Yealink T21P, Краткое руководство пользователя

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10
Volume Adjustment
• Press during a call to adjust the receiver volume of the
handset/speakerphone/ headset.
• Press when the phone is idle to adjust the ringer
volume.
Ring Tones
1. Press Menu when the phone is idle, and then select Settings > Basic
Settings > Ring Tones .
2. Press or to select the desired ring tone.
3. Press
Save
to accept the change.
Backlight
Backlight options:
• Always On: Backlight is on permanently
• Always Off: Backlight is off permanently
• 15s, 30s, 60s, 120s, 300s, 600s or 1800s: Backlight is turned off
when the phone is inactive after the designated time (in seconds).
To configure the backlight:
1. Press Menu > Settings > Basic Settings > Display > Backlight .
2. Press or to select the desired time from the Backlight Time field.
3. Press Save .