Cisco 79XX - 7921 Factory Reset Procedure

Goal

This article goes over how to do a factory reset on the Cisco 7921 wireless IP phone. Make sure that the phone is behind a CallTower ASA or a CallTower managed circuit before performing a factory reset as doing so can cause additional issues.

Resolution/Steps

Additional Information

Remember to not perform this factory reset procedure on any phone that is not plugged in behind a CallTower ASA or CallTower managed circuit.

Common Issues/Related Articles

Factory Reset:

• 7940 and 7960: Cisco - Phone: 7940 and 7960 Factory Reset Procedure

• 7920: Cisco - Phone: 7920 Factory Reset Procedure 

• 7942 and 7962: Cisco - Phone: 7942 and 7962 Factory Reset Procedure

• 7945, 7965, and 7975: Cisco - Phone: 7945, 7965, 7975 Factory Reset Procedure

• 7925: Cisco - Phone: 7925 Factory Reset Procedure

79XX Features:

• Cisco - Phone: Overview - 79XX Series

• Cisco - Phone: iDivert - 79XX Series

• Cisco - Phone: Pickup - 79XX Series

• Cisco - Phone: Extension Mobility - 79XX Series

• Cisco - Phone: Joining Calls - 79XX Series

• Cisco - Phone: Receiving Calls - 79XX Series

• Cisco - Phone: Call Park - 79XX Series

• Cisco - Phone: Speed Dials - 79XX Series

• Cisco - Phone: Transferring a Call - 79XX Series

• Cisco - Phone: Do Not Disturb (DND) - 79XX Series

• Cisco - Phone: Answering Additional Calls - 79XX Series

• Cisco - Phone: Cisco Function Directories - 79XX Series

• Cisco - Phone: Switching Between Calls - 79XX Series

• Cisco - Phone: Cisco Function Settings - 79XX Series

• Cisco - Phone: Cisco Function Buttons - 79XX Series

• Cisco - Phone: Returning to Initial Call - 79XX Series

• Cisco - Phone: Placing a Call on Hold - 79XX Series

• Cisco - Phone: Meet Me Conference Call - 79XX Series

• Cisco - Phone: Cisco Call Forwarding All - 79XX Series

• Cisco - Phone: Placing a Call - Internal, External, 911 or 411 - 79XX Series