Microsoft Teams Calling with Direct Routing Diagram

I am talking to a large amount of people about the calling functionality within Teams at present so Iā€™m my usual fashion I thought I would draw a doodle to help me illustrate the architecture.

The diagram above illustrates the different components within the architecture of a simple direct routing implementation of Microsoft Teams Calling including some of the licensing considerations over and above the 365 licence you are likely to already have.

This is just one of the configuration options available for Teams and if you are looking for a more simplistic solution using Teams native calling plans maybe a better option for you.