Topics Map > Communication and Collaboration > Lync / Skype for Business
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:
- 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.
To reset a Yealink Skype for Business device:
To reset a Yealink T42S, T46S, or T48S to factory default settings:
- Press and hold the OK key on the phone for 3 to 5 seconds.
- The phone will prompt you with "Reset to factory?"
- Tap OK
For Yeaklink T5x and CP960: Press and hold Home button for 20 seconds.
Resetting the phone may take a few minutes. Do not power off the phone until it restarts successfully.
How to Setup IP Phone: Skype for Business, IP Phone Installation and Login
When setting up an IP phone, you will be asked to create a device specific unlock PIN. This PIN is only used to unlock the device once the inactivity timeout value is reached. This can be any 6-digit combination. Technology Services does not know what the phone's unlock PIN is. If you have forgotten the phone's unlock PIN you will likely need to reset your phone.