Home - Kamailio (ex OpenSER) SIP Server

Kamailio - the Open Source SIP Server

November 04, 2008 - Kamailio joins the SIP Router project. See more details here...

Kamailio 1.4.2 released on October 23, 2008. See release notes here...

Kamailio 1.4.0 released on August 7, 2008.

A new major release under the new name: Kamailio 1.4.0 is out. It includes lot of improvements in terms of performance and new features. See release notes here...

2008-07-28, OpenSER renamed to Kamailio

OpenSER project and the community around it have grown considerably in the past three years. Because of its extensive development and high adoption rate, conflicting interests related to the OpenSER name and similar trademarks emerged.

Consequently, we have been forced to find a new name for the project that stands on itself and represent the project in its future expression.

Starting with version 1.4, OpenSER is called Kamailio. Existing OpenSER users can keep on enjoying the benefits of the best open source SIP server available on the market under this new name.

All project infrastructure like the website and mailing lists are accessible under the kamailio.org domain.

Kamailio is a hawaiian word. Kama'ilio means talk, to converse. It was chosen for its special flavour. It is hopefully easy to remember and the meaning fits well with the project purpose. We hope you like it too!

Updates about renaming, domain names and management are available in History page .

You can listen the new name: male1 - male2 - female

Allison Smith 's voice: kamailio1 - kamailio2 .

KAMAILIO (OpenSER) is a mature and flexible open source SIP server (RFC3261). It can be used on systems with limitted resources as well as on carrier grade servers, scaling to up to thousands call setups per second. It is written in pure C for Unix/Linux-like systems with architecture specific optimizations to offer high performances. It is customizable, being able to feature as fast load balancer; SIP server flavours: registrar, location server, proxy server, redirect server; gateway to SMS/XMPP; or advanced VoIP application server.

KAMAILIO (OpenSER) aims to be a collaborative project of its users to develop secure and extensible SIP server to provide modern VoIP services. Anyone can contribute to one of next items:
- code development - KAMAILIO (OpenSER) core, modules and adjacent applications
- documentation - writing or enriching documentation
- miscellaneous - different management tasks (e.g., web site maintenance)
- ideas - new ideas bring brilliant solutions

Basic rules for contributions and the list of contributions you can read in this page .

Get involved:

users @ lists.kamailio.org - KAMAILIO(OpenSER) users mailing list.
devel @ lists.kamailio.org - KAMAILIO(OpenSER) developement mailing list.
business @ lists.kamailio.org - KAMAILIO(OpenSER)/VoIP business related forum - see rules here.
http://www.voipuser.org/forum_view_24.html - KAMAILIO (OpenSER) public web forum.
http://voip-info.org/wiki/view/OpenSER - VoIP-Info.org page

KAMAILIO(OpenSER) can be:

SIP proxy server
SIP registrar server
SIP location server
SIP application server
SIP dispatcher server
full capabilities list is available in features page

KAMAILIO (OpenSER) cannot be:

SIP phone
media server
back-to-back user agent

Resources:

- OpenSER History
- OpenSER News
- OpenSER Download
- OpenSER Documentation