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 thecurrent setting (1-7).Contrast ControlPress or while your 22-button or 34-button dis-play telephone is idle to adjust the display contrast. There are 7steps in this adjustment. Note that Contrast Control is not avail-able if you have a Super Display telephone.Volume and Contrast Control137