3Com 3102 Manual page 63

If you enable Do Not Disturb while one or more calls are ringing, the
pending calls are sent to your call coverage point and Do Not Disturb
is enabled for all subsequent calls.
If your phone is part of a call pickup group (see
no other phone in the pickup group can retrieve a call that comes in
directly to your phone. The incoming call goes immediately to the call
coverage point.
If you are a Hunt Group member and you enable Do Not Disturb,
personal (non-Hunt Group) calls go to your call coverage point.
However, Hunt Group calls always ring on a member's phone,
regardless of the Do Not Disturb setting.
If your telephone is part of a bridged extension, see
Bridged Line Calls
To activate Do Not Disturb:
1 Press the Do Not Disturb Access button on the phone. The red light is lit
next to the Do not Disturb button (Model 3102 only).
If you phone does not have a Do Not Disturb button, press Feature +
446.
Your telephone is now in Do Not Disturb mode. The display panel shows
DND.
2 To disable Do Not Disturb mode, repeat step 1. The DND message
disappears from the display panel and the red light goes out.
for additional information.
Activating Do Not Disturb
Directed Call
Do Not Disturb and
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Pickup),