VBX can be used for auto-dialing and predictive dialing.
VBX makes it super simple to create Cloud Voice Applications
These applications are created using a simple drag & drop interface.
VBX interfaces with multiple Cloud Voice providers
Plivo, Twilio, Nexmo and Phaxio
VBX prevents vendor lock in
Integrating your application with VBX allow you to switch from Twilio to Plivo w/o changing code.