Also, "If a Teams client for a United States Calling Plan user doesn't dynamically acquire an emergency address within the United States, then the registered emergency address is used to help screen and route the call. However, the call will be screened to determine if an updated address is required before connecting the caller to the appropriate PSAP."

Which is a clear violation of Kari's Law. A business phone system in the US is absolutely not allowed to intercept and divert 911 calls.