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Asterisk is a free and open source framework for building communications applications and is sponsored by Sangoma.
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
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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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.
Asterisk News
Asterisk Version 21.2.0 Now Available
March 18, 2024
Asterisk Version 20.7.0 Now Available
March 18, 2024
Asterisk Version 18.22.0 Now Available
March 18, 2024
Asterisk certified-18.9-cert8 Now Available
March 12, 2024
Asterisk Version 21.1.0 Now Available
January 25, 2024
Security Advisories
PJSIP_HEADER dialplan function can overwrite memory/cause crash when using ‘update’ (GHSA-98rc-4j27-74hh)
December 20, 2023
PJSIP logging allows attacker to inject fake Asterisk log entries (GHSA-5743-x3p5-3rg7)
December 20, 2023
Asterisk susceptible to Denial of Service via DTLS Hello packets during call initiation (GHSA-hxj9-xwr8-w8pq)
December 20, 2023