Force Teams-to-Teams calls to use Direct Routing SBC

Alexis_Spencer KasperLeth 

I was noodling on this earlier today, and the only way I could think of doing it for ALL PSTN calls would be to change the Teams users to not have the real number.  In that, I mean do something like this:

- Assign Teams users something that can easily be manipulated to their real number, such as +1555555#### where #### is the real last 4 digits, and all 5s is made up.

- SBC routes calls to existing PBX or whatever handles the "multi-route" functionality

- Set "inbound" rules from MS Teams to SBC to change made up number to real number.

- Set "inbound" rules from MS Teams to SBC to change Caller ID from made up number to real number.

- Set "inbound" rules from SBC/PBX to Teams to change real number to made up number.

This would mean if a Teams user calls another Teams user PSTN number, there is no Teams based match, and the call will hit the SBC, where it is rewritten and passed onto the third party device. This won't fix Teams to Teams calls, and might not be worth the effort depending on the volume of your user-base.

It's absolutely not pretty, but might be workable. Has anybody checked UserVoice to see if there are any similar requests that can be voted on? If not, I'd suggest adding one, put links back here, and open a Support Ticket and ask if they have options as well.