SIP Express Router (SER)
Encyclopedia
SIP Express Router is a SIP
server licensed under the GNU General Public License
. It can be configured to act as SIP registrar, proxy or redirect server. SER features presence support, RADIUS
/syslog
accounting and authorization, XML-RPC
-based remote control and others.
Web-based user provisioning, serweb, is available.
SER's performance allows it to deal with operational burdens, such as broken network components, attacks, power-up reboots and a rapidly growing user population. SER can be configured for many scenarios including small-office use, enterprise PBX replacements and carrier services.
in 2001. Part of the Fokus team
then moved, with the SER copyrights, to the newly created company iptel.org in 2004. Two of the five SER core developers and one main contributor started a new free
and open source software project named OpenSER
. Additional free and open source code was contributed by independent third parties.
SER and OpenSER followed different development paths.
SER 2.0 Release Candidate 1 (Ottendorf) was made available May 12, 2007 and is currently undergoing heavy development.
The SER project remains free and open source.
In 2005 the company IPtel.org was bought by TEKELEC
, and is responsible for the TEKELEC session router and CSCF.
In 2008, OpenSER was renamed Kamailio to avoid conflict with similar trademarks. From the OpenSER/Kamailio site: "Kamailio is a hawaiian word. Kama'ilio means talk, to converse. It was chosen for its special flavour." In November 2008 the Kamailio developers announced to team up in the future with the SER developers to create the sip-router project.
Session Initiation Protocol
The Session Initiation Protocol is an IETF-defined signaling protocol widely used for controlling communication sessions such as voice and video calls over Internet Protocol . The protocol can be used for creating, modifying and terminating two-party or multiparty sessions...
server licensed under the GNU General Public License
GNU General Public License
The GNU General Public License is the most widely used free software license, originally written by Richard Stallman for the GNU Project....
. It can be configured to act as SIP registrar, proxy or redirect server. SER features presence support, RADIUS
RADIUS
Remote Authentication Dial In User Service is a networking protocol that provides centralized Authentication, Authorization, and Accounting management for computers to connect and use a network service...
/syslog
Syslog
Syslog is a standard for computer data logging. It allows separation of the software that generates messages from the system that stores them and the software that reports and analyzes them...
accounting and authorization, XML-RPC
XML-RPC
XML-RPC is a remote procedure call protocol which uses XML to encode its calls and HTTP as a transport mechanism. "XML-RPC" also refers generically to the use of XML for remote procedure call, independently of the specific protocol...
-based remote control and others.
Web-based user provisioning, serweb, is available.
SER's performance allows it to deal with operational burdens, such as broken network components, attacks, power-up reboots and a rapidly growing user population. SER can be configured for many scenarios including small-office use, enterprise PBX replacements and carrier services.
History
SER was initially developed by FraunhoferFraunhofer Society
The Fraunhofer Society is a German research organization with 60 institutes spread throughout Germany, each focusing on different fields of applied science . It employs around 18,000, mainly scientists and engineers, with an annual research budget of about €1.65 billion...
in 2001. Part of the Fokus team
then moved, with the SER copyrights, to the newly created company iptel.org in 2004. Two of the five SER core developers and one main contributor started a new free
Free software
Free software, software libre or libre software is software that can be used, studied, and modified without restriction, and which can be copied and redistributed in modified or unmodified form either without restriction, or with restrictions that only ensure that further recipients can also do...
and open source software project named OpenSER
OpenSER
OpenSER is a Session Initiation Protocol proxy server, call router, and user agent registration server used in Voice over Internet Protocol and instant messaging applications...
. Additional free and open source code was contributed by independent third parties.
SER and OpenSER followed different development paths.
SER 2.0 Release Candidate 1 (Ottendorf) was made available May 12, 2007 and is currently undergoing heavy development.
The SER project remains free and open source.
In 2005 the company IPtel.org was bought by TEKELEC
Tekelec
Tekelec, Inc. is a US company , founded 1971 in California, but now headquartered in Morrisville, North Carolina. Tekelec produces hardware and software solutions for telecoms - land line, mobile and data.-Jean-Claude Asscher:...
, and is responsible for the TEKELEC session router and CSCF.
In 2008, OpenSER was renamed Kamailio to avoid conflict with similar trademarks. From the OpenSER/Kamailio site: "Kamailio is a hawaiian word. Kama'ilio means talk, to converse. It was chosen for its special flavour." In November 2008 the Kamailio developers announced to team up in the future with the SER developers to create the sip-router project.
External links
- SER Homepage at iptel
- OpenSER Homepage
- Kamailio Homepage
- Sippy B2BUASippy B2BUASippy B2BUA is a RFC3261-compliant Session Initiation Protocol Back-to-back user agent software distributed under the terms of GPL Free Software license.-Features:* 5,000-10,000 simultaneous sessions per server;...
- Onsip Documentation Site "Getting Started"
- SER configuration help
- RTPProxy - RTP media relay server to accompany SER for topology hiding and NAT traversal purposes