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Blogging about Kamailio SIP Server, Asterisk, FreeSWITCH, SIP, WebRTC, VoIP and more...Daniel-Constantin Mierlahttp://www.blogger.com/profile/05389381828542758021noreply@blogger.comBlogger817125
Updated: 1 hour 15 min ago

Kamailio World 2016 – Call For Speakers

Wed, 01/06/2016 - 15:32
Submission of presentation proposals for Kamailio World 2016 is open. Deadline for submission is February 18, 2016, notification of accepted proposals will be done latest on March 03, 2016.Be aware that interesting proposals can be accepted before the deadline, we plan to have two intermediate review sessions before February 18, 2016, announcing any accepted presentations immediately. Note also that at the previous edition there were more proposals than available slots and the 2016 edition celebrates 15 years of Kamailio project development, expecting a significant increase of interest for the event. Therefore it is recommended to send your proposal as soon as possible, do not wait till deadline.To submit the proposal, fill in the web form at:The main topic of the conference is Real Time Communications, with the majority of the content being about Kamailio and other open source projects in the area. However, like for the past editions, we welcome very interesting presentations beyond those subjects.If you are interested to look at the agenda from previous edition, visit:Have a great 2016! Looking forward to meeting many of you at the next Kamailio World!


Tue, 01/05/2016 - 15:28
Continuing the tradition, many members of Kamailio project community will be at Fosdem 2016and we are planning again a social event on Saturday night (Jan 30, 2016). Among participants announced so far: Alexandr Dubovikov, Daniel-Constantin Mierla, Federico Cabiddu, Giacomo Vacca and Lorenzo Mangani.Should you want to join us for some drinks, food and interesting chats, announce yourself on sr-users mailing list (sr-users [at] lists.sip-router.org). As usual, each participants pays for himself or herself.There will be also couple of talks touching Kamailio on various tracks of Fosdem.

2016 Ahead

Sat, 01/02/2016 - 12:15
The 2016 has just started and I am really looking forward to it.

The big celebration of 15 years of development for Kamailio project happens this year.  Although has changed the names few time, along the years SIP Express Router (SER) and OpenSER, it is a real performance to stay atop and continue the development at high pace for such long time in the open source environment.

The Kamailio World Conference, scheduled for May 18-20, 2016, in Berlin, will take care to organize a great party for this celebration, expecting many of the relevant developers in the history of the project, which will share the experiences and the impact in their careers because of being involved in the open source project. Be sure you don't miss this edition!

One of the first milestones in 2016 is the release of Kamailio v4.4.0, a new major version, which will bring as usual several new modules, plus improvements and new features in the existing components.

The first event where we expect to get a consistent group of Kamailio developers and friends is Fosdem 2016, in Brussels.

With a continuous increase of activity in the community of Kamailio project, I expect plenty of new ideas and challenges to work with along 2016! Stay tuned and keep an eye on this blog for updates!

Happy New Year!

Fri, 01/01/2016 - 21:45
The amazing 2015 for Kamailio is done! Thank you everyone for contributing to it!Now it is the time to get prepared to fill the 2016, with interesting discussions on our forums, solving new RTC challenges, adding features in Kamailio and welcoming new contributors!We wish a healthy and prosperous year to all Kamailio friends! We are looking forward to meeting many of you at Kamailio World Conference, where we are going to celebrate 15 years of development for Kamailio project, as well as at other events around the globe!


Mon, 12/28/2015 - 23:00
While owning the domain miconda.eu for quite some time, never found the time to set it up. With the winter holidays giving sort of a break, I pointed blog.miconda.eu to my blog (here) at by-miconda.blogspot.com.

The main domain miconda.eu is pointed to about.me/miconda . I plan to make more use of this domain (email?!?), let's see if 2016 brings more spare time ...

Enjoy the winter holidays!

Merry Christmas and Happy Holidays!

Fri, 12/25/2015 - 12:43
With an amazing 2015 almost gone, it is a good moment to thank and greet the people involved in Kamailio project, old and new friends, developers, contributors, the engaged and warm community members.
Very soon 2016 will arrive, Kamailio will celebrate 15 years of development, therefore we are looking to a special year ahead!

Together with Asipto, I Wish You Merry Christmas and Happy Winter Holidays!

Kamailio v4.1.9 Released

Fri, 12/18/2015 - 23:10
The Kamailio SIP Server v4.1.9  stable version  is released. This is a minor release including fixes in code and documentation since v4.1.8 – configuration file and database compatibility is preserved within 4.1.x series. Important Note: branch 4.1 is not going to be packaged anymore, v4.1.9 being the last version to be released from this branch, marking the end of the official maintenance for 4.1.x series.The current latest stable branch is 4.3, at this time with v4.3.4 being released out of it. The project is officially maintaining the last two stable branches, these are now 4.3 and 4.2. Therefore it is recommended to upgrade to latest 4.3.x – be aware that you may need to change the configuration file from 4.1.x to 4.2.x or 4.3.x.Resources for Kamailio version 4.1.9Source tarballs are available at:Detailed changelog:Download via GIT: # git clone git://git.kamailio.org/kamailio kamailio
# cd kamailio
# git checkout -b 4.1 origin/4.1Binaries and packages will be uploaded at:Modules’ documentation:What is new in 4.1.x release series is summarized in the announcement of v4.1.0:See more details about the latest stable branch, v4.3.x, at:

