Teams Real Simple with Pictures: Voicemail and Redirecting using SIP-URI

From time to time, I receive the odd question about Microsoft 365 - and whilst it has been by admission difficult this year getting onto the Tech Community I am starting to make a general comeback into wider community pursuits outside of speaking and blogging. Now everyone pretty much knows I started out in the Tech Community. I like answering questions. They are always opportunities to help, learn or both. So I had a question this week regarding the new centralized voicemail settings in the TAC and this particular question referred to call answering rules. More specifically, what did it mean that you could forward a call which has gone to voicemail to the SIP URI of another user? Where could you find the SIP URI of a user? What is the SIP URI? Very good.