Cisco 9971 - Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager

The following figure shows the cables.
Figure 29: Attach Cables
Step 4
Attach the phone to the wall bracket by inserting the tabs on the top of the phone bracket into the slots on the
wall bracket.
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