OpenSIPS 4.0 is not only about adding new features, but also about rethinking parts of the engine that have remained unchanged for a very long time. One of the most important examples is the TCP/TLS layer. The TCP framework, in the form we have known it so far, has stayed largely the same since it … Continue reading TCP/TLS rework in OpenSIPS 4.0
Tag: OpenSIPS Summit
The OpenSIPS Summits have a 10 + years of history behind them. Started as an Amsterdam based event, the pandemic made us go and visit different cities each year - the community is the one voting, putting on the Summit map new locations like Houston, Athens and Valencia. This year is Bucharest! And there are … Continue reading OpenSIPS Summit 2026 Bucharest
Modern SIP infrastructures increasingly rely on load balancers, reverse proxies and cloud edge services in order to provide scalability, security and geographic distribution. While these components are extremely useful, they often hide the original source address of the client from the backend SIP infrastructure. Starting with OpenSIPS 4.0, we are introducing support for the Proxy … Continue reading Proxy Protocol support in OpenSIPS 4.0
5G technology offers speeds up to 1000 times faster than 4G, as well as significantly lower latency and the ability to support large numbers of devices connecting to the network at the same time. With 5G deployments by telecom operators in both USA/Europe debuting as early as 2019[1] and continuing throughout the following years, it … Continue reading HTTP/2 Server Support for Next-Generation Services in OpenSIPS 3.5
IMS Network Architecture, source: researchgate.net Intro The OpenSIPS 3.5 release introduces support for OpenSIPS acting as a Diameter server, with the possibility of scripting generic Diameter Server interactions. This means that you will be able to add, tweak or remove the support for various Diameter requests by only re-deploying your opensips.cfg set of scripts (yes, … Continue reading Diameter Server Support for IMS Flows in OpenSIPS 3.5
The crown OpenSIPS event, the OpenSIPS Summit, started as being located in Amsterdam, until the pandemic moved us online. But once we were back with to the in-person events, we experimented a different approach, by picking different locations each year - like Athens 2022 and Houston 2023. This approach was a successful one, as both … Continue reading OpenSIPS Summit 2024, Call for Location
Quite a few years have passed since the last set of stress tests were performed on OpenSIPS, with the performance numbers achieved at that time becoming less and less relevant with each new major release. As the number of features has grown, so has the complexity of the codebase -- making the alpha version of … Continue reading Stress-Testing OpenSIPS 3.4 LTS
The Back-to-back user agent support in OpenSIPS has seen many enhancements and new capabilities in the last couple of release cycles, starting with OpenSIPS 3.1. From clustering/ replication in version 3.1, to dropping the XML control logic in favor of native OpenSIPS scripting in 3.2 and many others, most of these additions made the B2BUA … Continue reading B2BUA Bridging Improvements In OpenSIPS 3.4
If almost one year ago we were releasing the first results of the security audit performed by of Enable Security over the OpenSIPS 3.2 code, now is the right time for the full disclosure. What was missing? As per the initial post, we hold back all the information about how to reproduce the crashes. Why? … Continue reading OpenSIPS Security Audit, fully disclosed
During this year's annually OpenSIPS Feature Survey, the poll results for the new OpenSIPS 3.2 reflected an emergent need for people to be able to run MI alike commands directly from the script. Initially, we were a bit reluctant from developing this feature due to the fact that (historically speaking), OpenSIPS's Management Interface has been … Continue reading Running MI commands from script in OpenSIPS 3.2
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