Avaya NN43113-101 - Manual (Page 136)

Configuring the Avaya 1140E IP Deskphone
136
Your Bluetooth wireless technology headset is no longer paired with your
IP Deskphone, and you can use the wired headset. To use the wireless
headset again, you must perform the pairing and activation procedure.
11. Press the Enter key.
Your Bluetooth wireless technology
headset is unpaired and removed from
the
Paired item list.