Microsoft SBA can not connect with the MS teams client
I have a configuration involving multiple SBA's that was operational for a few weeks. However, I recently encountered an issue where calls to the SBA ceased functioning after disconnecting the internet connection from both Teams and SBA clients. Despite ensuring that certificates and licenses are correct, the problem persists. In the SBA log, when a call originates from the PSTN, the following entries are visible: INVITE): Move from Initial -> Notifying state"|"" Sending call notification to: "internal ID" "|"" No active registration for: "internal ID" "|"" SIP/2.0 480 Temporarily Unavailable However, when the call is initiated from the Teams client towards the PSTN, there is no corresponding entry in the SBA log. (Note: Teams clients are properly associated with the SBA.) Do you have any suggestions for debugging this issue? Thanks Amauri
Teams Survivable Branch Appliance firewall ports to Microsoft 365
Looking for information on the specific MSFT 365 ranges that a Teams Survivable Branch Appliance requires access to. The planning guide, https://docs.microsoft.com/en-us/microsoftteams/direct-routing-survivable-branch-appliance, details that tcp/443 is used by Microsoft SBA Server to communicate with Microsoft 365 and should be allowed on the firewall. Customer does not allow unfiltered access to the internet from the server on tcp/443 - can anyone help with the specific service tags that a Teams SBA requires access to ?