NEC DS1000 Feature Handbook page 59

7. When you see:
– Dial
– Dial
8. Press
To select a new default Ring Tone Set for your super dis-
play telephone:
1. While your phone is idle, press
Distinctive Ringing
(for yes) or confirm your selection, or
9
(for no) to exit without making a selection.
6
to exit.
. You see:
PROGRAM
53