Asterisk Downloads
Download the currently supported versions of Asterisk
and various Asterisk-related open source projects.
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Build a custom Asterisk phone system with FreePBX
FreePBX is the #1 open source graphical user interface (GUI) for use with Asterisk. FreePBX makes it easier to build a custom phone system to fit your needs with its feature-rich core and many available modules and add-ons. The FreePBX Distro includes Asterisk, Linux, and all the tools you need to build your custom PBX. Download the full ISO today to easily get started using Asterisk.
Download Full ISO

Thank you for downloading the FreePBX Distro!
You’re one step closer to using the world’s most popular open source PBX platform.
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- Distro Releases
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Looking for an Asterisk-based commercial PBX?
Switchvox is the easiest and fastest way to get started with an Asterisk-based IP PBX system. As the maintainer and sponsor of Asterisk, Digium has used the power of open source to create an award-winning, turnkey phone system based on Asterisk that includes advanced features and requires zero coding.
Asterisk Communications Framework
Asterisk is an open source toolkit for building communications applications. For a more detailed explanation, check out the Get Started section. For more information on how to use Asterisk, see the Configuration and Operation sections of the wiki.

Thank you for downloading Asterisk!
You’re one step closer to using the world’s most popular open source communications software.
By providing your contact information we will be able to inform you of:
- Distro Releases
- Special Offers
- Product Updates
- New Products
- Newsletters/Blogs
You will be able to opt out of this communication at any time.
Source Code
If you need additional information about installing Asterisk from source code, read the installation guide on the Wiki.
Code can be checked out from the Git servers via anonymous read-only access. Development code can also be checked out from the Asterisk and libpri Gerrit repositories, and DAHDI Git repository. Below are example commands you might use to download the source from the various repositories.
# cd /usr/src# git clone http://gerrit.asterisk.org/asterisk asterisk
# git clone git://git.asterisk.org/dahdi/linux dahdi-linux
# git clone git://git.asterisk.org/dahdi/tools dahdi-tools
# git clone http://gerrit.asterisk.org/libpri libpri
To clone only a specific Asterisk branch from Gerrit, use the following format:
# git clone -b X http://gerrit.asterisk.org/asterisk asterisk-X(with X being the current release and revision number). Example:
Note: The below example may not reflect the current release to date.
# git clone -b 13 http://gerrit.asterisk.org/asterisk asterisk-13An important note
If you are intending to install a specific branch then it is best to clone that branch only and avoid cloning the entire repository.
If you have further questions or intend to push code back up to the repo please see the detailed Gerrit Usage instructions on the wiki.
ALERT: Asterix Open Source PBX is NOT associated with Sangoma Technologies
D-Series phones and Switchvox Mobile App Users
SSL Certificate fixes will require administrator action before May 28th, 2021.
Asterisk News
Asterisk 18.2.0 Now Available
Asterisk 16.16.0 Now Available
Asterisk 13.38.1, 16.15.1, 17.9.1 and 18.1.1 Now Available (Security)
Asterisk 18.1.0 Now Available
Security Advisories
AST-2021-005: Remote Crash Vulnerability in PJSIP channel driver
February 18, 2021
AST-2021-004: An unsuspecting user could crash Asterisk with multiple hold/unhold requests
February 18, 2021
AST-2021-003: Remote attacker could prematurely tear down SRTP calls
February 18, 2021
AST-2021-002: Remote crash possible when negotiating T.38
February 18, 2021
AST-2021-001: Remote crash in res_pjsip_diversion
February 18, 2021