Skype for Business, How to reset IP Phone

IP phone isn't working as expected and I need to reset it.

To reset a Lync Phone Edition device:

To reset any of the following IP phones:  Aastra 6721, Aastra/Mitel 6725, HP 4110, HP 4120, Polycom CX500, Polycom CX600, or Polycom CX3000 conference phone - do the following: 

1) Remove the power cord from the device, and wait 10 seconds. 

2) Press one of the following reset key combinations (differences are explained in final step), and continue to hold down the keys while the power is reconnected and the device starts up: 
  • For a Hard Reset, press * and #. A hard reset deletes all customer data on the device.
  • For a Factory Reset, press 4 and 6. A factory reset deletes all customer data and restores the previous valid image.
3) When asked to confirm before the device resets, press Yes.

To reset a Yealink Skype for Business device:

To reset a Yealink T42S, T46S, or T48S to factory default settings:

  1. Press and hold the OK key on the phone for 3 to 5 seconds.
  2. The phone will prompt you with "Reset to factory?"
  3. Tap OK

Resetting the phone may take a few minutes.  Do not power off the phone until it restarts successfully.

Keywords:Lync IP phone reset reboot   Doc ID:34182
Owner:Lync M.Group:University of Illinois Technology Services
Created:2013-10-04 13:27 CDTUpdated:2018-04-16 09:16 CDT
Sites:University of Illinois Technology Services
Feedback:  9   3