When configuring a Microsoft Teams Direct Routing Survivable Branch Appliance the other day I ran into an error. It was an interesting one that I think others will likely run into at some point too, so here is a blog post to save you wasting any more time than you need to thinking about it. After setting up the Teams SBA, I found that I could get users connected to it to send calls outbound to the PSTN, however, when I tried to send calls to the users in the other direction they would fail. L...
