Quick Navigator

Search Site

Unix VPS
A - Starter
B - Basic
C - Preferred
D - Commercial
MPS - Dedicated
Previous VPSs
* Sign Up! *

Contact Us
Online Help
Domain Status
Man Pages

Virtual Servers

Topology Map

Server Agreement
Year 2038

USA Flag



Man Pages

Manual Reference Pages  -  OPENSIPS (8)


opensips - flexible and roboust SIP (RFC3261, RFC3263) server for Voice over IP (VoIP)



opensips [ -hcCrRvdDEVT ] [ -f config-file ] [ -l address ] [ -n processes-no ] [ -N tcp processes-no ] [ -b max_rcv_buf_size ] [ -m shared_mem_size ] [ -w working-dir ] [ -W method ] [ -t chroot-dir ] [ -u uid ] [ -g gid ] [ -P pid-file ] [ -i fifo-path ] [ -x socket-path ]


OpenSIPS is a SIP-based VoIP server running on most Unix-like operating systems. It supports UDP, TCP and TLS transport layers. Among its features:
* SIP Proxy Server, SIP Registrar Server, SIP Redirect Server, SIP Location Server, SIP Application Server
* Call Processing Language (RFC3880)
* ENUM support
* server side NAT traversal
* load balancing
* AAA with database (MySQL, Postgres, Unixodbc) or RADIUS backend
* audio, video, instant messaging and pressence


-h Displays a short usage description, including all available options.
-c Checks the config file and displays the aliases and listen interface list.
-C Similar to -c but in addition checks the flags of exported functions from included route blocks.
-r Uses dns to check if it is necessary to add a "received=" field to a via.
-R Same as -r but uses reverse dns.
-v Turns on via host checking when forwarding replies.
-d Turns on debugging, multiple -d increase the debug level.
-D Runs opensips in the foreground (it doesn’t fork into daemon mode).
-E Sends all the log messages to stderr.
-T Disables TCP support.
-V Displays the version number.
-f config-file Reads the configuration from config-file (default /usr/local/etc/opensips/opensips.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).
-w working-dir Specifies the working directory. In the very improbable event that opensips will crash, the core file will be generated here.
-W method Specify poll method.
-t chroot-dir Forces opensips to chroot after reading the config file.
-u uid Changes the user id under which opensips runs.
-g gid Changes the group id under which opensips runs.
-P pid-file Creates a file containing the pid of the main opensips process.
-i fifo-path Creates a fifo, useful for monitoring opensips status.
-x socket-path Creates a unix socket, useful for monitoring opensips status ( same as -i fifo-path but using instead unix sockets).




see /usr/local/share/doc/opensips/AUTHORS



Full documentation on opensips is available at

Project tracker and GIT

Mailing lists: - opensips user community - opensips development, new features and unstable version
Search for    or go to Top of page |  Section 8 |  Main Index

OpenSIPS OPENSIPS (8) 08.06.2006

Powered by GSP Visit the GSP FreeBSD Man Page Interface.
Output converted with manServer 1.07.