Cisco 8851 (Standard Desk Phone) Troubleshooting Guide

General Disruption

1. Verify cords are plugged in correctly, in the back of the phone.
2. Manually reset the phone:
   1. Choose Applications or Settings.
   2. Choose Admin Settings.
   3. Choose Reset settings.
   4. Choose Reset device.
   5. Confirm the reset.
      • The phone will indicate it is not registered with a spinning icon in the upper right corner.

Note: Do not press any keys on the phone until the display returns to normal. This may take a few minutes.

3. If it doesn't work properly, obtain the current phone information:
   1. Choose Applications or Settings.
   2. Choose Phone information.
   3. Obtain:
      • IPv4 address
      • Host name (the MAC address)
      • Active load (the firmware version)
      • Last upgrade date and time

Note: Do not use the Report a Problem soft key

4. Provide the phone information to Tech Support.