Kamailio v4.2.7 Released

Thu, 12/17/2015 - 22:59
Kamailio SIP Server v4.2.7 stable is out! This is a minor release including fixes in code and documentation since v4.2.6.Kamailio v4.2.7 is based on the latest version of GIT branch 4.2.  If you are running previous 4.2.x versions are advised to upgrade to 4.2.7 (or to 4.3.x series). If you upgrade from older 4.2.x to 4.2.7, there is no change that has to be done to configuration file or database structure comparing with older v4.2.x.Resources for Kamailio version 4.2.7Source tarballs are available at:Detailed changelog:Download via GIT: # git clone git://git.kamailio.org/kamailio kamailio
# cd kamailio
# git checkout -b 4.2 origin/4.2Binaries and packages will be uploaded at:Modules’ documentation:What is new in 4.2.x release series is summarized in the announcement of v4.2.0:Note: the branch 4.2 is the previous stable branch. The latest stable branch is 4.3, at this time with v4.3.1 being released out of it. The project is officially maintaining the last two stable branches, these are 4.3 and 4.2. Therefore an alternative is to upgrade to latest 4.3.x – be aware that you may need to change the configuration files and database structures from 4.2.x to 4.3.x. See more details about it at:

New Logo for Kamailio Project

Wed, 12/16/2015 - 22:58
As of today, December 16, 2015, the Kamailio Project is officially using a new logotype:Different formats and 3D artwork of the new logo can be found at:If you do any artwork based on the new logo and you want to share it with the community, we will gladly host it. Please do not hesitate to contact us.We encourage everyone displaying an old logo of Kamailio to update to the new one at the earliest convenience, it will help propagating the logo. Posting about it on blogs, forums, social media channels a.s.o. is very much appreciated.The community of the project liked the new logo, we hope everyone else will find it nice as well!Enjoy the winter holidays!

New Kamailio Module: cfgt

Tue, 12/15/2015 - 22:56
Victor Seva from Sipwise has published a new module forKamailio, named cfgt. The module is to be part of the next major release of Kamailio – v4.4.0, expected to be out on early spring of 2016.The module is useful for unit testing, to compare the results of the Kamailio configuration file routing logic. The report of execution is in JSON format, making it easy to analyse. Among the contents of the report can be the values for variables used in the configuration file.You have to make your test scenario (e.g., using sipp), send the traffic to Kamailio and then check if the report contains expected results.The documentation of the module is available at:

    The functionality of the module is rather small by now, but Victor is committed to add more in the near future, including examples of how to use it. Stay tuned and keep an eye on kamailio.org for updates!

    Next Kamailio World – May 18-20, 2016, in Berlin

    Mon, 12/07/2015 - 10:48
    Kamailio project is pleased to announce that the date and location for next Kamailio World Conference and Exhibition were decided – May 18-20, 2016, in Berlin, Germany.Kamailio project is celebrating 15 years of development in 2016, therefore we plan to have a special edition, many guests that impacted the evolution of the project since its start in 2001 at FhG Fokus Institute.Website of the event and call for presentations will be launched very soon. Meanwhile, if you haven’t participated at a past edition, you can check the previous edition website in order to get an idea about the structure and content of the event:Keep an eye on this news feed for updates in the near future!

    Proposing a New Logo for the Kamailio Project

    Thu, 12/03/2015 - 13:56
    During the Kamailio IRC level meeting this summer, a need for refreshing the logotype of the project was discussed. The current (embedded in the upper right corner of kamailio.org main page) is based on the one used for during the former OpenSER name of the project, with changes of the text to reflect the SIP Router and Kamailio names, somehow not longer very balanced, lacking good quality and high resolution graphics. The participants agreed that a refresh would be better than keeping that version.One option was to reuse the graphics from Kamailio World Conference logo, simply with Kamailio name. It was used even before as alternative logo by various peoples and companies.We now want to finish this process and we considered also the possibility of a new logo design. Thanks to Asipto and their deal with 99Designs, we ran a design contest and see if someone proposes an interesting logotype. Based on the result of the contest, followed by discussions on management group and the people interested in updating the logotype, we are proposing a new logo for the project:During the next days we are expecting feedback from community, especially if it looks too similar with other logos they know or if they like it or not. Based on that, a final decision will be taken and either we will switch to the new proposed logo or keep looking for a new one.Join the discussion about the new logo on users mailing listsr-users@lists.sip-router.org .2D and 3D variants in different formats, as well as some combinations with few pictures, can be found at:As a preview, a few variants are embedded here:

      Kamailio Syntax Highlighting for the Atom Editor

      Tue, 12/01/2015 - 13:52
      Atom is an open source editor developed by Github. One of its useful features is ability to preview the markdown files while editing them. The Kamailio source tree includes a few such markdown files (e.g., README.md in the root folder). They are nicely displayed when browsing the GIT repository at github.com.Another feature would be auto-completion suggestion based on the content of the edited file, so, for example, if you define a route block, then its name appears when adding the statement to execute that route.A syntax highlighting package for kamailio.cfg has been made available at:Information about how to install it are available in the readme at the above link.For now, it does rather basic matching of configuration file elements, still relevant to make them easier to spot. Contributions to enhance it are more than welcome!A screenshot with a part of default configuration:.Enjoy!

