enable voice services with Microsoft Teams Rooms; revert Microsoft Teams Android-based device firmware; Conditional Access policies and Teams Phone

 A Microsoft Teams Rooms Standard license includes the Teams Phone license required to use the device with Calling Plans or Direct Routing.

The firmware can't be reverted using the Teams Admin Center and a factory reset of the device will revert the firmware to the version that the device was shipped with, or updated to using the vendor's own update procedures.

When using Conditional Access to allow Teams Phone sign-in, an Intune license and Intune configuration to support Android Device Administrator profiles must be applied.