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Asterisk is a free and open source framework for building communications applications and is sponsored by Sangoma.

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What is Asterisk and What Can YOU Do With it?
11500000

Downloads Annually

Downloads Annually

85000

Community Members

Community Members

150

Countries with Installations

Countries with Installations

11500000

Servers Worldwide

Servers Worldwide

85000

New Endpoints Each Year

New Endpoints Each Year

Kit - Hello, World - Asterisk Mascot sticker example

IP Phones for Asterisk

• Full-color displays
• Multiple lines
• Starting at $59
See IP Phones

Asterisk is the #1 open source communications toolkit.

Asterisk powers IP PBX systems, VoIP gateways, conference servers, and is used by SMBs, enterprises, call centers, carriers and governments worldwide.
Download Asterisk

Need a Phone System?

Build your own custom system with Asterisk? Buy a powerful, low-cost turnkey system based on Asterisk? Discover which option is right for you.
Get the Guide

AstriCon

AstriCon is the longest-running open source convention celebrating open source projects featuring Asterisk and FreePBX. Consisting of multiple tracks, sessions, and EXPO hall, AstriCon offers various levels of education sessions and provides attendees networking opportunities with some of the best in the open source community.

Learn More
AstriCon 2021 - Orlando, Florida

Asterisk News

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Security Advisories

AST-2022-001: res_stir_shaken – Resource exhaustion with large files

April 14, 2022

AST-20220-003: ${SQL_ESC()} not correctly escaping a terminating \

April 14, 2022

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