With the QD connection plug, you can choose any headset that supports it and configure it with the connection that fits your device (USB, Jack, 2.5mm, etc.).
You can also disconnect the headset from the QD plug at any time during the call, and the call will automatically be put on hold, allowing you to move away from the phone without removing the headset.
To connect to the telephone device, the corresponding connection cable or amplifier is necessary (not included).