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+# History: 15 Years SER-Kamailio
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+ Date: Sep 2, 2016
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+ Data compiled by: Daniel-Constantin Mierla
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+
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+## Overview
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+
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+**SIP Express Router** (aka **SER**) is the initial name of the project
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+that emerged into Kamailio starting with 2008. It is a high-performance,
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+configurable, free Session Initiation Protocol (SIP) server licensed
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+under the open-source GNU license, offering a large set of features.
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+Started in 2001, before the publishing of RFC3261 (SIP v2.0) in summer
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+of 2002, Kamailio-SER pioneered the development of many SIP extensions
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+and pushed further the real-time communications over IP.
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+
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+Initial project web site was:
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+
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+- <http://iptel.org/ser>
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+
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+Used over the time:
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+
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+- <http://sip-router.org>
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+
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+Now the web site is:
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+
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+- <http://www.kamailio.org>
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+
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+It is the oldest and most robust open source SIP server, routing
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+**billions of VoIP minutes every month world wide**, being used from
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+Telcos and Carriers to ITSP and SOHO environments. If you haven't heard
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+of it so far, it is very likely because your VoIP provider routes the
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+calls fast and reliable with SER-based SIP servers, so you don't need to
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+build your own system.
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+
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+First source code commit of SER-Kamailio was done **15 years ago**:
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+**Sep 3, 2001**. According to GIT log, first three commits were:
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+
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+ git log --pretty=format:"%h%x09%an%x09%ad%x09%s" --reverse | head -3
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+
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+ 512dcd9 Andrei Pelinescu-Onciul Mon Sep 3 21:27:11 2001 +0000 Initial revision
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+ 888ca09 Andrei Pelinescu-Onciul Tue Sep 4 01:41:39 2001 +0000 parser seems to work
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+ e60a972 Andrei Pelinescu-Onciul Tue Sep 4 20:55:41 2001 +0000 First working release
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+
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+That is \*\* 5479 days\*\* of continuous development, with hundreds of
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+contributors, estimated cost of development: **over 18 000 000 USD**
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+(averaged 70000USD/year/developer and 261 person-years).
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+
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+## Summary of Evolution
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+
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+- **September 2001** - initial commit, SER was then developed for
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+ about one year internally at FhG FOKUS Institute, Berlin, Germany
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+- **Autumn 2002** - SER was released as GPL, code published on
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+ BerliOS: <http://developer.berlios.de/projects/ser/>
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+- **June 2005** - [OpenSER](http://www.openser-project.org) forked
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+ from SER, code hosted by Source Forge:
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+ <http://sourceforge.net/projects/openser/>
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+- **July 2008** - OpenSER was renamed to
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+ [Kamailio](http://www.kamailio.org)
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+- **November 2008** - SER and Kamailio teams decide to join
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+ development efforts and merge the source code trees of the two
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+ applications
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+ - development portal for both changed to: <http://sip-router.org>
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+- **January 2010** - version 3.0.0 is released, from a source code
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+ tree containing both SER and Kamailio
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+- **Septeber 2011** - the project celebrates 10 years of development
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+- **March 2013** - version 4.4.0 is released, project switching to use
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+ only Kamailio name for public versions
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+- **Septeber 2016** - the project celebrates 15 years of development
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+- **Autumn 2016** - the project is preparing the release of v5.0.0
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+
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+## Releases
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+
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+Kamailio Only:
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+
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+- \* 0.9.4 - 2005-06-14
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+- 0.9.5 - 2005-07-01
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+- 1.0.0 - 2006-02-27
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+- 1.0.1 - 2006-02-27
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+- 1.1.0 - 2007-03-12
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+- 1.1.1 - 2007-03-12
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+- 1.2.0 - 2007-03-12
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+- 1.2.1 - 2007-05-23
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+- 1.2.2 - 2008-09-17
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+- 1.2.3 - 2008-09-17
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+- 1.3.0 - 2007-12-13
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+- 1.3.1 - 2008-03-11
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+- 1.3.2 - 2008-05-15
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+- 1.3.3 - 2008-11-24
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+- 1.3.4 - 2008-11-24
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+- 1.4.0 - 2008-09-25
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+- 1.4.1 - 2008-10-23
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+- 1.4.2 - 2008-10-23
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+- 1.4.3 - 2008-12-16
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+- 1.4.4 - 2009-03-25
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+- 1.4.5 - 2010-02-02
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+- 1.5.0 - 2009-03-02
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+- 1.5.1 - 2009-04-29
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+- 1.5.2 - 2009-07-14
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+- 1.5.3 - 2009-10-21
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+- 1.5.4 - 2010-02-02
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+- 1.5.5 - 2010-10-20
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+- 3.0.0 - 2010-01-11
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+- 3.0.1 - 2010-03-08
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+- 3.0.2 - 2010-05-27
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+- 3.0.3 - 2010-08-19
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+- 3.0.4 - 2010-10-20
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+- 3.1.0 - 2010-10-06
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+- 3.1.1 - 2010-12-02
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+- 3.1.2 - 2011-04-04
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+- 3.1.3 - 2011-04-04
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+- 3.1.4 - 2011-05-26
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+- 3.1.5 - 2011-09-14
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+- 3.1.6 - 2012-07-14
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+- 3.2.0 - 2011-10-18
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+- 3.2.1 - 2011-12-01
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+- 3.2.2 - 2012-01-31
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+- 3.2.3 - 2012-04-19
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+- 3.2.4 - 2012-07-19
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+- 3.3.0 - 2012-06-18
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+- 3.3.1 - 2012-08-02
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+- 3.3.2 - 2012-10-16
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+- 3.3.3 - 2012-12-18
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+- 3.3.4 - 2013-02-25
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+- 3.3.5 - 2013-08-15
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+- 3.3.6 - 2013-12-19
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+- 3.3.7 - 2014-03-06
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+- 4.0.0 - 2013-03-11
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+- 4.0.1 - 2013-04-25
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+- 4.0.2 - 2013-06-12
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+- 4.0.3 - 2013-08-15
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+- 4.0.4 - 2013-10-02
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+- 4.0.5 - 2013-12-20
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+- 4.0.6 - 2014-03-06
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+- 4.0.7 - 2014-11-07
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+- 4.1.0 - 2013-12-04
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+- 4.1.1 - 2014-01-09
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+- 4.1.2 - 2014-03-06
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+- 4.1.3 - 2014-04-24
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+- 4.1.4 - 2014-06-12
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+- 4.1.5 - 2014-08-06
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+- 4.1.6 - 2014-09-18
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+- 4.1.7 - 2014-11-06
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+- 4.1.8 - 2015-02-05
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+- 4.1.9 - 2015-12-18
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+- 4.2.0 - 2014-10-15
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+- 4.2.1 - 2014-11-11
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+- 4.2.2 - 2015-01-08
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+- 4.2.3 - 2015-02-10
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+- 4.2.4 - 2015-04-02
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+- 4.2.5 - 2015-05-19
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+- 4.2.6 - 2015-07-30
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+- 4.2.7 - 2015-12-17
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+- 4.2.8 - 2016-07-05
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+- 4.3.0 - 2015-06-10
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+- 4.3.1 - 2015-07-20
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+- 4.3.2 - 2015-09-10
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+- 4.3.3 - 2015-10-02
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+- 4.3.4 - 2015-11-25
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+- 4.3.5 - 2016-03-03
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+- 4.3.6 - 2016-06-30
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+- 4.4.0 - 2016-03-30
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+- 4.4.1 - 2016-05-10
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+- 4.4.2 - 2016-06-28
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