Audioline dect4500 사용자 설명서

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An external call can be connected to a further internal subscriber as a conference 
call. In this way, two handsets can talk to the external caller simultaneously. 

Establish the required connection with the external subscriber. Then press the 
button and the internal number of the second handset required. When the second 

internal subscriber has accepted the call, press and hold the 

 button for 2 

seconds and all three subscribers will be connected together on a conference call. 
The messages INT and EXT will appear in the display. The conference is ended by 
one of the internal participants hanging up. 

With the room monitoring 
feature, you place a handset in 
the required room and activate 
the monitor function. You can 
then call up this handset and 
listen-in to the room without the 
handset ringing. Also in the case 
of an external call, the handset 
concerned does not ring. 

Press the 

 button to enter the right menu level directly. Then press 

 and 

select OFF. Confirm with 

 and exit programming by holding the 

 button 

pressed.

Hold