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 be automatically placed on hold, allowing you to move away from the phone without removing the headset from your head.
For connection to the telephone device, the appropriate connection cable or amplifier is required (not included).