Voice Application Development Made Easy

if you are looking for a lib (ruby) to integrate your system with pabx systems (I mean asterisk), you can visit this domain: http://adhearsion.com/docs#adhearsion.

This is a nice work, written in ruby language, you can handle and route inbound/outbound calls, voip and instant messages easily and automatically.

The project is very well documented and you can start quickly to integrate your system.