AASTRA 4225 for MX-ONE Telephony Switch - Manual (Page 115)

115 Dialog 4223 Professional/Dialog 4225 Vision
Settings
Display contrast
You can adjust the contrast for the display.
Dialog 4223 Professional:
PhoneSet Press (see display).
If
PhoneSet
is not shown, press
more...
until it appears.
Select Press (see display).
Down or Up Press to frame
Display Contrast
(see display).
Select Press (see display).
- or + Press repeatedly to adjust the contrast (see display).
Save&Exit Press to save the setting and exit the menu (see display).
Note: To exit the menu without saving the changes, press
Save&Exit
before you press any of the adjustment keys.
Dialog 4225 Vision:
Å
Select PhoneSet in the top menu (see display).
Down or Up Press to frame
Display Contrast
(see display).
Select Press (see display).
- or + Press repeatedly to adjust the contrast (see display).
Save&Exit Press to save the setting and exit the menu (see display).
Note: To exit the menu without saving the changes, press
Save&Exit
before you press any of the adjustment keys.