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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
20Sep/17

Next IRC Devel Meeting

September 20, 2017Events, Newsmiconda

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 beRead More…

11Sep/17

PyFreeBilling – OSS Billing Platform

September 11, 2017Companion Software, News, Related Productsmiconda

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 projectRead More…

01Sep/17

Kamailio v5.0.3 Released

September 1, 2017News, Releases5.0, releasesmiconda

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 haveRead More…

22Aug/17

Kamailio Presentation At ClueCon 2017

August 22, 2017Events, Newsmiconda

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: https://kamailio.org/events/2017-ClueCon/Fred.Posner-Kamailio.pdf You can findRead More…

09Aug/17

ACC – SQL Define Removed And Diameter Code Relocated

August 9, 2017Module Updates, New Modules, Newsacc, billing, cdr, diametermiconda

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 thanRead More…

01Aug/17

Research On VoIP Fraud Using Kamailio As Sensor

August 1, 2017Companion Software, News, Related Products, Tips & Tricksmiconda

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 extractedRead More…

24Jul/17

ClueCon 2017

July 24, 2017Events, News, Related Productsmiconda

As every August for more than a decade, the ClueCon conference takes place again in Chicago, USA, during August 7-10, 2017. Mainly organised by the people behind FreeSwitch project, ClueCon is amongRead More…

18Jul/17

dSIPRouter – GUI For Kamailio SIP Trunking

July 18, 2017Companion Software, News, Related Productsmiconda

dSIPRouter is a web GUI that facilitates deploying Kamailio for SIP trunking services, developed by dOpensource.com and offered as open source on Github under Apache 2.0 license. It allows to manage theRead More…

10Jul/17

IvozProvider: Kamailio And Asterisk Based VoIP System

July 10, 2017Companion Software, News, Related Productsmiconda

IvozProvider is a provider oriented multilevel IP telephony solution for use on public internet or private networks. It allows multiple access levels within the same infrastructure, from operator administrator to granular brandRead More…

07Jul/17

SIREMIS – Ongoing Updates

July 7, 2017Companion Software, News, Related Productsmiconda

There is some ongoing work on Siremis (web management interface for kamailio) to make it fully compatible with Kamailio 5.0.x as well as update some of its legacy components: https://github.com/asipto/siremis So I thought toRead 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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