NEC DS1000 - Manual (Page 211)

3. Press the key for the type of volume you want to adjust:
– RING = Ringing
– OFF-HK RING = Off-hook ringing
– PAGE = Page announcements (incoming)
You see (ringing shown):
4. Press or to adjust the selected volume.
– The number to the right of the display indicates the
current setting (1-7).
Contrast Control
Press or while your 22-button or 34-button dis-
play telephone is idle to adjust the display contrast. There are 7
steps in this adjustment. Note that Contrast Control is not avail-
able if you have a Super Display telephone.
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Volume and Contrast Control
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