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Monday, October 9, 2017

Freezing Development For Kamailio v5.1

The development of new features for next major release, Kamailio v5.1, is going to be frozen on Monday, October 16, 2017. The master branch received plenty of new features since the release of v5.0, which was out by end of February 2017.
Next release will bring at least 7 new modules (although we are expecting one or more to make it in during next days). Not really up to date, the list of new features is collected in the wiki page at:
After the freeze date, we start the testing phase, which is expected to last for 4 to 6 weeks, then we will have the first release in the 5.1 series, respectively the version 5.1.0.
Shall you have plans to include new features in v5.1, it is time to hurry up and have the commit or pull request ready by end of next Monday.
Thanks for flying Kamailio!

Friday, September 22, 2017

AstriCon 2017

Kamailio is going to be present at AstriCon 2017, the Asterisk User Conference and Exhibition organized by Digium, to take place in Orlando, FL, USA, during October 3-5, 2017.
Carsten BockDaniel-Constantin MierlaFred Posner and J├Âran Vinzens will have presentations about Kamailio (see the schedule here). Besides the conference sessions, Kamailio project has a booth the expo area, be sure you stop by for a chat and some cool demos of using Kamailio alone or together with Asterisk.
We expect a consistent group of people from the Kamailio community, the event being a great chance to meet with many world wide friends, especially the North American kamailians.
Looking forward to meeting many of you in Orlando by beginning of October!
Thanks for flying Kamailio!

Wednesday, September 20, 2017

Next Kamailio IRC Devel Meeting

To sync properly for the next major release of Kamailio (v5.1.0) and ongoing development, we propose an IRC devel meeting for next week, on Wednesday, Sep 27, 2017. An alternative would be the following day, Sep 28, or if there are many devs that want to attend and cannot do it these days, we can look at another date. Just propose new day and time via sr-dev mailing list.
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!

Monday, September 11, 2017

PyFreeBilling – OSS Billing Platform

We want to highlight another project that uses Kamailio, which together with FreeSwitch, is part of PyFreeBilling, an open source billing platform targeting VoIP wholesale. It is released under AGPLv3.
The project sources are hosted on Github at:
The project has its own website at:
While not tried yet here, the screenshots show a modern design and the list of features is quite impressive — next is an excerpt taken from project’s docs:
  • Customer add/modify/delete
    • IP termination
    • SIP authentication
    • Prepaid and/or postpaid
    • Realtime billing
    • Block calls on negative balance (prepaid) or balance under credit limit (postpaid)
    • Block / allow negative margin calls
    • Email alerts
    • Daily balance email to customer
    • Limit the maximum number of calls per customer and/or per gateway
    • Multiple contexts
    • Tons of media handling options
    • Powerfull ratecard engine
  • Provider add/modify/delete
    • Powerful LCR engine
    • Routing based on area code
    • CLI Routing
    • Routing decision based on quality, reliability, cost or load balancing (equal)
    • Limit max channels by each provider gateway
  • Extensive call and financial reporting screens (TBD)
  • CDR export to CSV
  • Customer panel
  • Design for scalability
Definitely worth a try!
Enjoy! Thanks for flying Kamailio!
PS. Should you develop a project related to Kamailio or be aware of such project, do not hesitate to contact us, we are glad to publish articles about them! 

Friday, September 1, 2017

Kamailio v5.0.3 Released

Kamailio SIP Server v5.0.3 stable is out – a minor release including fixes in code and documentation since v5.0.2. The configuration file and database schema compatibility is preserved, which means you don’t have to change anything to update.
Kamailio v5.0.3 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 5.0.3
Source 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/5.0
Relevant 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:
Thanks for flying Kamailio!

Tuesday, August 22, 2017

Kamailio Presentation At ClueCon 2017

Fred Posner, our big friend (and baker from Florida), participated to ClueCon Conference 2017 and gave a presentation about Kamailio SIP Server. The slides deck is available at:
You can find some good hints and tips about using Kamailio for building intelligent SIP routing.
As usual, we would like to thank for spending time and financial resources for promoting Kamailio. Should you present at a large world wide event or small meetup in your area and have some notes about Kamailio, we definitely appreciate it a lot and we are more than happy to host a copy of the slides on our events directory:
Just get in touch with us!
Thank you for flying Kamailio!

Wednesday, August 9, 2017

ACC – SQL Define Removed And Diameter Code Relocated

The ACC module (accounting) in Kamailio got a bit of clean up, therefore be aware of following changes:
  • (1) the define conditions on SQL_ACC were removed — this was enabled for more than 10 years and only made the code look complex and hard to follow up its logic.
  • (2) the code related to DIAMETER accounting was relocated to acc_diameter (new) module. It was a consistent size of code that was not enabled for sooo… long. It is now a dedicated module, similar to acc_radius. The diameter accounting code, even a new module now, is in the same stage, compiling but not tested, in pair with auth_diameter module, it may work, but very likely not.
In summary, what’s important for those using the acc module — it offers the same functionality as it was enabled by default in the past 10 years or more: writing accounting records to syslog and sql databases — only the unused code was relocated.
The acc module is now slimmer, only with the code that it needs, therefore easier to maintain and enhance for the future. For any issue, as usual open a report on Github project portal.
Thanks for flying Kamailio!

Tuesday, August 1, 2017

Research On VoIP Fraud Using Kamailio As Sensor

Konstantin Tumalevich has posted an article via GitHub about his research done on VoIP fraud using Kamailio as a sensor, along with other VoIP applications such as Asterisk.
Some interesting facts extracted from the article:
For research, I created honeypot what mimics vulnerable PBX.
For emulation, I used Kamailio nodes that send any calls to termination node and answers to OPTIONS and REGISTER.
For every INVITE I recorded From, To, UA, Call-ID, IP and call time.
Termination node has Kamailio with Flask app for preprocessing calls and Asterisk for topology hiding when calls sent to PSTN.
All calls with a cost of more than 2 cents per minute were rejected with code 486.
I used 4 sensor nodes located in NL, DE, SG and NYC.
For 18 days, 254805 INVITE were collected from 296 different IP’s. On average, 860 INVITEs were received from an IP.
Reports about top source IPs, countries of origin and the operator as well as related graphs can be found in the conclusions of the research. Few hints are also provided about how to protect better.
You can read the entire article at:
Enjoy!
Thanks for flying Kamailio!