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Asterisk Downloads

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

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.

AsteriskNOW Software PBX

AsteriskNOW is the premier, ready-to-run distribution of open source Asterisk. AsteriskNOW is an ISO image that installs Linux, Asterisk and the FreePBX GUI in a single, simple install. For more information, including installation instructions, check out the AsteriskNOW page.

Digium/Asterisk Hardware Device Interface

What is DAHDI?

DAHDI (Digium/Asterisk Hardware Device Interface) is the open source device interface technology used to control Digium and other legacy telephony interface cards.

DAHDI Linux / DAHDI Tools

DAHDI Linux is the open source device driver framework used to interface Asterisk with telephony hardware. DAHDI Tools is a package of utilities for managing and monitoring DAHDI devices. The download on this page provides a combined package of the latest DAHDI Linux with the latest DAHDI Tools.

DAHDI Documentation

Download DAHDI

Latest Version 2.11.1


What is libpri?

libpri is an open source library that encapsulates the protocols used to communicate over ISDN Primary Rate Interfaces (T1, E1, J1). libpri is a dependency for Asterisk and DAHDI if PRI signaling is used.

Download libpri

Latest Version - 1.6.0

Test out an Asterisk-based phone system

Switchvox is the easiest and fastest way to get started with an Asterisk-based PBX system. As the maintainer and project sponsor of Asterisk, Digium has put the power of Asterisk to work in Switchvox, an award-winning phone system.

Access the Demo Server

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-2018-006: WebSocket frames with 0 sized payload causes DoS

AST-2018-005: Crash when large numbers of TCP connections are closed suddenly

AST-2018-004: Crash when receiving SUBSCRIBE request

AST-2018-003: Crash with an invalid SDP fmtp attribute

AST-2018-002: Crash when given an invalid SDP media format description