VoIP CP-8841 "Detecting Network" message, but not connecting to net

[david.cate]

I just migrated our facility from an outdated PBX system to a new Cisco VoIP system. I have one phone that is displaying "Detecting Network," but does not connect up. I know that network jack works fine because I've tested two laptops on it and another CP-8841 that has already been configured. The two laptops and the other CP-8841 work fine on this line. The problem, I'm guessing, is in the configuration of the phone within CUCM. When we went live someone else created all of the accounts (User, Voice Mail, and Phone) in CUCM for us; THIS IS THE FIRST ONE THAT I've done myself.

Does anyone have any suggestions what might be causing this problem?

Thank you in advance.

DC

[Chris Deren · Accepted solution]

Perform factory reset on the phone as it might have old certificates, static IP, etc. 

Simply press the Settings (gear) button --> Admin Settings --> Reset Settings --> All Settings.

[Chenna Krishna]

It worked for me :) Thank you Chris