Position the phone so that the front of the phone is facing up.
Line up the two open slots on the bottom of the Cisco 7916 expansion module with the two
hooks on the support bar.
Insert the hooks into the slots and then rotate the top of the Cisco 7916 expansion module into
the support bar so that it rests flush with the bar.
Tighten the thumbscrew on the back of the expansion module.
Note If you are connecting two expansion modules, repeat steps 2, 3, and 4 for the second expansion