[visionik]

International is hard. I know from experience. That's where Tropo has one clear advantage over Twilio. Tropo is built on the Voxeo network, which has ten years of international experience, is deployed world-wide (seven data centers), and integrates directly with most of the carriers around the world.

I believe Twilio integrates directly with a single carrier (Level3). Last I checked they use/resell bandwidth.com for most of their calls.

-Jonathan (Voxeo CEO)

[jeffiel]

To correct a misconception, Twilio works with a variety of carriers, including Level3 and Bandwidth.com. Much like Google Voice, we work with a plurality of vendors for redundancy, geographic coverage, etc..

Voxeo also works with Bandwidth.com. "Bandwidth.com shares Voxeo's 'All-IP' worldview and as a result is an important voice network partner for us." --Jonathan Taylor, Voxeo CEO

http://bandwidth.com/about/read/flexNetwork.html