I'm evaluating the Polycom VVX 410 device against our Lync 2013 environment. I've successfully connected into our Lync platform and have BToE functioning. I then tried to enable the Exchange calendar function and populated it with the URL of the Office 365 EWS URL (https://outlook.office365.com/EWS/Exchange.asmx), but am getting calendar registration errors.
I've tried both with BToE enabled and not... but no different.
Is Office 365/Exchange Online a supported platform for the Polycom VVX calendar feature?
If it is not specifically mentioned in the Admin Guide or any accompanying support documentation then the answer is no.
For more details please work with your Polycom reseller.
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Polycom Global Services