AASTRA 4223 Professional for BusinessPhone User Guide - Manual (Page 36)

During Calls
BusinessPhone — Dialog 4223 Professional / Dialog 3213 36
From handsfree to handset
You have an ongoing handsfree conversation. u
Lift the handset.
Conversation via the handset.
Mute
You have an ongoing conversation.
É
Press to switch the microphone on or off.
When the lamp lights, the caller will not be able to hear the
conversation in your room.
Inquiry
During an ongoing conversation you wish to make an inquiry to an
internal or external party.
Inquiry
Ô
Press.
Or:
Line 2
Ô
Press Line 2.
The first call is put on hold (the lamp flashes slowly).
z
Enter the number of the third party.
When the third party answers you can switch between the calls,
create a Conference and end one of the calls.
í
Press to end the Inquiry call.
The second call is disconnected.
Line 1
Ц Ф
Press to retake the first call.
You are now connected to the first party.