NEC SL1000 Features And Specifications Manual page 556

SL1000
Operation
To adjust the volume of incoming ringing and splash tone:
1. If the telephone is idle, press Speaker and dial 829 . If the telephone is ringing, skip to Step 2.
2. Press VOLUME
To adjust the volume of ringing incoming Paging announcements, Handsfree, the
handset or Background Music:
1. Press VOLUME
V
The feature must be active to change the volume. Pressing the volume keys when the telephone is idle ad-
justs the display contrast.
1-548
or VOLUME .
or VOLUME .
ISSUE 1.0
Volume Controls