AASTRA 4220 Lite for BusinessPhone User Guide EN - Manual (Page 26)

Outgoing Calls
BusinessPhone – Dialog 4220 Lite / Dialog 3210 26
Dial-by-Name
You can program and activate directory numbers (extensions and
Common Abbreviated Numbers) on the programmable keys. If you
have programmed a number on a programmable key, you just have
to press this key to call the desired person. u
Lift the handset.
Michael P.
Ô
Press to make a call (pre-programmed).