SIP Express Router

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SIP Express Router (kamailio)
SIP proxy and registrar

  • " November 04, 2008 - SER joins the sip-router project "
  • " First is important to clarify: from version 3.0.0 on, Kamailio and SER are identical in terms of source code. "

SER or SIP Express Router is a very fast and flexible SIP (RFC3621) server. It handles thousands of calls per second on low-budget hadware. A C shell-like scripting language provides full control over the server's behaviour. Its modular architecture lets users load only the required functionality. The following modules are available: digest authentication, CPL scripts, instant messaging, MySQL support, a presence agent, Radius authentication, record routing, an SMS gateway, a Jabber gateway, a transaction module, a registrar, and user location.


User reference in HTML, Postscript, PDF, Text, RTF from; Programmer introduction in HTML, Postscript, PDF, Text, RTF from

Download src.tar.gz

version 4.4.5 (stable)
released on 18 January 2017

Paid technical support and consulting from Iptel (

VCS Checkout



LicenseVerified byVerified onNotes
License:GPLv2orlaterJanet Casey19 February 2003

Leaders and contributors

Juha Heinanen Contributor
Nils Ohlmeier; See also the AUTHORS file in the distribution for a complete list Contributor
Jiri Kuthan Maintainer

Resources and communication

AudienceResource typeURI
Bug TrackingVCS Repository Webview
DeveloperVCS Repository Webview

Software prerequisites

Required to buildgcc >= 2.9x; 3.[12] recommended
Weak prerequisite"make bin"
Weak prerequisitemysql
Required to buildflex
Weak prerequisitelibexpat (for the jabber module)
Required to buildmake
Weak prerequisite"make sunpkg" to work)
Required to buildsed
Weak prerequisitelibmysqlclient & libz (zlib) (for mysql support)
Required to buildtr
Required to buildbison
Weak prerequisiteGNU install (for "make install"
Weak prerequisiteGNU tar (for 'make tar' to work)

This entry (in part or in whole) was last reviewed on 27 February 2017.


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