So, an eBook is longer than an article, about as long as a white paper, but arguably not as authoritative. Regardless, SIP trunking is a topic still needs explaining, and if you're still wondering what it can do for your business, you'll want to give this a read. Fierce does good work, and I was glad to be asked for commentary on a couple of sections of this eBook. I'm certainly not the only voice here, and I hope you give it a read, and more importantly, I hope you learn something new.
Here's the link to download the PDF - it just takes a minute, and if you can't get this to go for you, drop me a line and I'll get you a soft copy.