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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.comBlogger750125
Updated: 11 min 39 sec ago

Kamailio 2015 Awards

Mon, 03/28/2016 - 23:30
Here we are, the 9th edition of Kamailio Awards granted for the activity related to Kamailio and Real Time Communications during the previous year, respectively 2015. Continuing the tradition, there are two winners for each category.

During 2015, Kamailio v4.3 was released and most of the development for upcoming v4.4 was done  (to be released on March 30, 2016). The 3rd edition of Kamailio World Conference was organized, gathering the community of developers and enterprises relying on Kamailio and its ecosystem.

The 2016 is going to be a reference year in the evolution of the project. It marks 15 years of the development for Kamailio project, maybe not a smooth path always, but with amazing results after all these years. We will celebrate it at the 4th Kamailio World Conference, during May 18-20, 2016, in Berlin, Germany.

More of 2016 - after the release of v4.4, the resources will be allocated to design and bring Kamailio to the next level of flexibility and scalability, a project already code-named Kamailio 5.0.

To cut it short here, expect an amazing evolution of Kamailio in the near future. Now back to the awards.

Next are the categories and the winners!
    New Contributions
    • http client modules - http_client and http_async_client - split development between Olle E. Johansson, Hugh Waite, Federico Cabiddu and Camille Oudout - the two modules were developed separately and by that it shows that interactions with external applications via HTTP API are very important for building modern telephony systems.
    • tlsf (two-level segregate fit) memory manager - a core component developed by Camille Oudout (from Libon, Orange, France), bringing in an alternative to the existing memory managers, which relies on a modern management algorithm for memory operations (alloc, free and join) that is more suitable for handling various special cases of SIP server deployments with large number of TLS connections. This contribution "forced" another important enhancement: the addition of the command line option to select the desired memory manager at Kamailio startup.
    Developer Remarks
    • Hugh Waite (Xura, UK) - a long term developer of Kamailio, besides the contributions to HTTP client implementation already mentioned above, he was very active on adding new features or tracking issues to many other modules, such as websocket (adding support for SIP fragmentation), pv, tm, utils, app_lua, json, sdpops, a.s.o.
    • Stefan Mititelu (1&1 Germany) - he had a consistent amount of commits to various components, including support for database management of a RTPEngine farm, enhancements to debugger module to print the new SIP message after the config changes, refactoring of tm statistics, per module memory usage summary, a.s.o.
    Advocating
    • Dragos Vingarzan - the initial author of IMS module in Kamailio (developed via OpenIMSCore), Dragos helped the project to organize many developer and community meetings at FhG Fokus and continue to promote the project via Core Network Dynamics company.
    • Simon Woodhead - a long time player in the VoIP and SMS businesses with Simwood eSMS Ltd, Simon has been a promoter of Kamailio, presenting at various events and publishing articles about interesting topics such as VoIP fraud or building mobile services.
    Technical Support
    • Emmanuel Schmidbauer - besides several patches and activity on the mailing lists, Emmanuel was very active on #Kamailio's IRC channel, answering to and guiding the participats to solve their issues in real time.
    • Mikko Lehto - active in Kamailio community for several years, answering on mailing lists, Mikko had also a consistent contribution by compiling Kamailio on different operating systems, pushing patches that cleaned up a lot of specific warnings.
    Blogging
    • Gholamreza Sabery - for publishing the Ansible playbooks and related files for an Active-Passive Kamailio auto-deployment using Pacemaker and Corosync.
    • blog.irontec.com - for publishing an ample tutorial about horizontal scaling of VoIP platforms using Kamailio and Asterisk with Docker (in Spanish, but configs and commands can be taken directly, text can be easily translated with web tools).
    Related Projects
    • matrix.org - an admirable effort led by Matthew Hodgson to specify a protocol and build an open source platform to connect heterogeneous RTC systems, with a connector for SIP and Kamailio. Given the trend of big companies to build walled garden RTC services, Matrix is aiming to provide the framework that will make it easier to interconnect, relying on extensible technologies such as WebRTC and HTTP/JSON APIs.
    • sngrep - the swiss army knife of sniffing and analyzing the SIP traffic on a terminal (e.g., when connected via ssh). It can draw diagrams of SIP dialogs (VoIP calls) with updates in real time, it also provides advanced match, search and sort criteria. If you haven't used so far, think of it like a wireshark for SIP traffic in the terminal.
    Business Initiatives
    • Pascom, Germany - the vendor of Mobydick - an Asterisk-based PBX system - with a cloud service leveraging Kamailio for security and scalability
    • VoiceTel, USA - an IP telephony operator in North America, using Kamailio to take care of filtering bad and good traffic and load balance across media servers farms
    Events
    • IIT RTC Conference - one of the few events out there that still tries to cover a broad range of RTC topics, with a tight relation to research and academic environments, and a particular focus on future needs of communications.
    • TAD Hack - Telecom Application Developer Hackaton - started and mainly organized by Alan Quayle, it is a series of events along year long taking place in different locations across the world, even allowing remote participants. The events try to promote innovation in telecom space by getting together developers of different applications, platforms and services. Developers and friends of Kamailio are often participating, among them Carsten Bock, Federico Cabiddu, Giacomo Vacca, James Body, Randy Resnick.
    Friends of Kamailio
    • Carol Davids - Professor at Illinois Institute of Technology, Chicago, USA - under her supervision, many students of the Master program at IIT are designing and developing new concepts for RTC using open source applications, involving Kamailio in many cases. Actually IIT has been awarded in the past as an academic entity, due to a number of research papers that were published by their members, where Kamailio has been used during the proceedings.
    • Markus Monka - Head of Infrastructure IT/Telco at sipgate, Germany - an early adopter of SER, continuing with OpenSER and Kamailio, sipgate is known as one of the companies pioneering the VoIP services for residential and business customers, serving several hundred thousands of active connections. Markus has been with the company for more than 10 years, supporting and assisting Kamailio to organize many of its events during the past years. He coordinates the team that contributed many patches and documentations back to the projects.
    This is it for 2014. If you want to check the previous turn of awards, visit:
      Looking forward to meeting many of you soon in Berlin, during May 18-20, 2016, at the 4th edition of Kamailio World Conference & Exhibition, to celebrate 15 years of development for Kamailio Project.
      Note: I am solely selecting the winners, with no involvement of Kamailio project members, based on what I observed and has risen my interest during 2015.  Also, a rule that I try to enforce is that a winner of a category in the past will not be awarded again same category (a winner one time is a winner for ever).

