Thank you for asking this question in the support community. Based on the information you provided, it appears the phones are being powered by the POE provided from the ADTRAN switch, but the problem is the phones are not pulling their configuration from the server?
What model of phones are you using?
Is the ADTRAN switch providing DHCP for the phones, or only being used for POE?
If you get a chance, will you please answer these questions, as well as reply with the current configuration of the ADTRAN switch (please make sure to remove any information that may be sensitive to your organization).
I was able to get it working.
I went ahead and flagged this post as “Assumed Answered.” If any of the responses on this thread assisted you, please mark them as either Correct or Helpful answers with the applicable buttons. This will make them visible and help other members of the community find solutions more easily. If you still need assistance, I would be more than happy to continue working with you on this - just let me know in a reply.