Polycom IP 320 - Manual (Page 15)

Getting Started with Your SoundPoint IP 330/320 Phone
1 - 7
To attach the base as a wall mount:
1. Place all cords in the recessed area below the modular jacks.
2. On the back of the phone, remove the key located behind the hook switch
and reposition it so that the end tab (at a 45 0 angle) is facing up.
3. Using wall anchors (not included), fasten the base stand with the
mounting tab facing up.
4. Align the base stand tabs with their corresponding insertion points on the
phone, and then snap the phone into place (as shown).