Chapter 3 Using the Handset Display Buttons 41T7406 Cordless Handset Installation GuideHeadset CompatibilityA headset offers you handsfree operation of your handset when you use a belt clip or leather caseto attach the handset to your belt or carrying case.Headset installationFollow these steps to attach a headset to the handset port.1 Lift up and remove the rubber tab to expose the headset port.2 Insert the headset jack into the headset port.The handset microphone and earphone are disabled when the headset is connected to the headsetport. If you use the headset, use the Options button to answer calls and to use the Options List tocustomize features.When you remove the headset from the headset port, handset operation is enabled automatically.Note: The provide headset compatibility, the Handsfree feature must be enabledin system programming. If Handsfree is disabled, certain call handling featuresmay not work as intended.Note: No audible DTMF tones can be heard through the earpiece when you arewearing a headset with your T7406 handset. Dialpad button pressing is stillreceived normally at the far end.Note: The headset jack has a 2.5 mm opening. An adapter may be required ifyour headset has a 3.5 mm pin.