AASTRA 4223 Professional for BusinessPhone User Guide - Manual (Page 124)

Installation
BusinessPhone — Dialog 4223 Professional / Dialog 3213 124
Wall mounting handset hook
The phone can be wall mounted without using a special console.
Useful for instance in conference rooms or public areas.
1 Use a screwdriver to remove the handset hook.
2 Turn the hook upside down and insert.
3 Use a screwdriver to remove the two plastic covers.
4 Drill wall holes according to measure.
5 Mount screws according to measures and attach the
phone.