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Free SIP service since early 2000 with option to host personal domain.

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← OpenRCS.com VoIPUser.org →

News

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
Maintenance Work For kamailio.org Server On Feb 18, 2025 February 12, 2025
Sipexer v1.2.0 Released February 10, 2025
Kamailio v6.0.0 Released January 29, 2025
Kamailio v5.8.5 Released January 23, 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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