Cisco 9971 - Non-Lockable Wall Mount Components for Phone with Key Expansion Module; Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager

Procedure
Step 1
Push the screw drivers into the left and right holes in the phone mounting plate approximately 1 in. (2.5 cm).
Step 2
Lift the screwdriver handles up to put a downward pressure on the tabs.
Figure 23: Disengage Tabs
Step 3
Press firmly to disengage the tabs and lift the phone at the same time to release the phone from the wall bracket.
Non-Lockable Wall Mount Components for Phone with Key Expansion Module
This section describes how to install the ADA Non-Lockable Wall Mount Kit for 8961 Series and 9900 Series
IP Phones with Key Expansion Module on a Cisco Unified IP Phone 8961, 9951, and 9971 when the phone
is connected to a Key Expansion Module.
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 10.0
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Non-Lockable Wall Mount Components for Phone with Key Expansion Module