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

d) Secure the phone bracket to the IP phone with the machine screws.
e) Thread the handset cord (and headset cord, if using one). Reattach the cords and seat them in the clips that
are incorporated into the phone body.
Figure 7: Attach Phone Bracket
Step 3
Attach the Ethernet cable to the 10/100/1000 SW network port and wall jack.
If you are connecting a network device (such as a computer) to the phone, attach the cable to the
10/100/1000 Computer (PC access) port.
Cisco Unified IP Phone 8961, 9951, and 9971 Administration Guide for Cisco Unified Communications Manager 10.0
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Lockable Wall Mount Components for Phone