Cisco 8961 Administration Manual page 260

Appendix E Installing the Wall Mount for the Cisco Unified IP Phone
Installing a Wall Mount for a Phone with a Key Expansion Module
Remove the handset wall hook in the handset rest, rotate the hook 180 degrees, and reinsert the hook.
Step 3
The hook should have a lip on which the handset catches when the phone is vertical (Figure E-10).
Figure E-10 Preparing the Handset Hook
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Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 8.6 (SIP)
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