Below are links to download the current stable versions of Asterisk and various Asterisk-related open source projects. For access to the current development branch of a project's source code, check the Asterisk.org subversion server.
Asterisk Downloads
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Asterisk
Asterisk is an open source toolkit for developing telephony solutions. For a more detailed explanation, check out the Asterisk page. For more information about the different versions of Asterisk, see the Asterisk Versions page.
| Asterisk 1.8 | Asterisk 1.6.2 | Asterisk 1.4 | |
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| ChangeLog 1.8.0 beta 2 | ChangeLog 1.6.2 | ChangeLog 1.4 |
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AsteriskNOW
AsteriskNOW is the premier ready-to-run distribution of open source Asterisk. AsteriskNOW is an ISO CD image that allows you to install Linux, Asterisk and the FreePBX GUI in a single simple install. For more information including installation instructions, check out the AsteriskNOW page.
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| MD5 | 29c2b9da6206f7a3c0ee68308a922801 | d932b6ef789f23b4bece4fbdb09c9fa4 |
| SHA1 | 0864afb07a8317fd4c67c547c4e54d53bab7ac3d | 7337a9a299003332b465c07e4f70fc56179e7058 |
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Asterisk Add-Ons
Asterisk Add-Ons include a number of additional open source drivers and utilities including support for mp3 playback, MySQL real-time and CDR support, chan_mobile, and an alternative H.323 driver (chan_ooh323). Please note that some of these are experimental.
| Asterisk 1.6.2 | Asterisk 1.4 | |
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DAHDI Linux / DAHDI Tools
DAHDI Linux is the open source device driver framework used by multiple hardware vendors to interface applications (including Asterisk) with telephony hardware. DAHDI Tools is a package of utilities for managing and monitoring DAHDI devices. For a more detailed explanation, check out the About DAHDI page. (Note:The 'Zaptel' code from older releases has been renamed to 'DAHDI')
| Full Package | Linux Drivers Only | Tools Only | |
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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. For a more detailed explanation, check out the About LibPRI page.
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LibSS7
LibSS7 is an open source library that is used for providing SS7 protocol services to applications - like Asterisk. It has a working MTP2, MTP3 and ISUP for ITU and ANSI-style SS7. LibSS7 is a dependency for Asterisk and DAHDI if SS7 signaling is used.
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Sounds
By default, Asterisk includes a set of GSM-encoded speech prompts in US English. Additional speech prompts in various encoding formats and languages are available.
The easiest way to install additional prompts is to use menuselect during the Asterisk installation process.
$ make menuselect
The additional sounds can be found in the "Core Sound Packages", "Music On Hold File Packages", and "Extras Sound Packages" sections in menuselect.
Sound packages are available in G.711 ulaw & alaw, G.722, G.729, GSM, Polycom® Siren 7 (G.722.1), Polycom® Siren 14 (G.722.1C), 16-bit Signed Linear, and WAV formats.
If you need manual access to the various sound packages, click here.
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Older Versions / Direct Access
For direct HTTP access to the Asterisk download site, which includes older releases and additional files, click here.
* Free Fax For Asterisk is free but not open source. It is available under the terms of Digium's commercial software license agreement.
Install From Yum Repo
For information on installing Asterisk and associated software on RedHat Enterprise Linux 5 or CentOS Linux 5 from the Digium yum repository see the yum installation how-to page.
Source From Subversion
To learn how you can check out development copies of Asterisk and related projects from the Asterisk Subversion repository see the SVN check-out how-to page.
