Does that help explain?
We have a presentation up about what you can do with the API at http://www.crunched.com/access/dc387b73d0aa876e67a173e7b1fdf...
You can find tutorials, sample applications, and documentation at http://developer.att.com/developer/forward.jsp?passedItemId=...
Does this mean if the customer has an AT&T iPhone (for example) you can receive copies of SMS sent to their handset via the API, or is it still the case that you need a new virtual/tropo number or port your number away from the device?
We developed a location service that met all of AT&T's and CTIA's consent guidelines yet they were the one carrier to reject the app - and without good reason.
Have calls to your mobile number ring to a phone or computer in your house (wifi or wired).
Built by the same folks as Tropo was, so the couple hundred thousand Tropo developers will find the Ameche API familiar.
As it gains carrier support, you'll be able to do all this with your existing mobile number.