Panasonic KX-NS500 User Manual page 204

1.9.2 Refusing Incoming Calls (Do Not Disturb [DND])
•
* This step can be omitted.
To set and clear FWD/DND for all calls
KX-UT113/KX-UT123/KX-UT133/KX-UT136/KX-UT248
While on-hook
Press the fixed
FWD/DND button.
204 User Manual
: FWD/DND off
FWD/DND Off
OR
Do Not Disturb : DND on
Press UP or DOWN with
the Navigator Key
to select the desired item.
Press ENTER to set.
A confirmation tone will
be heard.