Kamailio (successor of OpenSER and SER) is an Open Source SIP Server released under GPL, able to handle thousands of call setups per second. Kamailio used to build huge platforms for VoIP and realtime communications – presence, WebRTC, Instant messaging and other applications. In addition, it can be easily used for scaling up SIP-to-PSTN gateways, media servers or PBX systems like Asterisk, FreeSWITCH or SEMS.
Among powerful features:
The following packages are required before proceeding to the next steps.
Note: starting with version 4.3.0, Kamailio uses the directory /var/run/kamailio/ for creating FIFO and UnixSocket control files. You have to complete the section related to installation of init.d script for creating /var/run/kamailio even if you plan to start Kamailio manually from command line. The alternative is to set different paths via parameters of mi_fifo and ctl modules.
1. Getting sources from GIT
First of all, you have to create a directory on the file system where the sources will be stored.
mkdir -p /usr/local/src/kamailio-devel cd /usr/local/src/kamailio-devel
2. Tuning Make files
The first step is to generate build config files.
Next step is to enable the MySQL module. Edit modules.lst file:
nano -w modules.lst
Add db_mysql to the variable include_modules.
Save the modules.lst and exit.
NOTE: this is one mechanism to enable modules which are not compiled by default, such as lcr, dialplan, presence – add the modules to include_modules variable inside the modules.lst file.
Alternative is to set ‘include_modules’ variable to specify what extra modules to be included for compilation when building Makefile cfg:
make include_modules="db_mysql dialplan" cfg
NOTE: If you want to install everything in one directory (so you can delete all installed files at once), say /usr/local/kamailio-devel, then set PREFIX variable to the install path in ‘make cfg …’ command:
make PREFIX="/usr/local/kamailio-devel" include_modules="db_mysql dialplan" cfg
NOTE: Previous release series 3.x.x used FLAVOUR mechanism to set the name of the application to kamailio. Starting with 4.0.0, the default is kamailio. From that version, if you want to build ser flavour, use FLAVOUR=ser in the make command to generate the build configs.
3. Compile Kamailio
Once you added the mysql module to the list of enabled modules, you can compile Kamailio:
make Q=0 all
4. Install KamailioWhen the compilation is ready, install Kamailio with the following command:
5. Kamailio installation Path
The binaries and executable scripts were installed in:
These are kamailio, kamdbctl, kamctl, kamcmd commond to manage SIP Server.
To be able to use the binaries from command line, make sure that ‘/usr/local/sbin’ is set in PATH environment variable.
PATH=$PATH:/usr/local/sbin export PATH
Kamailio (OpenSER) modules are installed in:
Note: On 64 bit systems, /usr/local/lib64 may be used.
The documentation and readme files are installed in:
The man pages are installed in:
The configuration file was installed in:
6. Create MySQL database
To create the MySQL database, first edit kamctlrc file to set the database server type:
nano -w /usr/local/etc/kamailio/kamctlrc
Locate DBENGINE variable and set it to MYSQL:
You can change other values in kamctlrc file, at least it is recommended to change the default passwords for the users to be created to connect to database. Once you are done updating kamctlrc file, run the script to create the database used by Kamailio:
7. Edit configuration file
To fit your requirements for the VoIP platform, you have to edit the configuration file.
Follow the instruction in the comments to enable usage of MySQL. Basically you have to add several lines at the top of config file, like:
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#!define WITH_MYSQL #!define WITH_AUTH #!define WITH_USRLOCDB
8. The init.d script
The init.d script can be used to start/stop the Kamailio server in a nicer way. A sample of init.d script for Kamailio is provided at:
Just copy the init file into the /etc/init.d/kamailio. Then change the permisions:
chmod 755 /etc/init.d/kamailio
then edit the file updating the $DAEMON and $CFGFILE values:
You need also setup a configuration file in the /etc/default/ directory. This file can be found at:
You need to rename the file to ‘kamailio’ after you’ve copied it. Then edit this file and set RUN_KAMAILIO=yes. Edit the other options at your convenience. Create the directory for pid file:
mkdir -p /var/run/kamailio
Default setting is to run Kamailio as user “kamailio” and group “kamailio”. For that you need to create the user:
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adduser --quiet --system --group --disabled-password \ --shell /bin/false --gecos "Kamailio" \ --home /var/run/kamailio kamailio # set ownership to /var/run/kamailio chown kamailio:kamailio /var/run/kamailio
Then you can start/stop Kamailio using the following commands:
/etc/init.d/kamailio start /etc/init.d/kamailio stop
9. Ready to use
Now everything is in place. You can start the VoIP service, creating new accounts and setting the phones.
A new account can be added using ‘kamctl’ tool via ‘kamctl add
kamctl add test testpasswd email@example.com
If you are asked for SIP_DOMAIN environment variable do one of the following option.
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export SIP_DOMAIN=mysipserver.com edit '/root/.kamctlrc' and add: SIP_DOMAIN=mysipserver.com
10. MaintenanceThe maintenance process is very simple right now. You have to be user ‘root’ and execute following commands:
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cd /usr/local/src/kamailio-devel/kamailio git pull origin make all make install /etc/init.d/kamailio restart
Now you have the latest Kamailio devel running on your system.