How do you factory reset a Cisco phone?
Cisco 7940 / 7960 phone Factory Reset:
Press 123456789*0# within 60 seconds after the Headset, Mute, and Speaker buttons begin to flash. If you repeat a key within the sequence, eg: 1223456789*0#, it is still accepted and the phone resets.
How do I reset my Cisco phone 7821?
Press and hold # and plug the phone back in. 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.
Why is my Cisco phone not working?
Solution. Verify that the Ethernet connection to which the Cisco Unified IP Phone connects is up. For example, check whether the particular port or switch to which the phone connects is down and that the switch is not rebooting. Also ensure that no cable breaks exist.
How do I reset my Cisco 7970 phone?
Cisco 7941, 7961, 7965, 7970 and 7971
- Hold # while you plug it in.
- When the line indicator buttons illuminate in sequence, release the # button and press 123456789*0# in order.
- The screen will turn “black” and the phone will reset to factory defaults.