Mitel 5330 and 5340 IP Phones User Guide
To adjust the Ringer Volume while the phone is ringing:
∙Press 
(UP) or 
(DOWN).
Notes:
∙If the phone is in talk state, this action adjusts the volume of the handset, headset or speaker.
∙If the phone is idle, this action adjusts the contrast.
To adjust the Ringer Pitch while the phone is idle:
1.Press Superkey (must be programmed to a key).
2.Press the No softkey until "Ringer Adjust?" appears.
3.Press “Ring Adjust”.
4.Press “Ringer Pitch”.
5.Press 
(UP) or 
(DOWN).
6.Press Superkey.
Enable a Screen Saver (5340 only)
You can program your screen saver to turn on after a specific time period of inactivity on your phone.
To enable a screen saver:
1.Press the blue Menu key 
.
2.Press Settings.
3.Press Screen Saver.
4.Select the inactivity time, which will activate the backlight switch to turn off.
5.Press the checkbox opposite Display image if you wish the screen saver to be displayed. If you do not press this checkbox, only the set backlight is turned on.
6.Use the Brightness options to adjust the Brightness of the screen saver, if necessary.
7.Press Save.
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