NEC DS1000 Feature Handbook page 81

From the displayed choices:
INTERCOM
– Press
Intercom ringing. (To make your Intercom calls ring,
use the
#VA
RING GROUP
– Press
– Press
Park, and Transfer Recall ringing.
RING "A"
– Press
the sound of the Type A, B or C ringing. You'll use Type
A, B and C ringing when setting up Extension Override
(page 74) and Key Ring Override (page 78).
DEFAULT
– Press
setups (1-3) and cancel your custom settings.
4. When you select a ringing option in the previous step,
your phone "plays" the setting and displays your choice.
– For example, if you press
Intercom ringing, you see:
Distinctive Ringing
to change the sound of your
User-Programmable Feature.)
to change your Ring Group ringing.
RECALL
to change the sound of your Hold,
RING "B"
,
to select one of the 3 default ringing
RING "C"
, or
INTERCOM
to change
to change
73