I have a Polycom VXX500 which currently is running 5.2.0 without any issue. I've tried to upgrade to 5.4.1 and I can't access the phone via WebGui anymore and the phone line are with errors unregistred ... I've tried split version, and combined version and the same problem.
I did rollback to 5.2.0 and everything is fine.
Anyone who knows any solution for this issue?
Solved! Go to Solution.
Please ensure you check the community's VoIP FAQ as it contains this post here:
Mar 30, 2015 Question: Since upgrading to UCS 5.3.0 or later I can no longer access the Web Interface
Resolution: Please check => here <=
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