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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
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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.
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Need a Phone System?

Get a feature-rich phone service with the peace of mind a life in the clouds offers.
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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.

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Asterisk News

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Security Advisories

A malformed Contact or Record-Route URI in an incoming SIP request can cause Asterisk to crash when res_resolver_unbound is used (GHSA-v428-g3cw-7hv9)

September 5, 2024

Write=originate, is sufficient permissions for code execution / System() dialplan (GHSA-c4cg-9275-6w44)

August 8, 2024

res_pjsip_endpoint_identifier_ip: wrongly matches ALL unauthorized SIP requests (GHSA-qqxj-v78h-hrf9)

May 17, 2024

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