Making phones ring with Tropo

I spent Saturday working the registration table at DrupalCamp Nashville. Aside from getting to be a bunch of great people, I got to spend most of the day sitting next to Adam Kalsey of Tropo. It seems that every time I turn around these days I'm running into Tropo at PHP events. So I decided to play around with their API to see what all the fuss was about.

• Read the original article at Zend Developer Zone