Cannot disable hide my phone number
After applying CallingLineidentity policy to allow user override, I see the ability to enable/disable caller ID in Teams client. Hiding caller ID is enabled by default (which was not expected), and I'm unable to uncheck the box to disable caller ID blocking.
David Stowers commented
If you use the enableuseroverride option in set-cscallinglineidentity or new-cscallinglineidentity you have to set CallingIDSubstitute to "Lineuri" or "service" rather than "anonymous" or you will not be able to change it on the fly despite the override command. By using LineUri you still have your number displayed unless you specifically change it from the webpage.