Sometimes you may be in the situation that a ShoreTel phone may be unresponsive or does not connect to the headquarter server. You may receive messages on phone display like No service or Cannot connect to... or the phone completely hangs (and power off/on does not solve your issue) or similar issues. This could happen because of reboot failures or firmware loading issues if you may have unplugged the phone while it have booted up and such issues or if there are firmware bugs. Often it helps to power-cycle the phone again, but if this does not help you can reset the device. We have seen this in rare situations, but here is a way how to solve this issue.
Follow this step-by-step instruction and the phone is starting from scratch:
- Type
772667# on the phone keypad. You should not hear any touch tones, if you do, please press MUTE then 772667#.
- Enter the default password
1234#
- The phone will be reseted and display Factory Test KPD Mode.
- Type
25327# (spells clear#) on phone keypad.
- Then the phone will show Clearing Phone Data.
- The phone will reset and display Factory Test KPD Mode again.
- Power cycle the phone.
- Screen should be back to normal – you will see the firmware is downloaded.
This should work with nearly every ShoreTel phone, but not with IP8000 phones that are just ShoreTel labeled.