Perform Custom Reset From Phone Menu; Reboot Your Phone From The Backup Image; Remove Ctl File - Cisco 7800 Series Administration Manual

Cisco IP Phone Troubleshooting
Step 4
To restore phone configuration or settings to factory default, press OK.

Perform Custom Reset from Phone Menu

Procedure
Step 1 Press Applications
Step 2
Scroll to Admin Settings and select Custom Reset.
Step 3 To restore phone configuration or settings to noncustomized default, press Ok.

Reboot Your Phone from the Backup Image

Your Cisco IP Phone has a second, backup image that allows you to recover the phone when the default image
has been compromised.
To reboot your phone from the backup, perform the following procedure.
Procedure
Step 1
Disconnect the power supply.
Step 2 Press and hold the pound (#) key.
Step 3 Reconnect the power. Continue pressing the pound key until the Speakerphone
buttons turn green.
Step 4
Release the pound key.

Remove CTL File

Deletes only the CTL file from the phone.
Procedure
Step 1 From the Admin Settings menu, if required, unlock phone options.
Step 2
Choose Reset Settings > Security .
Related Topics
.
Apply a Phone Password, on page 39
Cisco IP Phone 7800 Series Administration Guide for Cisco Unified Communications Manager
Perform Custom Reset from Phone Menu
and Headset
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