The StarLeaf Phone 2105 allows you to connect a headset to use instead of the handset or the speakerphone. StarLeaf recommends Plantronics headsets with U10P type cable or Sennheiser headsets with CSTD 24 type cable.

The figure below shows the location of the headset connector on the rear of the phone:

If you want to use a headset from a manufacturer other than Plantronics or Sennheiser, be aware that the headset connector on the rear of the phone accepts any headset with a 4P4C connector that has the following pinout:

To use the headset, connect it to the headset port and press to make a call. If you press while on a call with the headset in use this ends the call.