Archive for the ‘News’ category

Kamailio World 2015 – The Workshops

April 15th, 2015

It is now about one month and a half till the start of Kamailio World Conference 2015. Continuing with the same event structure like in 2014, the afternoon of the first day, the 27th of May, is filled with several technical workshops. These sessions are intended to give a more hands-on perspective on the subjects, with deeper technical content.


Last year, Sipwise showed how to deploy sip:provide CE – the open source out of the box IP Telephony Operator Platform – in a matter of minutes and customize it to fit better your needs. This year, Daniel Grotti, a long time SIP and Kamailio fellow, is going to show how to enable WebRTC for sip:provider CE in order to bridge the communication between the web world and the classic SIP phones. Few other typical use cases will be approached during the session.

Carsten Bock, from NG Voice, is returning with another tutorial to show more of what can be done with Kamailio for IMS and VoLTE deployments. Besides the tutorial, the plan is to have a VoLTE testbed on site for the duration of the entire event, so the participants can test with their own devices.

After presenting at the past editions the concept and the development of CGRateS, a carrier grade open source CDR rating engine, Dan Bogos is now coming with a hands-on session about how to integrate it with Kamailio for prepaid and postpaid billing.

Ability to troubleshoot SIP routing and analyze the flows on the wire is one of the core elements required for VoIP engineers. Lorenzo Mangani, one of the co-founders of Homer SIP Capture project, is going to deliver a session on how to use existing open source tools (including Homer and sipgrep, but not limited to) to make the SIP troubleshooting process easier.

All together are providing an amazing amount of knowledge from the people with first hand experience, those that built the systems. It is a unique opportunity at Kamailio World to get face to face to interact with such people.

The content of conference days is filled with other very interesting sessions, including as well valuable technical details, presenting scalable and secure architectures or other products that can be used to complete the VoIP platforms with new features. Right now you can see details for a sections of presentations in the Schedule page.

Be sure you don’t miss Kamailio World Conference 2015, during May 27-29, in Berlin, Germany – it is the open source real time communications event in Europe!

Secure your participation and register now!

See you in Berlin!

From SQL Tables to Kamailio Hash Tables

April 9th, 2015

kamailio-tricksEloy Coto Pereiro has published recently another blog post that can be useful in the case one needs to cache content of custom database tables in Kamailio’s memory via htable module. The article uses Postgresql as database server, but same mechanism can be used for other database servers.

You can read the article at:

Using caching is a good way to improve the performances and htable is a very flexible mechanism in Kamailio configuration file, with plenty of options to tune the caching rules.


Kamailio v4.2.4 Released

April 2nd, 2015

Kamailio v 4.2Kamailio SIP Server v4.2.4 stable is out! This is a minor release including fixes in code and documentation since v4.2.3. Don’t worry about upgrading – the configuration file and database compatibility is preserved.

Kamailio (former OpenSER) v4.2.4 is based on the latest version of GIT branch 4.2, therefore those running previous 4.2.x versions are advised to upgrade. There is no change that has to be done to configuration file or database structure comparing with older v4.2.x.

Resources for Kamailio version 4.2.4

Source tarballs are available at:

Detailed changelog:

Download via GIT:

 # git clone git:// kamailio
 # cd kamailio
 # git checkout -b 4.2 origin/4.2

Binaries 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:

Looking forward to meeting many of you at Kamailio World 2015!

VUC – 8 Years

March 31st, 2015
Voip Users Conference

Voip Users Conference

The VoIP Users Conference is celebrating 8 years on the air. The weekly online meetup is going to have its 535th session during a 24 hours voipathon, starting at 12:00pm PDT (20:00 London time) on Thursday, the 2nd of April, 2015. You can find more details about the session, including the options to join via audio, video or irc, at:

Big credits to Randy Resnick, who started VUC, kept it going every week for the past years and he is still steering its future. Kamailio developers and users are glad to have been part of many sessions, presenting the latest news related to the project or joining sessions to debate hot topics of the real time communications world at the moment.

Prepare yourself to pop up online and join the VUC voipathon even for a bit, say hi and tell shortly what is new in your world of communications!

Randy and many VUC friends will be at Kamailio World Conference 2015, May 27-29, in Berlin, Germany, with VUC Visions session – be sure don’t miss the event where you can meet the people that had a relevant impact in transformation of the real time communications over the past years and work on defining their future!


Roadmap to Kamailio v4.3.0

March 30th, 2015

Kamailio 4.3The next major release of Kamailio is going to be version 4.3.0.

The plan to release it was sketched during the last IRC devel meeting. The current proposal is to publish the new version by the beginning of June 2015. Given there has to be at least one month of testing, these are our milestones:

  • Freezing the development: Wednesday, April 22, 2015
    After this, only bug fixing will happen in the development branch.
  • The week starting May 18th: If testing goes smooth, then the 4.3 branch in our GIT platform will be created
    At this point, new features can be added to the development branch again.
  • Test more in beta phase, prepare packaging, etc. and release after 2-3 weeks: One of the days between June 4 and 11

Other suggestions or adjustments are welcome! Send them to mailing list for further discussions!

Kamailio World 2015 – VoLTE Testbed and Demo

March 27th, 2015

Kamailio World ConferenceTwo months till the start of Kamailio World Conference & Exhibition 2015. Prepare yourself for three days full of interesting presentations and demos during May 27-29 in Berlin, Germany!

With the accelerated propagation of LTE and hot discussions about what 5G is going to be, definitely VoLTE is a top topic these days. Kamailio has a consistent set of IMS extensions, making it one of the most flexible options to consider for rolling out VoLTE platforms, already with live deployments in Europe, Asia, Africa and South America.

Kamailio World is the place where you can play with VoLTE yourself, FhG Fokus, Core Network Dynamics and NG Voice are preparing a testbed on site with a local LTE network and a Kamailio-based VoLTE platform. Bring your VoLTE capable device (e.g., iPhone 6 or most of the latest models with Android from Samsung, LG, Huaweii …) and experience yourself the technology of your calls in the near future, with high definition voice and proper integration with other IP based services, including WebRTC.



Don’t forget to check the other presentations, workshops and exhibitors, it is going to be one of the best events for real time communications and open source in Europe. Registration is open, be sure you secure your participation before the event is sold out!

Kamailio & Statsd – Best Practices

March 17th, 2015

kamailio-tricksEloy Coto Pereiro has published a very interesting article on his blog about using Kamailio and Statsd. Being the developer of the statsd module in Kamailio, he presents more details about the benefits and how to put all pieces together in order to have the statistics exported by Kamailio and graphs build by Graphite.

Next is a screenshot from the article of what you can get as a result:


We’ve got free Tickets for CeBIT 2015!

March 10th, 2015

Due to our presentation at CeBIT 2015 at the Open-Source Business Alliance’s Booth, we’ve received a limited number of free tickets for CeBIT 2015!

If you want a free ticket, please answer the following question:

  • What is the key benefit of deploying VoLTE in a mobile network?

Send your answer to (hint: we’ve got some benefits posted on our website, I will send the ticket by email to the 5 best answers!

Don’t miss our presentation on Kamailio & VoLTE at the booth of the Open-Source Business Alliance (, Tuesday, March 17th, ~2 PM, Hall 6, Stand H16, (410)!



New Module: TCPOPS

March 9th, 2015

The TCPops moduleCamille Oudot, from Orange, France, has recently published a new module for Kamailio, collecting a set of configuration file functions for operations on TCP/TLS connections. The module is named tcpops and the documentation is available at:

The module allows admins to enable/disable keepalives per connection as well as setting custom lifetime for each connection.

Camille has also added new functions to the usrloc module  that gives the admin the ability to close the TCP connection if the registration request that opened it has expired.

TCPOPS will be part of the next release of Kamailio, which is labelled 4.3.


Kamailio World 2015 – Registration is Open

February 16th, 2015

Kamailio World ConferenceThe registration for the 3rd edition of Kamailio World Conference & Exhibition is now open – more details and the registration form are available on the website of the event [1].

The event spans over three days, May 27-29, 2015, taking place in Berlin, Germany. The first day contains the technical tutorials, the following two days are for conference presentations and exhibition.

Details for a relevant group of speakers are already published [2], several talk proposals being still under review process. The first version of the agenda will be published in the near future.

Looking forward to meeting many of you in Berlin!

[1] –
[2] –