You can use wired as well as wireless headsets with the phone.

• Wired headsets
  
  If you want to use a wired headset, connect it to the RJ audio jack labelled .
  
  Note: If both a wired and a wireless headset are connected to the phone, incoming calls will go to the wireless headset.
  
  
• Wireless headsets
  
  
  • Connecting the base station of your headset via the EHS Adapter.
    
    
    • Connect the EHS to the connector labelled EHS .
      
      

• Connecting the headset to the phone via a Bluetooth-compatible adapter.

  Insert the Headset BT adapter into the USB port of the phone. See also the manual of the headset.

Note: The default settings for USB headsets are VID=0a12:PID=100d:HOOK=38/1.

- If you are using a different headset, enter the parameters of the headset manually on the phone's web interface at > Advanced > Audio > text field of Audio parameters. Click the question mark to find out which parameters you need to use for your respective headset.