Outlook and Teams with PSTN calling in work profile

Hi everyone

Just today I had a longer discussion with a senior escalation engineer from the Microsoft Outlook team. We did not figure out a bug or an Android Enterprise system behavior yet but so far:

I have to split my single support case to work on both topics explicitly: Outlook call "routing" in the work profile and Teams handling the phone number formatting.

We discussed mainly on the first topic and as far as we understood so far is the following: Outlook uses a protocol intent within their App (using "tel:"). As soon as MS Teams has a PTSN number configured the MS Teams app get's the system intent call and as it is the only App "answering" in the system request the OS decides to hand over the intent to Teams app. If the MS Teams app does not answer on the tel intent. The system will search the personal profile and requests the call from the system app.

Can the others confirm that the behavior is different between PTSN number configured in teams and no PTSN number ?

I don't know why there is a difference between URI intent and the native code implementation. This can maybe answered by the teams from Google ?

I will try to configure some app protection policies for Outlook and test whether this changes the behavior. There are some policies to only allow specific dialers etc. Due to holidays we paused the case with that agreement and will resume after 7th January.