2.9  Requesting automatic callback if internal number is busy  
  Internalnumberbusy 
  Call back  Callback request acknowledged  
   
Automatic callback is not available if the set of your caller is free or if you are put on hold when the 
set is busy  
2.10 Cancelling an automatic callback  
  When your phone rings  
  Call back  Cancellation of callback request acknowledged  
Canceling the callback request is only possible when the caller you tried to reach released the line.  
2.11 Receiving intercom calls  
You can answer a call without lifting the receiver. When you receive a call, you are automatically 
connected in hands-free mode. The identity of the caller is displayed on the screen. 
To activate -Terminal idle:  
   Corresponding LED lights up  
When your caller hangs up, interphony mode remains active. 
To deactivate -Terminal idle:  
   The corresponding LED goes out  
2.12 Sending DTMF signals 
During a conversation you sometimes have to send DTMF signals, such as with a voice server, an 
automated attendant or a remotely consulted answering machine. 
By default during a communication, your telephone is configured to send codes in voice frequency: 
enter these codes directly using the keys on your telephone. For more information regarding this 
configuration, contact the person in charge of your installation. 
  During a conversation  
  Enter DTMF code  
2.13 Mute, so that your caller cannot hear you  
You can hear your caller but he/she cannot hear you:  
From the set  
  During a conversation  
   Disable microphone   The key lights up  
   Resume the conversation   The key is no longer lit  
From the Bluetooth® receiver 
   Press the handset volume/mute key (long press)