      Building Kamailio in Docker

      Thu, 11/26/2015 - 22:00
      Thanks to Victor Seva from Sipwise, the Travis-CI jobs for building Kamailio were upgraded to useDocker containers.A part of continuous integration process for Kamailio project, the builds are triggered by commits to master and stable branches, helping to detect compilation issues on different OS distributions, which typically happen due to different versions of libraries.The bonus is that the same build system can be used locally by anyone, being it developer or VoIP engineer. Quite useful in cases when one wants to backport patches or develop its own extensions.You can read the description of the build system as well as get the scripts from the source code of Kamailio, in the folder test/travis-ci. You can browse the content of the folder online at:Enjoy!

      Kamailio v4.3.4 Released

      Wed, 11/25/2015 - 23:00
      Kamailio SIP Server v4.3.4 stable is out – a minor release including fixes in code and documentation since v4.3.3. The configuration file and database schema compatibility is preserved.Kamailio (former OpenSER) v4.3.4 is based on the latest version of GIT branch 4.3, therefore those running previous 4.3.x versions are advised to upgrade. There is no change that has to be done to configuration file or database structure comparing with older v4.3.x.Resources for Kamailio version 4.3.4Source tarballs are available at:Detailed changelog:Download via GIT: # git clone git://git.kamailio.org/kamailio kamailio
      # cd kamailio
      # git checkout -b 4.3 origin/4.3Binaries and packages will be uploaded at:Modules’ documentation:What is new in 4.3.x release series is summarized in the announcement of v4.3.0:PS: note the dates and location for next Kamailio World – May 18-20, 2016, in Berlin, Germany – it is going to be a special edition, with Kamailio project celebrating 15 years of development.

      Preparing for FOSDEM 2016

      Thu, 11/12/2015 - 21:54
      Daniel Pocock has sent a very informative email about FOSDEM 2016 and Real Time Communications – read it here., with useful details about volunteering and speaking opportunities.FOSDEM 2016 takes place in Brussels, Belgium, during January 30-31, 2016, being one of the biggest gathering events for open source developers world wide. It will host a Real Time dev room, as the successor of Telephony and XMPP dev rooms.Members of Kamailio community will be at the event, continuing the tradition of several years in a row to meet there and discuss what is new about the project and real time communications.

      Kamailio HA with Ansible, Corosync and Pacemaker

      Wed, 11/11/2015 - 21:53
      Gholamreza Sabery Tabrizy has published a Github repository with Ansible playbooks for deploying a Kamailio active-passive HA node using Pacemaker and Corosync.You can see more details at:With few tunings to the options, it can be used as a starting point to build your own Kamailio HA node.Enjoy!PS: if you wrote or if you are aware of tools or articles related to Kamailio, email a short note to one of our mailing lists and we will publish on kamailio.org news sections.

      6th FOKUS FUSECO Forum

      Tue, 11/03/2015 - 21:00
      Fraunhofer Fokus Research Institute, the place where SIP Express Router (SER) project started (which over the time resulted in Kamailio project), is organizing the 6th edition of FUSECO Forum during Nov 5-6, 2015, in Berlin, Germany.The two days event combines practical workshops with panels and keynote presentations, revealing what is the trend in real time communications, from classic telephony, 4/5G to IoT, smart cities and machine to machine communications.For more details, see:Representative from Kamailio community will be at the event, myself included, along with Dragos Vingarzan (initial developer of IMS extensions) and Elena-Ramona Modroiu (core developer).

      Kamailio Advanced Training, Nov 30 – Dec 02, 2015, in Berlin

      Thu, 10/29/2015 - 05:30
      Next European edition of Kamailio Advanced Training will take place in Berlin, Germany, during November 30 – December 02, 2015.The content will be based on latest stable series of Kamailio 4.3.x, released in June 2015, the major version that brought a large set of new features, currently having the minor release number v4.3.3.The class in Berlin is organized by Asipto  and will be taught by Daniel-Constantin Mierla, co-founder and core developer of Kamailio SIP Server project.Read more details about the class and registration process at:

      Kamailio Dispatcher Discovery Service with NodeJS and Etcd

      Wed, 10/28/2015 - 22:11
      An interesting resource for those relying on NodeJS for various needs and using Kamailio as load balancer in front of Asterisk or eventually other SIP systems (Freswitch, media servers, PSTN gateways, etc…):Practically, this tool can be run along side with Kamailio and each SIP system (e.g., Asterisk), usingEtcd as communication channel to publish what SIP systems are available. Based on this information, the tool instance next to Kamailio is generating the dispatcher.list and instructs Kamailio to reload that file.Etcd is a highly-available key value store for shared configuration and service discovery developed as part of CoreOS project.


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