Build an IMS using OpenSIPS 3.5 – S-CSCF (Part 1)

The main focus of the OpenSIPS 3.5 development plan is to facilitate and provide the tools required to build robust, production-ready, industry-grade IMS solutions. To this goal we have been working on new features and functionalities in OpenSIPS 3.5 that aim to simplify the IMS development process while still provide the required specifications. This post … Continue reading Build an IMS using OpenSIPS 3.5 – S-CSCF (Part 1)

Using the Diameter Client Capability of OpenSIPS 3.3

In the previous iteration, OpenSIPS 3.2 introduced a first version of the support for Diameter protocol peering by leveraging the freeDiameter project and its excellent C libraries. Building on top of this, OpenSIPS 3.3 now offers a way of building and sending arbitrary Diameter protocol requests, from the opensips.cfg script. This brief post will teach … Continue reading Using the Diameter Client Capability of OpenSIPS 3.3

Getting Started With Diameter In OpenSIPS 3.2

This blog post will briefly talk about how RADIUS and Diameter work, how we managed to incorporate Diameter into OpenSIPS 3.2 and what we have built on top of it so far. Short Protocol Intro The RADIUS spec first appeared in 1997 and was revised in 2000. Its purpose is to offer Authentication (Are the … Continue reading Getting Started With Diameter In OpenSIPS 3.2