Kamailio SIP Server

Kamailio (former OpenSER) is an Open Source SIP Server.

“To know Kamailio is to know SIP.” – Fred Posner

A Quick Introduction to Kamailio, by Olle E Johansson

<iframe src=“www.slideshare.net/slideshow/embed_code/16142201” width=“427” height=“356” frameborder=“0” marginwidth=“0” marginheight=“0” scrolling=“no” style=“border:1px solid #CCC; border-width:1px; margin-bottom:5px; max-width: 100%;” allowfullscreen> </iframe> <div style=“margin-bottom:5px”> <strong> <a href=“https://www.slideshare.net/oej/kamailio-a-quick-introduction” title=“Kamailio :: A Quick Introduction” target=“_blank”>Kamailio :: A Quick Introduction</a> </strong> from <strong><a href=“http://www.slideshare.net/oej” target=“_blank”>Olle E Johansson</a></strong> </div> Note: AstLinux 1.2.0 or later is required, with custom build ==== Initial Configuration ==== The CLI (Command Line Interface) must be used to enable, and disable kamailio. Kamailio will be enabled if the /mnt/kd/kamailio/kamailio.cfg file exists. On first install, issue the command… cp -a /stat/etc/kamailio /mnt/kd/ The /mnt/kd/kamailio/ directory now exists, populated with a default configuration, including kamailio.cfg . Start kamailio with the following command, this will also create a symlink from /etc/kamailio/ → /mnt/kd/kamailio/ … service kamailio init You should see output similar to: Starting kamailio… loading modules under /usr/lib/kamailio/modules/ Listening on udp: 127.0.0.1:5065 Aliases: udp: localhost:5065 Not all configurations will require a database, though at this point you can create a SQLite database with the standard schema. Issue the command… kamdbctl create You should see output similar to: INFO: creating database /mnt/kd/kamailio/data/kamailio.sqlite3 … INFO: Core Kamailio tables succesfully created. Install presence related tables? (y/n): y INFO: creating presence tables into /mnt/kd/kamailio/data/kamailio.sqlite3 … INFO: Presence tables succesfully created. Install tables for imc cpl siptrace domainpolicy carrierroute userblacklist htable purple uac pipelimit mtree sca mohqueue rtpproxy? (y/n): y INFO: creating extra tables into /mnt/kd/kamailio/data/kamailio.sqlite3 … INFO: Extra tables succesfully created. At this point you can customize your kamailio configuration. Edit the /etc/kamailio/kamailio-local.cfg file to add switches such as “#!define WITH_ASTERISK” and interfaces/ip's to listen on. More detailed examples are described below. Apply any edits to the files in /etc/kamailio/ with the command… service kamailio restart Tip -> The web interface may be used to Edit the configuration and Restart Kamailio. While the default configuration files in the /stat/etc/kamailio/ directory are typically only used one time for initial configuration, the files are a good reference using “diff -u” with your custom configuration. ==== Configuration Examples ====
Kamailio proxy's SIP but Asterisk does the RTP directly: Example: EXTIP 10.10.50.65 - DNS 'pbx4', INTIP 192.168.110.1/24 network /etc/kamailio/kamailio-local.cfg: ####### Include Local Config ######### #!define WITH_ASTERISK auto_aliases=no alias=“pbx4” listen=udp:127.0.0.1:5060 listen=udp:10.10.50.65:5060 listen=udp:192.168.110.1:5060 /etc/asterisk/sip.conf snippet: udpbindaddr=0.0.0.0:5080 Note -> Requires firewall Pass EXT→Local UDP 10000-20000 (default asterisk rtp.conf range)
Kamailio proxy's SIP and RTP using rtpproxy: Example: EXTIP 10.10.50.65 - DNS 'pbx4', INTIP 192.168.110.1/24 network /etc/kamailio/kamailio-local.cfg: ####### Include Local Config ######### #!define WITH_NAT #!define WITH_ASTERISK auto_aliases=no alias=“pbx4” listen=udp:127.0.0.1:5060 listen=udp:10.10.50.65:5060 listen=udp:192.168.110.1:5060 /etc/asterisk/sip.conf snippet: udpbindaddr=127.0.0.1:5080 Tip -> The 'rtpproxy' daemon is automatically started when WITH_NAT is defined. Note -> Requires firewall Pass EXT→Local UDP 16384-16639 (default rtpproxy range)