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Adhearsion is an open-source voice application development framework. Adhearsion users write applications atop the framework with Ruby and call into their code.

Adhearsion rests above a lower-level telephony platform, namely Asterisk, and provides a framework for integrating with various resources, such as SQL, LDAP and XMPP (Jabber).

Adhearsion has...

  • An elegant dialplan system for writing the code which controls a live phone call
  • A sophisticated Asterisk Manager Interface library with a lexer written in Ragel.
  • An events subsystem which maintains a Thread-pool for executing your namespaced callbacks. (supports AMI events too!)
  • A very useful component architecture with which you may write Adhearsion plugins and share them with the world via RubyGems.
  • JRuby compatibility for running atop the Java Virtual Machine and using virtually any Java library.
  • Ability to re-use existing Ruby on Rails database models with ActiveRecord/ActiveLDAP
  • Easy interactive communication via XMPP instant messages using the Blather library
  • Good regression test coverage

Use the public Adhearsion sandbox!

Don't want to screw with setting up a telephony system? You can test your Adhearsion applications using our public sandbox!

Visit for more information!

Yes, in minutes you can be controlling your cell phone for free! :)


Visit Adhearsion's website for code examples and more information about the project. Also checkout the Adhearsion wiki on Github for community documentation.

If you're having trouble, you may want to try asking your question on the IRC channel (#adhearsion on, mailing list or, if you've found a bug, report it on the bug tracker.

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