We are in the process of setting up a pilot for Teams Direct Routing.
Direct route is working fine and all is working when using the default Service Country plan for Belgium.
I have created a new dialplan to also include extension dialing and to make the step towards Teams Phone System smaller. The problem is that this dialplan is not working in the Teams Client, though the Get-CsEffectiveTenantDialPlan -Identity email@example.com command tells me that the dial plan is correctly applied to the user.
It is not client related, as I have the same issue on my Audiocodes C450HD phone and my Teams App on my mobile.
Can you send an example of the Dial Plan that doesn't work? Do you have any other custom Dial Plans that does work or can you create a new simple one and test that one. It could be something wrong with the DP you created.