      Kamailio World 2016 – Student Grants

      Tue, 03/22/2016 - 23:08
      Continuing the program from last years, based on the roots and the tight relation of Kamailio project with the academic environment, we are offering three seats at Kamailio World Conference, May 18-20, 2016, in Berlin, to students enrolled in universities or research institutes (both bachelor and PhD programs qualify). Last year we had students participating from Austria, Slovakia and Netherlands.If you are a student and want to participate, write an email to registration@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 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.More information about Kamailio World is available on the web site:Looking forward to meeting many of you at Kamailio World 2016!

      Releasing Kamailio v4.4.0

      Fri, 03/18/2016 - 23:06
      With no major issues reported, Kamailio is on a good track for releasing stable v4.4.0. Next week a lot of people prepare for Easter, therefore I propose to do the release on Wednesday, March 30, 2016. If new things pop up, the exact date can be adjusted a bit before or after the current proposal.Any new discovered issue should be reported to bug trucker:Help to complete the upgrade guide would be very appreciated:A draft list of what is new in 4.4 is already available at:Enjoy upcoming v4.4.0 and thank you for flying Kamailio!

      Kamailio World 2016 – The Speakers

      Tue, 03/15/2016 - 14:12
      Most of the accepted speakers at Kamailio World 2016 are now listed on the event website. There are many new speakers, several involved in the early stage of SER-Kamailio development, ready to reveal insides about project evolution. See more details at:The range of topics is again very broad, approaching scalability and security of VoIP platforms, WebRTC and VoLTE, various use case for Kamailio as well as integration with related projects such as Asterisk, FreeSwitch or SEMS.The majority of the speakers cover more than a decade of experience for each in real time communication services, being involved in building the past and shaping the future of this field. Another important reason to not miss the event!Join us for celebrating 15 years of development for Kamailio project!

      Upcoming Events

      Mon, 03/14/2016 - 14:11
      This year started full engine with members of Kamailio community being present at various events world wide during January and February 2016 – among them:
      • ITExpo and Digium Asterisk World in USA, where Fred Posner had a presentation about integration of Asterisk and Kamailio
      • Fosdem in Brussels, Belgium, with presentations from Daniel-Constantin Mierla and Olle E. Johansson in the RTC Dev Room and an ad-hoc Kamailio developers meeting to discuss about version 5.0 with Camille Oudout, Federico Cabiddu, Daniel-Constantin Mierla, Giacomo Vacca, Henning Westerholt, Olle E. Johansson, Torey Searle
      • Kamailio Development Workshop, Alicante, Spain, coordinated by Daniel-Constantin Mierla
      • Call Center World, in Berlin, Germany, with Asipto participating to the event
      • Mobile World Congress, in Barcelona, Spain, with our friends from Quobis and Voztelecom around at the show
      • WebRTC Barcelona Meetup, co-organized by Quobis and Victor Pascual Avila at University of Barcelona
      For the rest of the spring, couple of events will have some of the Kamailio friends engaged:Expect more to be added in the list very soon! Even if you don’t participate to the events, if you are in the area it may be a good opportunity to meet with other Kamailio community members for a chat and few drinks! Announce your availability via Kamailio mailing lists.Also, should you participate to an event related to VoIP, SIP, WebRTC, VoLTE and Kamailio is involved in a way or another, do not hesitate to contact us in order to be listed on the project website.Thank you for flying Kamailio!Looking forward to meeting many of you at Kamailio World in Berlin and other events around the globe!

      Branch for Kamailio 4.4.x Series

      Fri, 03/11/2016 - 14:09
      The GIT branch 4.4 was created, it will host the Kamailio release series 4.4.x. To get this branch from GIT, you can use:git clone https://github.com/kamailio/kamailio.git kamailio
      cd kamailio
      git checkout -b 4.4 origin/4.4Notes about installing Kamailio from this branch are available at:Hopefully in about two weeks or so the full release of 4.4.0 will be out.From now on, any corresponding fix has to be pushed first to master branch and then cherry-picked to branch 4.4. No new features can get in branch 4.4. Enhancements to documentation or helping tools are still allowed.

      Kamailio v4.3.5 Released

      Thu, 03/03/2016 - 18:40
      Kamailio SIP Server v4.3.5 stable is out – a minor release including fixes in code and documentation since v4.3.4. The configuration file and database schema compatibility is preserved.Kamailio (former OpenSER) v4.3.5 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 4.3.5Source 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:Thanks for flying Kamailio and looking forward to meeting many of you at Kamailio World Conference 2016!

      Kamailio – the IMS Getting Started Box

      Fri, 02/12/2016 - 12:11
      Wondered how you can quickly start your own IMS platform? Thanks to Franz Edler, from University of Applied Sciences, Vienna, Austria, a set of configuration files as well as a WMware Debian image were made available for those that want to start building an IMS platform using Kamailio. Read this documentation written by Franz (original version in pdf format can be downloaded from here)!Kamailio IMS in a BoxHere is a stripped-down version of Kamailio-IMS system – it means that the IMS functions have been reduced to the core functions, all advanced functions like NAT, RTP-relay, antiflood, capturing, dispatching etc… have been omitted (disabled). It is a good starting point for educational purposes. All three servers (P-CSCF, I-CSCF and S-CSCF) and the HSS (from original Fraunhofer OpenIMScore) are running on one machine. The clients are typically provided by the host system.The additional functions which are included in the existing config-files are disabled in a first step and may be added (enabled) gradually. Also an application server (IMS-AS) may be easily added as a further Kamailio instance. This is perfect for educational purpose, if you want to become an IMS expert.The benefit is that all these servers and function are running on one physical machine. There is a VMware image available for this configuration and also the log-file and all relevant config-files in a separate zip-file. Now you can start immediately with the VMware image or – as I always suggest – do it yourself (compile and configure) by following the steps documented in the log-file.The figure below shows the configuration I used:All parameters and passwords used are documented in the log-file.If anything is missing or if you have hints for correction or improvement, just let me know via the sr-users@lists.sip-router.org mailing list.All files are available via dropbox:Good luck, FranzNR: the version above was slightly edited for web and few more explicit details.Read previous articles about Kamailio and IMS!If you build some specific systems using Kamailio and want to share the details with the community, do not hesitate to contact us, we will be more than happy to post an article about it on Kamailio web site!Thanks for flying Kamailio and looking forward to meeting many of you at Kamailio World 2016!

      Call Center World 2016

      Thu, 02/11/2016 - 12:07
      The Call Center World 2016 trade show takes place again in Berlin, during February 22-25, 2016.


      While not directly linked to call center solutions, Kamailio SIP Server is often deployed along side a call center system to add more flexibility in SIP routing, redundancy and perform SIP firewalling.

      Should you come around and want to meet, contact us at asipto.com.

      Kamailio Advanced Training, March 7-9, 2016, in Berlin

      Tue, 02/09/2016 - 11:55
      Next European edition of Kamailio Advanced Training will take place in Berlin, Germany, during March 7-9, 2016.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 World 2016 – Registration is Open

      Mon, 02/08/2016 - 17:30
      The registration for the 4th 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 18-20, 2016, taking place in Berlin, Germany. The first day contains the technical tutorials, the following two days are for conference presentations and exhibition.The Call for Speakers is still in progress, however, a short list with a relevant group of speakers was made available [2]. The first version of the agenda will be published in the near future, for now you ca see the structure of the event.Looking forward to meeting many of you in Berlin!

      Kamailio v4.4 – Development Frozen

      Thu, 02/04/2016 - 17:26
      The development (master) branch of Kamailio enters now in pre-release phase for version 4.4.0. Therefore, no new feature are going to be pushed to master until a dedicated branch for 4.4 is created (in about 4 weeks or so). The full release should be out by mid of March 2016.If you are a registered developer and in doubt to push or not a commit to master, push it first on a personal branch (or attach to an email) and discuss it on sr-dev. The new modules can be a bit more dynamic if there is need to get them to the right shape (e.g., like decision to rename functions, parameters or adjust database structure).We hope to get many people involved in testing, to reach a stable state before releasing 4.4.0. If you want to get involved and need assistance, don’t hesitate to write to mailing lists. Based on my quick review, there were no major changes to old core components, meaning we should have preserved quite a good level of stability overall.Help with updating the wiki page for migration from 4.3 to 4.4 as well as what is new in 4.4 is very appreciated. We will post updates about them very soon.Many thanks to everyone involved in development of 4.4 and the early testers that played with master branch so far.Thank you for flying Kamailio!Looking forward to meeting many of you at Kamailio World 2016!

      Kamailio Development Workshop, Feb 2016

      Thu, 01/21/2016 - 00:21
      Last edition of Kamailio Development Workshop happened about three years ago. Several people asked about it from time to time, therefore I thought of trying to organize a new edition. Rather short term by now due to various constraints, so the plan is to do it again in Alicante, Spain, during February 15-16, 2016.More details are available at:Besides spending 2 days digging into Kamailio C code, such event is also good for discovering and sharing development resources among participants, as well as meeting people from community — at the previous editions we met for first time with Victor Seva, Vicente Hernando and Seudin Kasumovic, which in turn contributed a lot of Kamailio code afterwards. It will be also testing phase for upcoming major release v4.4.0, maybe we can plan some stress testing session on site.Right now the goal is to see if there is any interest in such event in order to nail down organizing it or not. Should anyone consider to participate, write an email to:registration [at] kamailio.orgThank you for flying Kamailio!

      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!

      FOSDEM 2016

      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!

      miconda.eu

      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:

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