Optional accessories / 49
Headset installation
Follow 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.
Note: The headset jack has a 2.5 mm opening. An adapter may be required if your headset has a 3.5 mm pin.
The handset microphone and earphone are disabled when the headset is connected to the headset port. If you use the headset, use the Options button to answer calls and to use the Options List to customize features.
When you remove the headset from the headset port, handset operation is enabled automatically.
T7406 Installation Guide