3Com NBX 2101 - Manual (Page 59)

Using a Headset 59
Ending Calls When Using a Headset
To end calls when using a headset with an NBX Business Telephone, press
Release button on your telephone.
To end calls when using a headset with an NBX Basic Telephone, press
Feature button and 111.
Certain brands of headsets have a power-saving mode that prevents the
telephone from ringing for one or more calls when both of these
circumstances are true:
1 The headset amplifier buttons for Mute and On are both set to On, and
2 The handset is off the phone for a long time (for instance, overnight).
Because it may take a few minutes for your headset to return from the
power-saving mode to the active mode, when calls first come in, your
telephone may not ring until the headset has returned to active mode.
If you do not plan to use the headset for a long time, 3Com recommends
that you set the mute and headset buttons on the amplifier to Off and
hang up the handset on your telephone. When you are ready to receive
calls again, set up the headset for receiving calls:
1 Pick up the handset on your telephone.
2 Put on the headset.
3 Press the mute and headset buttons on the amplifier to On.