AASTRA 4223 Professional for BusinessPhone User Guide - Manual (Page 101)

101 BusinessPhone — Dialog 4223 Professional / Dialog 3213
Settings
Program a function
How to program a function on key A.
Note: Some functions can also be programmed as
Individual Abbreviated Numbers, see section “Abbreviated
Numbers” on page 27.
prog
Press (see display).
key
Press (see display).
_ A Ô
Press the desired programmable key.
change
Press (see display).
forward
Select Function code (see display).
See section “Function codes and required data” on page 103.
enter
Press (see display).
z
Enter associated number.
See section “Function codes and required data” on page 103.
store
Press (see display).
Continue with section Select Ringing Character.
Or: í
Press to finish programming.
After approximately 10 seconds, the Function key is active.