AASTRA 4225 Vision for MX-ONE (TSE) User Guide EN - Manual (Page 92)

Settings
Dialog 4223 Professional/Dialog 4225 Vision 92
Settings
Programming of function keys
Frequently used features and phone numbers can be programmed on the
function keys for easy access. When you want to use the feature, just
press the key. Certain features must be preprogrammed by your system
administrator. Both phone numbers and feature codes can be
programmed on a function key.
Enter programming mode
Dialog 4223 Professional:
Program Press (see display).
If
Program
is not shown, press
more...
until it appears.
Select Press (see display).
Continue with “Program or change a feature”.
Dialog 4225 Vision:
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Select Program in the top menu (see display).
Select Press to select
Programming of keys
(see display).
Continue with “Program or change a feature”.