Customizing Your Phone73call lists.3. Press or to select the desired entry.4. Press the Delete soft key.If you want to use a wired headset, physically connect your headset to the phone andactivate the headset mode for use. For more information on physically connecting aheadset, refer to Phone Installation on page 14.If you want to use a wireless headset, insert the Bluetooth USB dongle into the USB port onthe back of the phone. For more information on using a Bluetooth headset, refer to Bluetoothon page 75.This section provides an introduction to wired headset use.NoteTo activate the headset mode:1. Press on the phone.The HEADSET key LED illuminates solid green when the headset mode is activated.When you press the Answer soft key to answer an incoming call, the call isconnected to your headset automatically. For more information on using theheadset to answer a call, refer to Answering Calls on page 95.With the handset on-hook, enter the desired number and press the Send soft key,the phone will then place a call using the headset automatically. For moreinformation on using the headset to place a call, refer to Placing Calls on page 93.To deactivate the headset mode:1. Press again on the phone.The HEADSET key LED goes out when the headset mode is deactivated.You can use headset in priority when headset prior feature is enabled. This feature isespecially useful for permanent or full-time headset users.If both a Bluetooth headset and a wired headset are connected, only the Bluetoothheadset can be used.