Time Moves Ever Forward!

Two versions of Asterisk have now transitioned to new support status, check them out below!

🚫 Asterisk 18 Has Reached End of Life

Asterisk 18 was a Long Term Supported (LTS) release that is now officially End of Life (EOL). This means it will no longer receive updates of any kind, including security patches or bug fixes. If you’re still running Asterisk 18, it’s time to plan your upgrade to a supported version to ensure your system remains secure and functional.

Please consider reviewing the details on what’s new and what’s changed between major versions since 18:

• Asterisk 19.0.0 UPGRADE.txt
• Asterisk 20.0.0 UPGRADE.txt
• Asterisk 21.0.0 ChangeLog
• Asterisk 22.0.0 ChangeLog
• Asterisk 23.0.0 ChangeLog

Of particular note is the removal of chan_sip in Asterisk 21 — and, therefore, all later versions like 22 and 23 — in favor of chan_pjsip. Check your dial plan e.g. extensions.conf file for lines containing:

  Dial(SIP/...)

Because if you find them, then there’s going to be more work to do in Asterisk 22, as you convert to:

  Dial(PJSIP/...)

…and make additional necessary changes in other configuration related to PJSIP.

🛡️ Asterisk 21 Enters Security Fix Only Status

Asterisk 21 is a standard release that has transitioned to Security Fix Only (SFO) status. While it will continue to receive critical security patches for one more year (until October 2026), no new features or non-security updates will be released.

✅ Stay Supported, Stay Secure

We strongly encourage all users to upgrade to a currently supported version of Asterisk. Staying up to date ensures you benefit from the latest features, performance enhancements, and — most importantly — security protections.

To help you plan your upgrade, check out the related documentation and the official Asterisk Versions page which includes detailed support timelines and lifecycle information.

Let’s keep your toolkit for telephony applications robust and secure — upgrade today!