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Continuous Development Since 2001
SER-Kamailio - the project that shaped the evolution of open source real time communications
Powering Open Real Time Communications
SIP Load Balancer, IP Telephony Engine, Least Cost Routing, SIP Firewall, Edge Proxy, SBC, Registrar and Location Service, Instant Messaging and Presence, MSRP, WebRTC, IPv4-IPV6, IMS, VoLTE
17Oct/19

Kamailio v5.3.0 Released

October 17, 2019News, Releasesmiconda

October 17, 2019: Kamailio v5.3.0 is out –  a new major release, bringing new features and improvements added during nine months of development and about two months of testing. In short, this major release brings 6Read More…

14Oct/19

Kamailio On FLOSS Weekly – Oct 16, 2019

October 14, 2019Events, Newsmiconda

Fred Posner is the guest of FLOSS Weekly this week on Wednesday (October 16, 2019) to discuss about Kamailio SIP Server project. You can tune in live and see how the sessionRead More…

10Oct/19

Kamailio v5.2.5 Released

October 10, 2019Development News, News, Releasesmiconda

Kamailio SIP Server v5.2.5 stable is out – a minor release including fixes in code and documentation since v5.2.4. The configuration file and database schema compatibility is preserved, which means you don’t haveRead More…

08Oct/19

Kamailio Development Milestone – 30 000 Commits

October 8, 2019Development News, Newsmiconda

The first commit with the code for Kamailio was done on the 3rd of September, 2001. A bit more than 18 years of continuous development, the project marked the milestone of 30000Read More…

04Oct/19

Development Is Open For Future Release Of v5.4.x Series

October 4, 2019Development News, Newsmiconda

With the creation of branch 5.3, the master branch is again open for adding new features, to be part of future release series v5.4.x. Based on the workflow used during the pastRead More…

03Oct/19

Git Branch 5.3 Has Been Created

October 3, 2019Development News, Newsmiconda

The Git branch 5.3 has been created, to be used for releasing v5.3.x series. To check out this branch, the following commands can be used: git clone https://github.com/kamailio/kamailio kamailio-5.3 cd kamailio-5.3 gitRead More…

26Sep/19

Kamailio v5.1.9 Released

September 26, 2019News, Releasesmiconda

Kamailio SIP Server v5.1.9 stable is out – a minor release including fixes in code and documentation since v5.1.8. The configuration file and database schema compatibility is preserved, which means you don’t haveRead More…

17Sep/19

Autumn 2019: Upcoming Events

September 17, 2019Events, Newsmiconda

The autumn is full of RTC-related events where you can meet Kamailio developers and community members participating or speaking about the project. Should you want to meet other Kamailio folks at theseRead More…

09Sep/19

Kamailio Developers Meeting, Nov 14-15, 2019, in Dusseldorf

September 9, 2019Development News, Newsmiconda

Kamailio SIP Server project is organizing another meeting of its developers during November 14-15, 2019, hosted again by sipgate.de in Dusseldorf, Germany. The event is intended to facilitate the interaction between Kamailio developersRead More…

05Sep/19

Development Frozen For Next Major Release v5.3.x

September 5, 2019Development News, News, Releasesmiconda

The formal notification that the development for the next major version 5.3.0 is now frozen. The focus has to be on testing the master branch. Also, the master branch should not getRead More…

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News

  • Kamailio v5.7.7 Released May 21, 2025
  • Donating To Kamailio Project April 7, 2025
  • Kamailio v5.8.6 Released March 20, 2025
  • Kamailio World 2025 – A Preview Of Sessions March 19, 2025
  • Kamailio v6.0.1 Released March 10, 2025
  • Kamailio World 2025 – First Group Of Speakers Announced February 24, 2025
  • Open Source 6G Networks for Connecting the Unconnected Workshop 2025 February 17, 2025
DONATE TO KAMAILIO

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6.0.1

(Mar 10, 2025)

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Short History

The initial name of the project was SIP Express Router (aka SER), started in 2001 by Fraunhofer Fokus Research Institute and released under GPLv2 in 2002. In 2005, OpenSER project spawned from SER and had to change the name to Kamailio in summer of 2008 due to trademark claims. During the autumn of 2008, Kamailio and SER teams decided to join back the projects and use further the Kamailio name.

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