Forum Discussion
No external communication with Teams when SipProxyAddress is missing?
Hi, I am a little bit confused. I have a customer where external communication (with other O365 tenants) worked without problems. Since a few weeks most of the users are not able to do this. Whe...
Is there any link/article about that?
Yes, see big blue section here on this page. YOu have to be homed in Skype for Business Online, aka license so your setup in order to federate until they launch native fed.
https://docs.microsoft.com/en-us/microsoftteams/manage-external-access
https://docs.microsoft.com/en-us/microsoftteams/manage-external-access