Kamailio SIP Server v5.1.9 stable is out – a minor release including fixes in code and documentation since v5.1.8. The configuration file and database schema compatibility is preserved, which means you don’t have to change anything to update.

Kamailio® v5.1.8 is based on the latest source code of GIT branch 5.1 and it represents the latest stable version. We recommend those running previous 5.1.x or older versions to upgrade. There is no change that has to be done to configuration file or database structure comparing with the previous releases of the v5.1 branch.

Resources for Kamailio version 5.1.9

Source tarballs are available at:

Detailed changelog:

Download via GIT:

 # git clone https://github.com/kamailio/kamailio kamailio
 # cd kamailio
 # git checkout -b 5.1 origin/5.1

Relevant notes, binaries and packages will be uploaded at:

Modules’ documentation:

What is new in 5.1.x release series is summarized in the announcement of v5.1.0:

Note: the branch 5.1 is the previous stable branch. The latest stable branch is 5.2, at this time with v5.2.2 being released out of it. Be aware that you may need to change the configuration files and database structures from 5.1.x to 5.2.x. See more details about it at:

Also note that the dates of the next Kamailio World Conference, the 8th edition, were just announced, April 27-29, 2020. The event will take place again in Berlin, Germany!

Thanks for flying Kamailio!