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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
27Feb/12

Social Networking Event, London, March 6, 2012

February 27, 2012Newsmiconda

Several folks involved in Kamailio SIP Server and VoIP in general (including Daniel-Constantin Mierla, co-founder Kamailio) are organizing a social networking event in London, during the evening of 6th of March. IfRead More…

22Feb/12

VUC Session Podcast

February 22, 2012Newsvucmiconda

In case you missed the live VoIP Users Conference about about Kamailio SIP Server, done by Daniel-Constantin Mierla (co-founder) and Alex Balashov (member of management board), on Friday, the 17th of February,Read More…

20Feb/12

Meetings in Berlin, London and Hanover

February 20, 2012Newsmiconda

Daniel-Constantin Mierla, co-founder Kamailio SIP Server project, will be visiting several VoIP-related events in the next weeks, if you want to meet and discuss about latest news and achievements of our project,Read More…

08Feb/12

Kamailio at VoIPUsersConference, Fri, Feb 17, 2012

February 8, 2012Newsmiconda

Daniel-Constantin Mierla (co-founder) and Alex Balashov (member of management board) will coordinate a new session of VoIP Users Conference (VUC) about Kamailio SIP Server, on Friday, the 17th of February, 2012, startingRead More…

31Jan/12

Kamailio v3.2.2 Released

January 31, 2012Newsmiconda

Kamailio SIP Server v3.2.2 stable is out – a minor release including fixes in code and documentation since v3.2.1 – configuration file and database compatibility is preserved. Kamailio (former OpenSER) 3.2.2 isRead More…

29Jan/12

Presentations at Fosdem 2012

January 29, 2012Newsmiconda

Fosdem 2012 includes again a dev room for Open Source Telephony, Kamailio having a dedicated presentation “Secure SIP Communication with Kamailio”, by Daniel-Constantin Mierla. Andreas Granig, also a developer of the project,Read More…

27Jan/12

Kamailio & friends dinner at Fosdem 2012

January 27, 2012Newsmiconda

Fosdem 2012 is approaching and we are going to have our traditional dinner at the event on the evening of Saturday, February 4. At this moment should be over 15 participants, manyRead More…

17Jan/12

New Module – Cassandra DB Connector

January 17, 2012Newsmiconda

Courtesy of Anca Vamanu, of 1 & 1 Internet AG, Germany, a new module is available in the development version (to become the 3.3.0 release). Here is an adapted excerpt done forRead More…

16Jan/12

New module – embedded MSRP relay

January 16, 2012Newsmiconda

A new module in development branch, named msrp, provides a MSRP routing engine, a.k.a. MSRP relay. The core specification of MSRP (Message Session Relay Protocol) is defined by RFC4975, the extensions forRead More…

14Jan/12

Per socket number of worker processes

January 14, 2012Newsmiconda

The development branch has a new feature that allow setting number of worker processes to handle received traffic per listen socket. So far there were global parameters that were applied to allRead 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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