I also am testing the 5.3.0 firmware and noticed that I am no longer able to access the GUI interface of the phones. Not sure if this is a known issue.
welcome back to the Polycom Community.
It is always useful to state the prior used software version as this allows yourself and others to check against current software release notes.
In addition the community's VoIP FAQ 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 <=
Please ensure you always check the community FAQ and/or utilize the community search before posting any new topics or follow up post’s.
Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.
Polycom Global Services
We are exactly having the same issue.
We have tested with Lync 2010, Lync 2013 and Skype for Business, using BToE 3.0, and firmware 188.8.131.5274.
Do you have any clue of why this is happeneing?
Sorry, I mean the issues are:
1. Outlook Contacts are not available
2. Call logs are not available
The rest of Exchange integration, like calendar, works pretty well.