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


version 4.4.5 (stable)
released on 18 January 2017

Paid technical support and consulting from Iptel (

VCS Checkout




Verified by

Verified on


Verified by

Janet Casey

Verified on

19 February 2003

Leaders and contributors

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

Resources and communication

AudienceResource typeURI
DeveloperVCS Repository Webview
Bug TrackingVCS Repository Webview

Software prerequisites

Required to buildbison
Weak prerequisiteGNU install (for "make install"
Weak prerequisiteGNU tar (for 'make tar' to work)
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

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


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