Connecting a headset
To connect a headset to your Caller ID telephone at Indiana University Bloomington, you must enable enable headset mode. To do so:
- Press the Set Options key.
- Press # to enter the setup list.
- Press the arrow up/down key to number 1, or press 1 to go
directly to the item.
- Press 1 to toggle the headset mode between enabled and disabled.

