Procedure
Step 1 Insert the mini-USB connector into the port on the base of the phone.
Step 2 Seat the ferrite bead between the posts and press the bead down firmly.
Step 3 Thread the cable in the cable channel. Make sure that you leave some slack in the cable.
Install ferrite bead on network cable
The following images show how to install the ferrite bead on the network cable.
Cisco Unified IP Conference Phone 8831 User Guide for Cisco Unified Communications Manager 9.0
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Features of your Cisco Unified IP Conference Phone
Install ferrite bead on network cable