3) Push or hammer screw anchors into the drilled holes, then insert 2 screws,
as shown below
：
4) Insert the tabs on the wall mount bracket into the slots on the back of IP phone.
And then slide the wall mount bracket to right, as shown below:
5) Pull the hookswitch tab in the handset cradle and rotate the hookswitch tab 180
degrees, then reinsert the hookswitch tab, as shown below:
6) Finally, mount the IP phone to the wall, as shown below: