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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.comBlogger827125
Updated: 43 min 29 sec ago

Kamailio On ClueCon Weekly, Aug 29, 2018

Thu, 08/23/2018 - 10:00
On the 28th of August 2018, Daniel-Constantin Mierla will join the ClueCon Weekly Conference to talk about what’s new lately in the Kamailio ecosystem.ClueCon Weekly is a live 1-hour video conference session organised every Wednesday by the FreeSwitch project team, everyone can join with a modern web browser or dialing in from PSTN. Details about how to connect are available at:You are welcome to join and discuss or ask questions about Kamailio as well as its usage together with FreeSwitch.If there is a topic that you would like to be approached, email to and we will try to plug it in.Thanks for flying Kamailio!

Kamailio v5.1.5 Released

Wed, 08/22/2018 - 09:58
Kamailio SIP Server v5.1.5 stable is out – a minor release including fixes in code and documentation since v5.1.4. The configuration file and database schema compatibility is preserved, which means you don’t have to change anything to update.Kamailio® v5.1.5 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 5.1.5Source 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/5.1Relevant 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:Thanks for flying Kamailio!

Videos For Kamailio Presentations At ClueCon 2018

Tue, 08/14/2018 - 09:57
Video recordings for Kamailio-related related presentations at ClueCon 2018 are now available online:There were couple of other presentations touching Kamailio, RTPEngine or related projects, among them:As usual, ClueCon 2018 was a great place to connect with VoIP developers and professionals world wide. We are looking forward to next editions!Thanks for flying Kamailio!

Kamailio – The Project Name For Last 10 Years

Sat, 07/28/2018 - 09:56
Ten years ago, on July 28, 2008, the rename of OpenSER project to Kamailio was announced.Many may still remember the chaos created couple of days after, due to the fork that redirected the old domain, pretending to be the continuation of the OpenSER project, although the rename announcement was done by someone being part of that later fork. Old website content as well as source code project on sourceforge.net continued with Kamailio (n.r., we moved to Github to host the source code meanwhile).The reason for writing this post is that during the trip at ClueCon conference in the past few days, I met with many that were active in the community at that time and no matter what decision they did then on what project to use, they see Kamailio as a truly open source project that succeeded to build a consistent group of active developers, a vibrant community and a robust business ecosystem with many companies that offer various RTC systems/platforms or services.So I thought of playing a bit with some commands over source code three and get some numbers of what was then and where we are now:
  • number of commits in master branch as of July 28, 2018: over 27 800
  • number of commits in master branch since July 28, 2008: over 17 000
  • number of people that pushed those commits since July 28, 2008: over 300
  • number of commits in master branch since July 28, 2017: over 1 900
  • number if people that pushed commits since July 28, 2017 (during past year): over 70
  • number of modules in July 28, 2008 (Kamailio v1.4.0): 86
  • number of modules in July 28, 2018 (Kamailio v5.2.0): 223
Worth to mention that in the past 6 years, we organised our own conference, Kamailio World, and now we start the preparations for the 7th edition, to be sometime in spring of 2019, likely again in Berlin, Germany. Slides and video recordings from the past editions not only are a valuable knowledge base, but also highlight the variety of enterprises and operators relying on Kamailio.This makes it the right time to thank again to all developers, users and advocates of Kamailio project! It is the outcome of all together!Back in the summer of 2008, at the fork time, there were a few preaching, one or two louder than the others, that Kamailio was going to disappear soon, that there was no capable team to maintain or develop further the Kamailio project (although only 3 developers created or left with the fork) … and here we are, 10 years later! Maybe soon just didn’t happen yet, it has been only slightly over 0.023 seconds in the cosmic calendar!!! Within Kamailio project, we are looking forward to the next second!Enjoy the summer holidays! Thanks for flying Kamailio! 

Minimal SIP Proxy Config File

Mon, 07/23/2018 - 09:54
Just a short note to point that a minimal proxy configuration file has been recently pushed in misc/examples/mixed, respectively:It could be a good starting point, especially for testing new modules that are either developed or when starting to play with a new module, because it provides a simple SIP proxy that takes care of routing requests within dialog, but leaves out components usually enabled in production, such as authentication, nat traversal, presence, … in this way making testing on local system/network easier.Enjoy!Thanks for flying Kamailio!

ClueCon 2018

Thu, 07/12/2018 - 14:17
Not long time left until ClueCon 2018 starts in Chicago (July 23-26), the annual conference for RTC developers organised by the FreeSwtich team!Kamailio project is looking forward to meeting again the VoIP community and well known RTC developers around the world. Two members of Kamailio Admin Team will give presentations during the event:
  • Daniel-Constantin Mierla, on Tuesday, July 24, at 12:00pm – Elasticity of VoIP Platforms with Kamailio
  • Fred Posner, on Thursday, July 26, at 01:30pm – Kamailio as a SIP Edge Proxy
See the full agenda at:While you are sure you will get the latest updates about FreeSwitch and SignalWire from Anthony Mineseale II, Mike Jerris, Brian West and the rest of the team, and besides Kamailio, the event covers many other open source projects, such as Asterisk, Kazoo PBX, Fusion PBX, as well as it includes talks from renowned people in the RTC space, among them: prof. Carol Davids from IIT Chicago, James Tagg, James Body, Dan Jenkins, Simon Woodhead and Chad Hart.It is one of those events during the year than one should not miss, try to hurry in order get your ticket if you haven’t done it yet and plan to attend!Looking forward to the event!Thanks for flying Kamailio!

Kamailio v5.0.7 Released

Thu, 06/21/2018 - 13:52
Kamailio SIP Server v5.0.7 stable is out – a minor release including fixes in code and documentation since v5.0.6. The configuration file and database schema compatibility is preserved, which means you don’t have to change anything to update.Kamailio v5.0.7 is based on the latest version of GIT branch 5.0. We recommend those running previous 5.0.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 release of the v5.0 branch.Resources for Kamailio version 5.0.7Source tarballs are available at:Detailed changelog:Download via GIT: # git clone https://github.com/kamailio/kamailio kamailio
# cd kamailio
# git checkout -b 5.0 origin/5.0Relevant notes, binaries and packages will be uploaded at:Modules’ documentation:What is new in 5.0.x release series is summarized in the announcement of v5.0.0:Note: the branch 5.0 is the previous stable branch. The latest stable branch is 5.1, at this time with v5.1.4 being released out of it. Be aware that you may need to change the configuration files and database structures from 5.0.x to 5.1.x. See more details about it at:Thanks for flying Kamailio!

Next Kamailio IRC Devel Meeting

Mon, 06/18/2018 - 13:50
To discuss about the next major release of Kamailio (v5.2.0) and ongoing development, we propose an IRC devel meeting for next week, on Tuesday, Jun 26, 2018.The meeting is going to be held as usual in the #kamailio channel on freenode.net IRC network.A wiki page was created to collect the topics that are wanted to be discussed:Fell free to add there or reply to the mailing list with what you think it is relevant to discuss.Thanks for flying Kamailio!

Kamailio v5.1.4 Released

Tue, 06/05/2018 - 18:49
Kamailio SIP Server v5.1.4 stable is out – a minor release including fixes in code and documentation since v5.1.3. The configuration file and database schema compatibility is preserved, which means you don’t have to change anything to update.Kamailio® v5.1.4 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 5.1.4Source 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/5.1Relevant 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:Thanks for flying Kamailio!

New Kamailio Module: app_ruby

Thu, 05/31/2018 - 21:00
A new module has been imported in Kamailio’s git repository, respectively app_ruby. It allows embedded execution of Ruby scripts, either inline inside a native kamailio.cfg or as a KEMI routing logic.The readme of the module is available at:
The idea of the module was suggested during Kamailio World Conference 2018, couple of attendees mentioning that they are mainly Ruby developers and KEMI framework didn’t support it. With some hints given by some of them, it proved that developing such module was not that complex. It is still in early stage, but testing can be done and feedback is very appreciated.The KEMI exported functions by the core and all the other modules are already available, some work needs to be done for KSR.x submodule, which is going to be exported by app_ruby itself.Now the list of scripting languages supported by the KEMI framework are: Lua, JavaScript, Python (v2 and v3), Ruby and Squirrel.Enjoy! Thanks for flying Kamailio!

Kamailio World 2018 – Video Recordings

Mon, 05/28/2018 - 12:47
Shortly after the end of the 6th edition of Kamailio World Conference (May 14-16, 2018, in Berlin, Germany), the video recordings of the sessions were published on KamailioWorld Channel on Youtube:The channel is a valuable knowledge base, only from Kamailio World 2018 there are over 35 recorded sessions, approaching topics such as IMS/VoLTE, emergency services, use of Kamailio with Redis, SIP routing scripting with KEMI (Lua, Python, JavaScript, …), least cost routing engine, deployments and continuous integration with Docker, integration with other systems such as Asterisk, FreeSwitch, CGRateS or SipCapture. All these add to the videos from the past Kamailio World editions.If you haven’t followed the channel, you should do it and watch the videos on topics of interest for you, there are many tips and hints shared by developers and experienced users of Kamailio.Enjoy!Thanks for flying Kamailio!

Short Maintenance Timeframe For Kamailio.org

Fri, 05/25/2018 - 18:00
There will be a short maintenance timeframe for kamailio.org server schedule for later today, May 25, 2018, at 18:00 CEST (16:00 GMT). The website, including the wiki, as well as the mailing lists are going to be affected.The maintenance is expected to take no longer than 5 minutes.

Kamailio World 2018 – Event Preview

Thu, 04/26/2018 - 23:29
Two weeks and few more days till the start of Kamailio World Conference 2018, to take place again in Berlin, during May 14-16. It will be the 6th edition of the event, hosted like all previous ones by Fraunhofer Forum, courtesy of Fraunhofer Fokus Research Institute, in the beautiful city center of Berlin, just across the river from Berlin Cathedral, few minutes walking from Alexanderplatz.For this edition we had an increased number of speaking proposals, we tried to accommodate as many as possible from the very interesting ones, therefore we are introducing a group of Lightning Talks, most of them being on Monday, May 14, in the afternoon.The range of topics is also richer, covering from the common use cases for IP telephony, VoLTE/5G or WebRTC, to scalability on demand with Docker, Blockchains in telecom, use of Redis backend for data sharing among many Kamailio instances, leveraging Lua for call routing and testing or VoIP security.Related projects in the RTC world are again very well represented: Asterisk, FreeSwitch, Kazoo, SIP:Provider, Homer SIP Capture, Janus Gateway, CGRateS, FusionPBX and reSIProcate.We continue to have the two interactive sessions that never missed a Kamailio World edition so far:
  • VUC Visions coordinated by Randy Resnick – expect again an engaging debate about the future of RTC, the impact of sharing personal data and privacy matters with the Internet giants services or surprise topics brought on table by panelists and audience
  • Dangerous Demos coordinated by James Body – prepare your demo and be part of a very entertaining contest that can make you famous as well as reward your work with a prize
A novelty for this edition is an open discussion with Kamailio developers – Ask Me Anything – aiming to get the participants face to face with several main Kamailio developers to chat and clarify any doubts about using or developing the project.To see the full schedule of the event, visit:As usual, there will be couple expo spots where the sponsors are going to make demos of their products and services.We are very grateful to all our sponsors and partners that made possible this edition of Kamailio World Conference: FhG FokusFhG ForumAsiptoEvosipNetaxis Solutions2600hz and KazooConSipwiseSipgateSimwoodLODDigiumPascomEvariste SystemsNG VoiceCore Network Dynamics and VUC.Should you plan to participate at Kamailio World 2018, do not delay your registration, we expect to be again fully booked – secure your registration now:Looking forward to meeting many of you in Berlin at Kamailio World 2018!Thanks for flying Kamailio!

Kamailio v5.1.3 Released

Tue, 04/24/2018 - 23:28
Kamailio SIP Server v5.1.3 stable is out – a minor release including fixes in code and documentation since v5.1.2. The configuration file and database schema compatibility is preserved, which means you don’t have to change anything to update.Kamailio® v5.1.3 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 5.1.3Source 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/5.1Relevant 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:Do not forget about the next Kamailio World Conference, taking place in Berlin, Germany, during May 14-16, 2018. The schedule has been published, registration is open!Thanks for flying Kamailio!

Upcoming Kamailio Events – Spring To Autumn 2018

Thu, 04/19/2018 - 23:25
With a vibrant community world wide, Kamailio project is going to be represented at many events for the rest of the year, among the confirmed at this moment are:
  • Hannover Messe – April 23-26, 2018, in Hannover, Germany
  • KazooCon – April 30-May 02, 2018, in San Jose, USA
  • Kamailio World – May 14-16, 2018, in Berlin, Germany
  • CeBIT – June 11-15, 2018, in Hannover, Germany
  • CommCon – June 25-29, 2018, in Wotton House, Surrey, UK
  • ClueCon – July 23-26, 2018, in Chicago, USA
  • AstriCon – October 9-11, 2018, in Orlando, USA
Should you plan to go to any of these events, get in touch with the rest of the community via sr-users mailing list and try to organise meetups with other Kamailio folks!Thanks for flying Kamailio!

