Cisco 6921 Administration Manual page 151

Appendix E Installing the Wall Mount Kit for the Cisco Unified IP Phone 6921, 6941, and 6961
Installing the Bracket
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-4).
Figure E-4 Preparing the Handset Hook
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Cisco Unified IP Phone 6921, 6941, and 6961 Administration Guide for Cisco Unified Communications Manager 7.1 (SCCP)
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