This has already been through Avaya support but I am reaching out to see if anyone has this up and working. I have Avaya IPOffice version 10 running VMpro version 10, Exchange 2013 and using UMS. Phone lights never light up or get messages, messages only delivered to Outlook with UMS turned on. Avaya says they do not support Exchange 2013 however I had VMPro v8 working perfect with Exchange 2013 before I upgraded the voicemail server to Windows 2016 with VMPro v10. Voicemail pro is using MAPI for UMS.
Thanks in advance for any thoughts on this config.
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