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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
02Oct/13

Kamailio v4.0.4 Released

October 2, 2013News, Releases4.0, 4.0.4miconda

Kamailio SIP Server v4.0.4 stable is out – a minor release including fixes in code and documentation since v4.0.0 – configuration file and database compatibility is preserved. Kamailio (former OpenSER) v4.0.4 isRead More…

25Sep/13

Kamailio at Astricon

September 25, 2013Events, Newsastriconmiconda

Kamailio project will be present at Astricon with a stand in the exhibition area. Stop by the booth #19 to chat with us or see some demos from various companies using KamailioRead More…

14Sep/13

New Developer: Charles Chance

September 14, 2013Developer Presentations, Newscchancemiconda

Kamailio project is glad to announce that a new person got developer GIT write access to repository: Charles Chance. He is for long time in the community, sending patches in the pastRead More…

02Sep/13

Next Kamailio Development IRC Meeting

September 2, 2013Newsmiconda

We are considering to have a new IRC devel meeting to plan a bit the development for the near future (among them, nail down goals and dates for next major release). TheRead More…

26Aug/13

Astricon 2013 – The 10 years celebration

August 26, 2013Events, Newsasterisk, astriconmiconda

Astricon, the Asterisk conference, celebrates big this year with its tenth edition, event to take place in Atlanta, GA, USA, during October 8-10, 2013. Using Kamailio and Asterisk is something very common,Read More…

23Aug/13

New Module: rtpproxy-ng – WebRTC to RTP

August 23, 2013Module Updates, New Modules, Newsrtpproxy-ng, sipwisemiconda

The GIT master branch of Kamailio includes now a new module – rtpproxy-ng. It is designed to be next generation RTP relay control protcol, using bencode as the base for formatting controlRead More…

15Aug/13

Kamailio v4.0.3 Released

August 15, 2013News, Releases4.0, 4.0.4, releasesmiconda

Kamailio SIP Server v4.0.3 stable is out – a minor release including fixes in code and documentation since v4.0.0 – configuration file and database compatibility is preserved. Kamailio (former OpenSER) v4.0.3 isRead More…

12Aug/13

Kamailio v3.3.5 Released

August 12, 2013News, Releases3.3, 3.3.5, releasesmiconda

Kamailio SIP Server v3.3.5 stable is out – a minor release including fixes in code and documentation since v3.3.4 – configuration file and database compatibility is preserved. Kamailio (former OpenSER) v3.3.5 isRead More…

29Jul/13

IETF87 in Berlin

July 29, 2013Events, Newsietfmiconda

This week is the 87th IETF meeting in Berlin, Germany, with over 1500 participants looking to move one step further the standardization specifications for Internet related protocols. A part of it isRead More…

28Jul/13

Kamailio – five years later

July 28, 2013Newsblog, micondamiconda

Five years ago we had to rename OpenSER to Kamailio and we continue with it since then. It’s very unlikely that a new rename or other similar disturbance will happen, we ownRead More…

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News

  • Kamailio v6.0.2 Released June 25, 2025
  • 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
DONATE TO KAMAILIO

– Download latest release –

6.0.2

(June 25, 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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