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» OpenSIPS eBootcamp pre-Registration - 31 May 2023
We plan two training sessions, one for Europe-America timezones, another for Asia-Pacific timezones. Help us with planning and sizing by filling in the pre-registration form
» Beta release for OpenSIPS 3.4 - 17 May 2023
The new major 3.4 version is ready, bringing performance and conformity testing, B2B improvements, better logging support and many more. 
 


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)


OpenSIPS 3.2 release was subject of a security audit, making everything safer and more secure for everybody.

» Download OpenSIPS
 3.4.0-beta - beta release
3.3.5 - stable release
3.2.12 - stable LTS release
3.1.15 - stable LTS release
» OpenSIPS Blog
 Stay connected to the OpenSIPS project via our official blog
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 Support OpenSIPS by making a donation to the project.
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Latest News...

SIPssert and the journey of testing OpenSIPS
27th of April 2023 Check out how OpenSIPS is already benefiting from the SIPssert testing framework Read more...


SIPssert – an OpenSIPS Testing Framework
04th of April 2023 Test OpenSIPS code or SIP platform by writing your own tests with custom SIP flows and DB / MI / API interactions. Read more...


B2BUA Bridging Improvements In OpenSIPS 3.4
23rf of March 2023 The re-bridging mechanism of the B2B was reworked to make it more reliable, easier to interop and with on-hold & failover support. Read more...


API driven SIP User-Agent end-point with OpenSIPS 3.4
22nd of March 2023 OpenSIPS as a mixed back-to-back, with a SIP User-Agent on one side and a custom logic on the other side, API controlling what how the SIP side should behave. Read more...


How to Generate Your Own STIR/SHAKEN Certs
31st of October 2022 Become your own STIR/SHAKEN CA and generate as many free SP certificates as you want! Read more...


The MSRP gateway
9th of June 2022 OpenSIPS 3.3 can bridge the two Instant Messaging worlds: the simple SIP MESSAGE world (page mode) and the complex MSRP world (session mode) ! Read more...


OpenSIPS Contact Center, or blending chats and calls
8th of June 2022 Understand in details the new chat/MSRP support in the Call Center module, OpenSIPS 3.3 , how it works and how to use it.! Read more...


Using the Diameter Client Capability of OpenSIPS 3.3
2nd of June 2022 The ability to build & send arbitrary Diameter requests from script is finally here! Read more...


Releases...

Minor releases: OpenSIPS 3.3.5, 3.2.12 and 3.1.15
19th of April 2023 New stable releases for each major branch, packing important fixes Read more...


Minor releases: OpenSIPS 3.3.4, 3.2.11 and 3.1.14
22nd of February 2023 Three new minor versions of our stable releases are out! Read more...


Minor releases: OpenSIPS 3.3.3, 3.2.10 and 3.1.13
20th of December 2022 A stable non-LTS 3.3 minor release, along with two new minor versions of our stable LTS 3.2 and 3.1 are out! Read more...


Minor releases: OpenSIPS 3.3.2, 3.2.9, 3.1.12
19th of October 2022 Three new minor versions of our stable LTS releases are out! Read more...


Minor releases: OpenSIPS 3.3.1, 3.2.8, 3.1.11
17th of August 2022 A new set of minor releases is now available for all supported OpenSIPS branches! Read more...


Stable releases: OpenSIPS 3.3.0
19th of August 2021 The first stable release of the new OpenSIPS 3.3 is available to use! Read more...


Releases: OpenSIPS 3.3.0-rc1, 3.2.7 and 3.1.10
22nd of June 2022 A first release candidate for 3.3 is now available, along with two new stable minors! Read more...



Page last modified on May 31, 2023, at 06:02 PM