I'm struggling a bit to find information on what mailbox options are supported when registering group series to Skype online (yes, I understand qualification is pending). Specifically can I register my group series to Skype online but use an on-prem mailox for calendar? Is there any specific requirment for either Exchange Hybrid or Skype Hybrid in this scenario?
welcome to the Polycom Community.
To my knowledge the GroupSeries has a different registration part for the Calendar than the actual SIP registration so you should be fine.
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Polycom Global Services
Havnt had a chance to try it in a pure on-prem Exchange setup, but I can confirm that Skype online with Exchange Hybrid works ok.