So, I was poking around the web interested in a discussion of the VOIP life cycle; I was really looking for “What ports are used” and so forth, but I stumbled across this very easy-to-read article (although he does drop the F-Bomb once, otherwise it was quite excellent)
It explains the VOIP call life-cycle, including an easy-to-follow graphic (which I’ll attach… a picture says a thousand words after all).
If you’re just getting into VOIP Telephony, this is a great article to help you understand, at a high level, what is connecting where and why.
Here’s a link to the article:
