Asterisk is software that turns an ordinary computer into a communications server. Asterisk powers IP PBX systems, VoIP gateways, conference servers and more. It is used by small businesses, large businesses, call centers, carriers and governments worldwide. Asterisk is free and open source. Asterisk is sponsored by Digium

   
Asterisk Introductory Video
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Learn the basics of Asterisk open source.
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Community Marketplace
Find Your Asterisk Solution
Get Started Video
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Asterisk or Switchvox
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Discover which system is right for you - the Asterisk communications toolkit or the Switchvox business phone system.
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Hosted Asterisk PBX & UC System


Asterisk Support

Digium offers around-the-clock support for Asterisk.

Asterisk Support from Digium

Subscribe today and let our experienced, motivated, and knowledgeable Asterisk open support engineers help you deploy with confidence.



Asterisk Events

Attend Asterisk World


Telephony Interface Cards

Gateway interface cards for analog, T1, E1, ISDN BRI, ISDN PRI and SS7 networks.

Connect your Asterisk system with the PSTN.




Say Hello To Asterisk Video

Say Hello To
Asterisk

New to Asterisk? Take a tour of Asterisk and discover how open source communications can help your business. Learn:


* What is Asterisk?
* How does Asterisk work?
* What can I do with Asterisk?
* Which version should I use?
* How do I get started?
* Where can I go to learn more?


Watch Now



Asterisk SCF



Asterisk News

News : Asterisk 10.1.0 Now Available
News : Asterisk 1.8.9.0 Now Available
News : Asterisk 10.1.0-rc2 Now Available
News : Asterisk 1.8.9.0-rc3 Now Available
Security : AST-2012-001: SRTP Video Remote Crash Vulnerability
News : Asterisk 1.8.8.2, 10.0.1 Now Available (Security Release)

More Asterisk News...



Asterisk is sponsored by Digium

Digium, The Asterisk Company, is the creator, maintainer and sponsor of the Asterisk project. Digium offers products and services that extend the power of Asterisk:

Business Phone Systems
Telephony Cards
Asterisk Software Add-ons
Asterisk Exchange
Asterisk Training