I believe Microsoft Office Communicator solves part of this problem. It supports call forwading based on powerful rules and presence status, has Web access and

I believe Microsoft Office Communicator solves part of this problem. It supports call forwading based on powerful rules and presence status, has Web access and much more. I think the author is wrong in dismissing Skype/Microsoft in their ability to solve a complex problem and deliver both consumer- and enterptise-friendly solutions.