» OpenSIPS Bootcamp, Huston, US - 4th Sept 2017 Join the OpenSIPS project team for an intimate week of in-class training on OpenSIP 2.2.  » OpenSIPS Control Panel 7.2.3 released - 5th July 2017 The OpenSIPS Control Panel corresponding OpenSIPS 2.3 is now ready to be used.  » OpenSIPS 2.3 Major Release - 26th April 2017 A new cycle in OpenSIPS evolution producing the major 2.3.0 release.

OpenSIPS is 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 used by carriers, telecoms or ITSPs for solutions like Class4/5 Residential Platforms, Trunking / Wholesale, Enterprise / Virtual PBX Solutions, Session Border Controllers, Application Servers, Front-End Load Balancers, IMS Platforms, Call Centers, and many 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 ‏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)

Latest News...

OpenSIPS Control Panel 7.2.3 is released
5th of July 2017 One more dev cycle and OpenSIPS Control Panel 7.2.3 corresponding OpenSIPS 2.3 is available and ready to be used. Read more...

OpenSIPS @ ClueCon 2k17 - training and more
3rd of July 2017 One more year, one more time joining ClueCon with presentations and advanced training on OpenSIPS and FreeSWITCH integration. Read more...

Traffic balancing – the insertion into the SIP flow
28th of June 2017 After picking the right balancing logic, it is important to decide how the balancer inserts itself into the SIP flow. Read more...

Traffic balancing – load, weights, round robin ??
15th of June 2017 Many times people make a confusion when comes to the meaning of "load balancing" of SIP traffic. Read more...

OpenSIPS Summit 2017 ended!
9th of May 2017 After a full week of "everything SIP", we put together the speaker presentations, the video recordings and the photos. Read more...

Capturing beyond SIP or capturing with Homer 6!
22th of Mar 2017 How to do non-SIP data tracing (transport, logs, REST, MI) and data correlation with OpenSIPS 2.3 and Homer 6. Read more...

Advanced SIP scenarios with Event-based-Routing!
10th of Mar 2017 How to script complex scenarios like Push Notification or Call Pickup with Event-based Routing in OpenSIPS 2.3! Read more...

MongoDB driver enhance in OpenSIPS 2.3!
7th of Mar 2017 Learn all about the enhanced MongoDB driver that's going to make it into the upcoming OpenSIPS 2.3 beta! Read more...

Releases...

Minor release: OpenSIPS 2.3.1 and 2.2.5
5th of Jul 2017 All releases contain important fixes, so upgrade your installs as soon as you can! Read more...

Minor release: OpenSIPS 2.2.4 and 1.11.11
18th of May 2017 All releases contain important fixes, so upgrade your installs as soon as you can! Read more...

Major release: OpenSIPS 2.3.0
26th of Apr 2017 After several fixes and improvements, we've finally released the latest OpenSIPS 2.3 stable version! Read more...

Major release: OpenSIPS 2.3.0 beta
16th of Mar 2017 A new major step in OpenSIPS evolution - the 2.3 branch is now ready with the OpenSIPS 2.3.0 beta released! Read more...

Minor releases: OpenSIPS 2.2.3 and 1.11.10
23rd of Feb 2017 All releases contain important fixes, so upgrade your installs as soon as you can! Read more...

Minor releases: OpenSIPS 2.2.2, 2.1.5 and 1.11.9
19th of Oct 2016 All releases contain important fixes, so upgrade your installs as soon as you can! Read more...