VVX 600/500 + Lync phone edition support
We are using All Skype for Business Certified Phones for our Skype Server.
We are currently using conditional access for the Exchange side but not the skype side currently.
Lync phone edition, and Polycom UC (VVX phones) both use EWS in order to pull call logs, Visual Voicemail, Calendar information,etc.
Currently, there is no bypass for these deskphones to allow them to connect to exchange online when you enable and enforce device based conditional access.
A simple fix would be to add the models into the bypass models in Intune.
The longer fix is being tackled from two sources.
- Lync phone edition is falling out of support in the next year or two
- Polycom had already enabled Modern auth on their UC software (VVX phones), but they have not enabled device registration. So the UC is only for supporting MFA, not for supporting conditional access.
Again, these phones all use EWS.