Cisco 3905 Administration Manual page 130

Adjust Handset Rest
Adjust Handset Rest
With a wall-mounted phone, you might need to adjust the handset rest to ensure that the receiver does not slip
out of the cradle. The hook should have a lip on which the handset catches when the phone is vertical. Follow
the diagram and steps below to change the hookswitch hook.
Figure 6: Adjust the Handset Hook
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Cisco Unified SIP Phone 3905 Administration Guide for Cisco Unified Communications Manager 8.6 (SIP)
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Remove the handset from the cradle and pull the plastic tab from the handset rest.
Rotate the tab 180 degrees.
Hold the tab between two fingers, with the corner notches facing you.
Line up the tab with the slot in the cradle, and press the tab evenly into the slot. An extension
protrudes from the top of the rotated tab. Return the handset to the handset rest.
Cisco Unified SIP Phone 3905 Wall Mount