any accessories
connected to the phone.
Make a conference call
This network service allows you to make conference calls with your phone.
Check with your service provider for details.
1
Place a call to the first person.
2
Press Options and scroll to New call.
3
Press Select, recall or dial the number of the next party you want to
include, then press Call.
4
After the other party answers, press Options.
5
Scroll to Conference, then press Select.
6
To add other parties to the call, repeat steps 2 through 5.
Note: Check with your service provider for availability.
7
To end the conference call, press
.
HAVE A PRIVATE CONVERSATION WITH A PARTICIPANT
1
While in a conference call, press Options.
2
Scroll to Private call then press Select.
A list of the participants appears.
3
Scroll to the person you want to speak with, then press OK.
The other participants can continue talking with each other.