About OpenSIPS

OpenSIPS (Open SIP Server) (former OpenSER) is a an Open Source SIP proxy/server for voice, video, IM, presence and any other SIP extensions.

OpenSIPS is a multi-functional, multi-purpose signaling SIP server - it can act as SIP Router/Switch, SIP Registrar, Application Server, Redirect Server, Load Balancer / Dispatcher, Back-to-Back User Agent, Presence Server, IM Server, Session Border Controller, SIP Front-End, NAT traversal Server, IP Gateway (SMS, XMPP) and others - see the full Set of Features.

OpenSIPS is recommended for any kind of SIP scenario / service by:
  • the high throughput - tens of thousands of CPS, millions of ā€¸simultaneous calls (see official tests)
  • the flexibility of routing and integration - routing script for implementing custom routing logics, several interfacing APIs (see the Manual)
  • the effective application building - more than 120 modules to provide features, for SIP handling, for backend operations, for integration, for routing logics (see List of Modules)

What to know more about OpenSIPS ? Come to OpenSIPS Summit and join fellow VoIP & RTC experts, developers and users from all over the world for 3+1 days of talks, inspiring presentations, workshops and trainings about OpenSIPS and the Open-Source ecosystem

OpenSIPS Trainings

The OpenSIPS project provides several types of official trainings to help you gain SIP / OpenSIPS knowledge and hands-on experience. Different flavors of trainings are available, online or onsite, for beginners or advanced studies, with general purpose or highly focus on certain topics, publicly available or private customized sessions.

For more details on the available trainings, please visit the official web page.

OpenSIPS Summits

What is OpenSIPS Summit ?

The OpenSIPS Summit is a conferencing event that aims to provide the necessary knowledge to understand and use OpenSIPS. It is an 100% OpenSIPS event focused on:
  • presenting what OpenSIPS is
  • what is OpenSIPS place in SIP environments, integration considerations
  • usage scenarios for OpenSIPS
  • real case studies with OpenSIPS
  • open discussions on OpenSIPS matters
  • open talks on future directions for OpenSIPS

Who should attend ?

If you are looking to discover, understand and evaluate OpenSIPS, the OpenSIPS Summit is the right place to be. We will answer to your questions like:
  • what OpenSIPS can do for my SIP network
  • what are the OpenSIPS capabilities, features and limits
  • how to extend, expand and enhance my SIP service with OpenSIPS.

Details and Schedule

Check the official web page of the OpenSIPS Summits.

OpenSIPS Certification

OpenSIPS project has an official certification program - OpenSIPS Certified Professional (OCP).

What is good for? - OCP is a worldwide official proof of your skills and knowledge on OpenSIPS usage (administrator).

How to get it ? - you need to pass an online exam covering SIP and OpenSIPS area.

Who issues it ? - the certificate is issued and guaranteed by OpenSIPS project via the OpenSIPS foundation.

All the details on the OpenSIPS certification can be found on

OpenSIPS Webinars

OpenSIPS project started a series of free Webinars to help people to better understand and work with OpenSIPS / OpenSER.

In the webinars section, you can find the topics of the webinars, the recordings of past webinars, the schedule for the next webinars and registration forms.

OpenSIPS Events

Events around the world where you can meet OpenSIPS folks or OpenSIPS has dedicated sessions or talks.



  • 11th of October 2013, Atlanta, USA, OpenSIPS Summit
  • 8th - 10th of October 2013, Atlanta, USA, OpenSIPS @ AstriCon
  • 5th of August 2013, Chicago, USA, OpenSIPS Summit
  • 2 & 3 February 2013, Bruxelles, Fosdem


  • 7 - 9 August, 2012, Chicago, USA, ClueCon
  • 1 - 3 February, 2012, Miami, USA, OpenSIPS Pavilon @ IT Expo Miami





  • SIPit 23th - Lannion, France, 13th to 17th Ocrober. See the event report
  • OpenSIPS Advanced Programming Course, 11th to 14th of August, Bucharest, Romania. Free registration.
  • ClueCon, 05th of August, Chicago, USA - OpenSIPS fronting and load-balancing media servers and PBXs

OpenSIPS Software Development


OpenSIPS is a highly scalable and flexible solution; it is more than a SIP router/proxy since it revolves around application-level functionality. It possesses an application interface and various modules for effective app building. Ecosmob offers cost-effective OpenSIPS development services to telecommunication operators, enterprises and network operators across the globe. 1-303-997-3139,


Web site


For how to do scripting, see the OpenSIPS Manual
For more advanced topics, see the OpenSIPS Tutorials.

Getting help

devel at lists dot opensips dot org
users at lists dot opensips dot org
See more...


Multiple trackers are available here


Development Process and status


OpenSIPS is know to work on
  • most of Linux flavours (OS used for development is mainly Debian)
  • 64b Linux flavours
  • SUN/Solaris
  • FreeBSD
  • OpenBSD
  • NetBSD

OpenSIPS and Web Interfaces

Created by: admin, Last modification: Wed 10 of Jan, 2018 (14:06 UTC) by bogdan_iancu
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