SIP Express Router

SER - SIP Express Router

Project Website:

For a different version see: OpenSER

On Nov 04, 2008, SIP Express Router (SER) and Kamailio (OpenSER) started the SIP Router Project

SIP Express Router (ser) is a high-performance, configurable, free SIP ( RFC3261 ) server . It can act as registrar, proxy or redirect server. SER features an application-server interface, presence support, SMS gateway, SIMPLE2Jabber gateway, RADIUS/syslog accounting and authorization, server status monitoring, FCP security, etc. Web-based user provisioning, serweb, available.

Its performance allows it to deal with operational burdens, such as broken network components, attacks, power-up reboots and rapidly growing user population.

SER's configuration ability meets needs of a whole range of scenarios including small-office use, enterprise PBX replacements and carrier services.
Which version of SER is documented here?


This Wiki covers both the stable and the development branch of SER. When adding new commands, modules, and options, please also add a note on *when* this was added so that users may compare with their version date.

  • SER is an Open Source SIP server, licensed under the GPL
  • SER supports SIP over TCP and UDP according to RFC 3261
  • SER supports ENUM
  • SER supports several NAT support mechanisms
  • SER may interoperate with the jabber instant messaging architecture
  • SER supports multiple user DNS domains in parallell
  • SER is extensible with modules for various additional functions
  • SER supports DNS SRV lookups

SER supports SIP connections with more features and more scalability than Asterisk. Normally, SER would be used in conjunction with Asterisk when a SIP phone needed to connect to the PSTN.

SER modules

If "experimental" this applies to the 0.8.11 release.

Ser pages

Ser web interfaces


  • ser has been written in ANSI C. It has been extensively tested on PC/Linux and Sun/Solaris. Ports to BSD and IPAQ/Linux exist.
  • SIPatH Project - porting ser to the mipsel architecture OpenWRT - Summary - Website
  • SER OS Platforms - What Operating Systems SER works with.
  • SER Linksys NSLU2



See Also

Created by: jht2, Last modification: Mon 16 of Feb, 2009 (07:15) by admin
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