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Title: Adhearsion  
Author: World Heritage Encyclopedia
Language: English
Subject: Ruby programming language, RubyKaigi, Ruby Application Archive, Ruby Document format, Ruby Central
Collection: Free Software Programmed in Ruby
Publisher: World Heritage Encyclopedia


Developer(s) Adhearsion Team
Stable release 2.5.4 / July 18, 2014 (2014-07-18)
Written in Ruby
Operating system Cross-platform
Type Telephony application framework
License Expat License
Website adhearsion

Adhearsion is an open source voice development framework for the Ruby programming language. It is intended to be used to create rich voice applications integrated with other technologies, such as web applications, databases and instant messaging.


  • History 1
  • Overview 2
  • References 3
  • External links 4


Adhearsion was created in 2006 and released by Jay Phillips in December of that year as an open source project.[1] In August 2007 O'Reilly Media published the Asterisk The Future of Telephony book that included Adhearsion.[2] In December 2009 Pearson Education published the Practical Asterisk 1.4 and 1.6: From Beginner to Expert book that included a section on installing Adhearsion and configuring it for use with Asterisk_(PBX) 1.4 and 1.6.[3] The latest major version, 2.0.0, was released in April 2012 and includes many substantial improvements over 1.x.[4]


Adhearsion is an entirely independent framework, including application and code generators and a plugin system. Today Adhearsion works with the Asterisk telephony engine,[2] as well as with Tropo's PRISM and FreeSWITCH through the open source Rayo protocol and requires Ruby 1.9.3 or higher.

The framework allows developers to create stand-alone voice applications, or add voice functionality to existing applications or systems using a modern dynamic programming language, Ruby, as opposed to requiring the use of VXML or CCXML. Adhearsion provides a set of classes and facilities that enables a developer to work with voice with little knowledge of the voice development domain.

Since both Adhearsion and all of its dependencies are open source, developers have the ability to develop sophisticated voice applications without significant up front costs that have been the historical norm in telephony development.

The current members that make up the core team are Jason Goecke, Ben Klang and Ben Langfeld.


  1. ^ "What is Adhearsion?". Retrieved 2007-02-10. 
  2. ^ a b Asterisk - The Future of Telephony. Retrieved 2007-08-27. 
  3. ^ Practical Asterisk 1.4 and 1.6: From Beginner to Expert. Retrieved 2014-10-30. 
  4. ^ "Adhearsion 2.0.0: It's ALIIIIVE!". Retrieved 2012-04-11. 

External links

  • Adhearsion official website
  • Adhearsion Wiki
  • Linux Journal Article on Adhearsion
  • Adhearsion Github Repo
  • O'Reilly Radar Article 2007
  • Adhearsion The Changelog Podcast
  • Telefonica Presentation on Adhearsion
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