switel DCT 487 Mode D'emploi page 179

Telephoning
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Conference calls
An external call can be transferred to another internal handset for a conference
call.
HS1: , + or ,
Call internal , , e.g.: 2
HS2: ƒ
HS1: , + or ,
Conference
HS1 / HS2: ‹
Adjusting the receiver volume
The volume can be adjusted to one of 5 settings during a call.
+ or ,
Talk time display
The duration of a call is displayed in hours, minutes and seconds during the call.
Handsfree
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This function is used to listen to the caller via the loudspeaker.
™
™
Muting the microphone in the handset
The microphone in the handset can be activated and deactivated during a tele-
phone conversation.
C
C
152
, 
Dial the internal call number of the
handset required during the external call
Take the internal call on the other
handset
Start the conference
End the conference
Select the required volume
Activate handsfree mode
Deactivate handsfree mode
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Deactivate the microphone (muting
function activated)
Activate the microphone