Asterisk Phone System

Asterisk Phone System

Asterisk is a free and open source voice communications server software application that runs on Linux and other Unix-like operating systems. With Asterisk, you can create and deploy a wide range of telephony applications and services like IP PBXs (private branch exchange) and VoIP (Voice over Internet Protocol) gateways.

Asterisk is written in the C programming language and is released under the GNU General Public License (GPL.)


Ready To Get Started With Asterisk?


Asterisk, the world’s most popular open source communications project, is free, open source software that converts an ordinary computer into a feature-rich voice communications server. Asterisk makes it simple to create and deploy a wide range of telephony applications and services, including IP PBXs, VoIP gateways, call center ACDs and IVR systems.

Asterisk is released as open source under the GNU General Public License (GPL), and it is available for download free of charge. Asterisk® is the leading open source telephony project and the Asterisk community has been ranked as a key factor in the growth of VoIP. You can download it here.


  • 2,000,000 Downloads Annually
  • 86,000 Community Members
  • 170 CountriesWith Deployed Installations
  • 1,000,000 Servers Worldwide
  • Fortune 500 Overwhelmingly Use
  • 1.3 Million New Endpoints Each Year

Sources: Asterisk’s home & software pages


Switchvox: The Turnkey Asterisk IP PBX

The above screenshot is Switchvox a phone system based on Asterisk.


Next Open Source Tuesday will feature the CMake project.

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