Receiving interphony calls 
You can answer a call without lifting the handset. 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  
•   (in idle state)   Corresponding LED lights up.  
When your caller hangs up, interphony mode remains active. 
To deactivate  
•   (in idle state)   The corresponding LED goes out. 
Interphony can be disabled by the administrator.  
  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.  
•  During a conversation. 
•  ¤MFcode 
•  Enter DTMF code. 
•  ×MFcode To deactivate the feature. 
The function is automatically cancelled when you hang up. 
 
Depending on the system configuration, the DTMF can be activated by default. In this case, you can 
send DTMF code directly by dialing it during the conversation. But if you want to make a second call 
during the conversation, you have to deactivate DTMF code before dialing the number. 
  Mute, so that your contact cannot hear you 
You can hear your contact but he/she cannot hear you: 
 From the set  
•  During a conversation. 
•   Disable microphone   The mute key blinks  . 
•   Resume the conversation   The mute key no longer blinks  . 
 From the Bluetooth® handset (Bluetooth® wireless handset)  
•   Press the handset volume/mute key (long press)   The mute key blinks. 
•   Press the handset volume/mute key (long press)   Resume the conversation   The mute 
key no longer blinks 
 From the headset 
•  Use the mute key of the headset, if there is one, to disable headset microphone or to resume the 
conversation