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
Category: Technical
When comes to the media/RTP side, one of the most common problem to be faced is the so called "one way audio", or "one party does not hear the other one, but vice-versa does". So, lets explore a bit how to troubleshoot such problems. But first, we need to understand how the media/RTP flows are … Continue reading Troubleshooting one way audio calls
The logging is an essential component of the operational side of SIP systems. The troubleshooting, the monitoring, the alarms and more do rely on logs. So the logs are essentials - and to address this, you need to have readable / understandable logs (as format and content). Another challenge when comes to logs is their … Continue reading Smart Logging with OpenSIPS 3.4
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
Our previous post presented SIPssert - an OpenSIPS Testing framework that does conformance testing for VoIP platforms (and not only). In this post we will describe how the OpenSIPS project has already started to benefit from the SIPssert capabilities in order to detect and prevent bugs as well as to avoid regressions and ensure that … Continue reading SIPssert and the journey of testing OpenSIPS
A SIP system/platform consists of multiple components, that interact in various ways to provide complex features (such as call routing, call pickup, registration and authentication, call parking, conferencing, IVRs and others). Each of the component that takes part of the system consists of both a software and its configuration, therefore in order to verify the … Continue reading SIPssert – an OpenSIPS Testing Framework
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
While OpenSIPS is mainly a SIP proxy, SIP Back-2-Back capabilities have been supported for a while. But, what about the "end user agent" support in OpenSIPS? Meaning the ability to create and control a Server / Client SIP User Agent, doing all the SIP magic (transactional and dialog level) transparently for you. Considering the integration … Continue reading API driven SIP User-Agent end-point with OpenSIPS 3.4
After having received some positive feedback on our presentation on the topic at hand at ClueCon '22, let's go through a more detailed run-down of all steps required, from a cryptographic point of view, in order to first become a fictive STIR/SHAKEN CA (Certification Authority), then to begin issuing signed certificates for various (also fictive) … Continue reading How To Generate Self-Signed STIR/SHAKEN Certificates
The majority of SIP User Agents still only support the MESSAGE method for providing Instant Messaging. However, modern Unified Communications(UC) ecosystems and more advanced messaging services, such as RCS(Rich Communication Services), are built on top of Session Mode messaging, which uses the MSRP protocol. With the addition of the new msrp_gateway module, OpenSIPS 3.3 introduces … Continue reading MSRP Gateway
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