NEC DS2000 Feature Handbook page 84

Distinctive Ringing
2. Press
3. To set up Key Ring Override, press
4. Select the type of key you want to program.
– The ring type you select in the next step will be
– After you make your selection, the keys of the chosen
76
RING
. You see:
assigned to the key you press in this step.
type will illuminate.
KEY
. You see: