Cisco 3905 Administration Manual page 128

Install Phone on Wall Mount Plate
Step 2 Plug the RJ45 connector into the wall mount phone jack as shown in the following image:
Figure 3: RJ45 Connector in the Wall Mount Jack
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Step 3
Slip the mounting holes on the base of the wall mount plate and over the wall mount pins as shown in the
following image:
Figure 4: Mounting Holes
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Cisco Unified SIP Phone 3905 Administration Guide for Cisco Unified Communications Manager 8.6 (SIP)
114
Network Port on the Phone
RJ45 Connector
Mounting Hole on the Phone
Cisco Unified SIP Phone 3905 Wall Mount
3 Wall Mount Plate
4 Network Port on the Wall Mount Plate