Perform Factory Reset Phone Keypad; Perform Factory Reset From Phone Menu - Cisco 7821 Administration Manual

Basic Reset
Related Topics
Determine DNS or Connectivity Issues, on page 189
Factory Reset of Phone Has Deleted 802.1X Shared Secret, on page 187

Perform Factory Reset Phone Keypad

Use these steps to reset the phone to factory default settings using the phone keypad.
Procedure
Step 1 Unplug the phone:
• If using PoE, unplug the LAN cable.
• If using the power cube, unplug the power cube.
Step 2 Wait 5 seconds.
Step 3 Press and hold # and plug the phone back in.
Step 4
When the light on the Mute button and handset light strip turns off and all other lights (Line button, Headset
button, Speakerphone button, and Select button) stay green, press 123456789*0# in sequence.
When you press 1, the lights on the line buttons turn red. The light on the Select button flashes when a button
is pressed.
After you press these buttons, the phone goes through the factory reset process.
If you press the buttons out of sequence, the phone powers on normally.
Caution

Perform Factory Reset from Phone Menu

To perform a factory reset of a phone,
Procedure
Step 1 Press Applications.
Step 2 Choose Admin Settings > Reset Settings > All.
If required, unlock the phone options.
Related Topics
Apply Phone Password, on page 38
Cisco IP Phone 7821, 7841, and 7861 Administration Guide for Cisco Unified Communications Manager 10.0
(SIP)
196
Do not power down the phone until it completes the factory reset process, and the main screen
appears.