Kamailio Unit Testing Framework With Docker

Mon, 04/16/2018 - 21:00
Kamailio source tree include a set of few dozen of shell-based unit tests developed several years ago, residing inside test/unit/ of the source code tree. They were more or less not actively maintained during the past few years.Based on the interest from the community and discussions during past IRC development meetings as well as panels at Kamailio World Conference, a new effort was started recently to built a unit testing framework leveraging Docker.The first version has been published on GitHub, being available at:It has only few tests by now, but we hope to grow their number significantly in the near future. As a matter of fact, Giacomo Vacca is going to do an workshop about it at the next Kamailio World Conference, during May 14-16, in Berlin, Germany.The unit tests have been run when releasing a new stable version during the past months. They leverage tools such as sipp or sipsak for generating SIP traffic and testing routing scenarios, but some of them go beyond SIP and detect source code issues such as missing symbols or broken dependencies.The architecture of the unit testing framework is still a moving target, we aim to provide something easy for community members to contribute to as well as require for newly added modules to be accompanied by a set of basic tests.One of the main benefits it would be to have the reports of the issues that can be reproduced submitted along with a unit test. It would make it easier to troubleshoot and then after fixing it, would be tested always before releases in order to avoid regressions.Right now, a good help from community would represent converting the old unit tests to the new framework, afterwards we can decommission test/unit. The conversion should be rather easy, as we still rely on shell and the sip tools like sipp/sipsak … If you want to help here by you need clarifications or get stuck somewhere, just write to mailing list and I would be more than happy to assist. Such contributions should be submitted as pull requests in order to be easy to review:This post is to open the discussion about the unit testing framework to the broad community. To participate, write us on sr-users mailing list.Looking forward to meeting many of you at Kamailio World Conference 2018, it is only one month away!

New Kamailio module: acc_json

Wed, 04/11/2018 - 18:43
Julien Chavanton from Flowroute added recently a new module: acc_jsonThe module builds JSON documents from the accounting records and can send them to mqueue to be consumed by other processes or write to syslog. For example, when using it configured with mqueue, the consumers (e.g., started with rtimer module) can send the accounting JSON document to an external system via HTTP (see http_client or http_async_client modules), rabbitmq, nsq or even as a payload to a new SIP message (see uac module).More details about acc_json module can be read at:And do not forget about the next Kamailio World Conference, taking place in Berlin, Germany, during May 14-16, 2018. It is the place to network with Kamailio developers and community members!Thanks for flying Kamailio!

Kamailio World 2018 – Participation Grants

Tue, 03/27/2018 - 19:30
Once again, we are committing to the program from the last years to give free event passes at next Kamailio World (May 14-16, 2018) to several people from academic environment (universities or research institutes – bachelor, master or PhD programs qualify) as well as people from underrepresented groups.Kamailio has its origin in the academic environment, being started by FhG Fokus Research Institute, Berlin, Germany, evolving over the time into a world wide developed project, with an open and friendly community.If you think you are eligible and want to participate, email to <registration [at] kamailio.org> . Participation to all the content of the event (workshops, conference and social event) is free, but you will have to take care of expenses for traveling and accommodation. Write a short description about your interest in real time communications and, when it is the case what is the university or the research institute you are affiliate to.Also, if you are not a student, but you are in touch with some or have access to students forums/mailing lists, it will be very appreciated if you forward these details.All these are possible thanks to Kamailio World Conference sponsors: Evosip, 2600hz, Sipwise, Netaxis, Sipgate, FhG Fokus, Asipto, Simwood, LOD.com, NG-Voice, Evariste Systems, Digium, VoiceTel, Pascom and Core Network Dynamics.More information about Kamailio World Conference 2018 is available on the web site:Thanks for flying Kamailio!

New Kamailio module: app_python3

Tue, 03/20/2018 - 21:00
A while ago app_python3 module was added to Kamailio’s GIT master branch (to be released as stable version 5.2.0 in several months), thanks to the development efforts of Anthony Alba.Although it started from the old app_python, besides being implemented to work with Python3, the new modules added a lot of improvements, leveraging the Python3 architecture for better performances, as well as including the support for Python script reload at runtime via an RPC command (so no need to restart Kamailio — the feature was ported to app_python meanwhile). The readme of the module is available at:Now all the Kemi interpreter modules can reload the SIP routing scripts without restarting Kamailio — it works for Lua, JavaScript, Python2/3 and Squirrel languages.Happy SIP routing in Python3! You can learn more about the Kemi scripting languages at Kamailio World Conference 2018 — an workshop is dedicated to this topic!Thanks for flying Kamailio!

Kamailio At Fossasia Summit 2018

Wed, 03/14/2018 - 11:00
I, as a co-founder of Kamailio, will give a presentation at Fossassia Summit 2018, event taking place in Singapore, during March 22-25. It is the largest conference in Asia gathering a consistent group of speakers from many projects and organisations developing or supporting open source software.My presentation with the title “Kamailio – The open source framework to build your own VoIP service” is scheduled at 18:00 on Saturday, March 24, 2018. The focus is on highlighting how to build easily VoIP and realtime communication services with Kamailio in server side and other open source applications for client apps.If you attend the event or just happen to be in the city during the event, get in touch via email (miconda [at] gmail.com) in case you want to chat more about Kamailio and open source RTC.After Fossasia, the next event where to meet many folks from our community is the Kamailio World Conference, May 16-18 2018, in Berlin, Germany.

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