Install the accessory 
By default, the audio jack of your telephone can be used to connect a headset, hands-free kit or 
loudspeaker. A wideband headset can also be installed for optimized sound quality. 
When you plug the jack accessory in the jack, a popup asks you for the type of accessory:  
•  Headset 
•  Handsfree 
•  Loudspeaker 
 
If another headset is already connected (USB or Bluetooth® if available), a popup asks you to select 
your preferred headset. 
A specific icon is displayed in the status bar:  . 
 
If necessary, you can also select the accessory type in the audio settings:  
•   Or  (long press)   Audio 
•  Jack config. 
•  Headset / Handsfree / Loudspeaker   Select the type of device plugged into the jack. 
•   
Your phone is equipped with a 3.5 mm, 4 pole jack. If your device is not compatible, you can use a 3 
pole to 4 pole jack adapter. 
: This icon is only available on the 8078s Premium DeskPhone. 
 Activate the ringing into the device 
When you receive an incoming call, you can configure your desk phone to alert you of the incoming call 
directly via the connected device. In idle state, you can hear the ringing via the connected device 
(headset for example) in addition to the phone ringing. If you are in conversation, the phone alerts you of 
the incoming call by a signal via the connected device (the signal depends on the configuration of the 
system and can be one beep or three beeps for example). 
•   Or   (long press)   AudioHub 
•  Jack   EHS 
•  Jack ring: select this option to be alerted of an incoming call via the connected device. 
 Use a device compatible with Android mobile 
If you connect a headset compatible with an Android device, you have to adjust the behavior of your 
phone to use the on-hook/off-hook button of the connected device:  
•   Or   (long press)   AudioHub 
•  Jack   EHS 
•  Android: select this option to use a headset compatible with Android. 
Other buttons except on-hook/off-hook button of the compatible Android device are not supported by the 
phone. 
 Use a wireless DECT headset connected to the jack connector 
Some DECT headsets optimize the battery by pausing the DECT radio when the phone is not in 
communication. In this case, the phone has to give the information to the headset via the jack connector. 
You have to configure the jack connector according to the following: