kamailio [ -hcrRvdDEVTI ] [ -f config-file ] [ -l address ] [ -n processes-no ] [ -N tcp processes-no ] [ -b max_rcv_buf_size ] [ -m shared_mem_size ] [ -M private_mem_size ] [ -w working-dir ] [ -t chroot-dir ] [ -u uid ] [ -g gid ] [ -P pid-file ] [ -G pgid-file ] [ -L modules-dir ] [ -a auto-aliases-mode ] [ -A pre-processor-define ]


kamailio or SIP Router is a very fast and configurable SIP proxy.



Displays a short usage description, including all available options.


Checks the config file and displays the aliases and listen interface list.


Uses dns to check if it is necessary to add a "received=" field to a via.


Same as -r but uses reverse dns.


Turns on via host checking when forwarding replies.


Turns on debugging, multiple -d increase the debug level.


Control how daemonize is done:

-D - do not fork (almost) anyway (run in foreground, doesn't fork into daemon mode);

-DD - do not daemonize creator (main process is not daemonized);

-DDD - daemonize (default)


Sends all the log messages to stderr.


Disables TCP support.


Displays the version number.


Displays details of internal constants and attributes.

-f config-file

Reads the configuration from config-file (default /etc/kamailio/kamailio.cfg ).

-l address

Listens on the specified address/interface. Multiple -l mean listening on multiple addresses. The address format is [proto:]address[:port], where proto = udp|tcp and address = host|ip_address|interface_name. Example: -l localhost, -l udp:, -l eth0:5062. The default behaviour is to listen on all the ipv4 interfaces.

-n processes-no

Specifies the number of children processes forked per interface (default 8).

-N tcp processes-no

Specifies the number of children processes forked to handle tcp incoming connections (by default is equal to -n ).

-b max_rcv_buf_size

Maximum receive buffer size which will not be exceeded by the auto-probing procedure even if the OS allows.

-m shared_mem_size

Size of the shared memory which will be allocated (in Megabytes).

-M private_mem_size

Size of the private memory which will be allocated per process (in Megabytes).

-w working-dir

Specifies the working directory. In the very improbable event that kamailio will crash, the core file will be generated here.

-t chroot-dir

Forces kamailio to chroot after reading the config file.

-u uid

Changes the user id under which kamailio runs.

-g gid

Changes the group id under which kamailio runs.

-P pid-file

Creates a file containing the pid of the main kamailio process.

-G pgid-file

Creates a file containing the pgid of the main kamailio process.

-L modules-dir

Specifies the directory where to look for kamailio modules (default: /usr/lib/kamailio/modules)

-a auto-aliases-mode

Enable auto-aliases with 'yes' or 'on', disable with 'no' or 'off

-A pre-processor-define

Add config pre-processor define (e.g., -A WITH_AUTH, -A N=1, -A X='"Y"')






see /usr/share/doc/kamailio/AUTHORS

RELATED TO kamailio…


Full documentation on kamailio, including configuration guidelines, FAQs and licensing conditions, is available at

For reporting bugs see

Mailing lists:

[email protected] - kamailio user community
[email protected] - kamailio development, new features and unstable version