AASTRA 4222 Office for BusinessPhone User Guide EN - Manual (Page 105)

105 BusinessPhone – Dialog 4222 Office / Dialog 3211 & 3212
Installation
Installation
Dialog 4222 Office
Install cables
You can put the cable to the handset in the notch underneath the
telephone. The cable to the exchange has to be plugged in LINE
and the handset cable has to be plugged in HANDSET.
Change cables
Use a screwdriver to unlock the stop.
Handset cable to the left Handset cable to the right