Some interesting articles out about VoIP.
Lots of talk about SIP Trunking, but I think that it is a fool's gold. It is sold on price, not much in the feature department and is a commodity.
SIP Trunking - 5 Ways to Make Your Business More Competitive from Focus.
SIP Trunking: What to Do Before Pulling All of Your TDM Local Voice from NoJitter.
The key: Understand How Different Offerings Meet Your Needs (or Don't). That's what the salesperson's job is - to educate the customer on what the best solution is for his business.
Forbes has a good post on the Virtues of Hosted VoIP.
Want an advantage? Americans spend a billion hours yearly on voicemail and hate it. Fix that issue with voicemail-to-email, voicemail-to-text, and visual voicemail.
Cloud is actually helping Hosted VoIP providers, according to this blog post. Considering we call it Cloud Communications, Hosted UC, and other stuff, I'm amazed the marketplace isn't confused.
Then there is the Skype SIP trunk strategy to connect Avaya and other PBX's to the PSTN. Read the blog post from Dave here.