Follow this procedure for a Cisco 6921 phone that is not working properly. That could include not connecting to the corporate directory, phone not registered, or not logging calls.
Contents vi Cisco IP Phone 7960 and 7940 Series User Guide 78-10182-08 Using the Speakerphone 1-14 Using the Headset 1-14 Customizing Your Phone From the User Options Web Pages 1-15 Logging In to the User Options Web Pages 1-16 Changing the Default Language for the User Options Web Pages 1-17 Establishing Cisco IP Phone Services 1-18 Subscribing to.
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3 Steps total
Step 1: While powering up the phone, press and hold #.
Step 2: Wait forHandset & mute button turn off, all other Lights stay green.
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.
Cisco Ip Phone Cp-6921 User Manual
When you press 1, the lights on the line buttons turn red. The light on the select button flash when a button is pressed.
If you press the buttons out of sequence, the lights on the line button, headset button, speakerphone button, and select button turn green. You will need to start over and press 123456789*0# in sequence again.
Cisco Cp-6921 User Guide
Step 3: Wait for phone to reset
Cisco Cp-6921 Manual
After you press these buttons, the phone goes through the factory reset process.
Do not power down the phone until it completes the factory reset process, and the main screen appears.