What can we help you find?

Asterisk Downloads

Download the currently supported versions of Asterisk and various Asterisk-related open source projects.

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 Now    Learn More

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.

Learn More

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.

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-13

An 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.

Security Advisories

AST-2019-001: Remote crash vulnerability with SDP protocol violation

AST-2018-010: Remote crash vulnerability DNS SRV and NAPTR lookups

AST-2018-009: Remote crash vulnerability in HTTP websocket upgrade

AST-2018-008: PJSIP endpoint presence disclosure when using ACL

AST-2018-007: Infinite loop when reading iostreams