The schedule is under work, until it is ready, you can see below a selection of accepted sessions!
Event structure:
- Monday, May 12, 2025: 08:30 – Registration
- Monday, May 12, 2025: 09:00 – 18:00 – Presentations
- Monday, May 12, 2025: 19:00 – 21:00 – Social Networking Event
- Tuesday, May 13, 2025: 08:30 – Registration
- Tuesday, May 13, 2025: 09:00 – 17:00 – Presentations
Info: Open6GNet Event
On May 14, 2025, the day after Kamailio World 2025, the Next Generation Networks (AV) department of the Technische Universität (TU) Berlin organises the Towards 6G: Open Source Mobile Networks Technologies – Demos and Showcases event. If you want to participate to it, you can select the option in the registration form for Kamailio World and you do not have to register again on the Open6GNet event website. More details about the Open6GNet event at:
| ♦ Navigating The Decline Of Minute Revenue |
| David Duffett, Simwood, UK |
| Voice call per minute revenue seems to be heading in one direction, and it’s not up!
What is a carrier to do? Becoming more than a carrier is very legitimate answer, but this could be a costly transition if one’s infrastructure is based on bespoke services with unhealthy licence fees and maintenance costs. Whether you’re a carrier, or a developer serving carriers or large-scale enterprises, combatting the decline of voice traffic revenue presents an opportunity best served with open source solutions. In this session we’ll take an overview of the situation, suggest a way forward and give examples of where Simwood has forged a path to the future. |
| ♦ Deep Dive Into Twilio Global Voice Network |
| Lucas Christian, Twilio, USA |
| Explore the technical foundations of Twilio’s voice systems, emphasizing our strategies for maintaining a reliable, global-scale network with low latency in the cloud. This session provides a comprehensive analysis of how Twilio handles massive volumes of voice communications, combats security attacks, fraud and optimizes call routing. We will delve into our network topology and system specifics, with a focus on how we leverage Kamailio to ensure peak performance, security, and reliability. |
| ♦ Kamailio + CAMARA: The Open Telco API Stack |
| Santiago Troncoso Álvarez, Quobis, Spain |
| Telecom operators are evolving to expose their network capabilities through developer-friendly APIs. The CAMARA initiative is at the forefront of this transformation, defining a unified framework that enables access to core telecom functions without requiring deep telco expertise.
In this session, we will dive into CAMARA’s Telco APIs, with a special focus on the WebRTC working group, led by Quobis. This group defines key APIs—webrtc-register, webrtc-call-handling, and webrtc-events—that enable device authentication on IMS networks, call management, and real-time event monitoring. We will explore how these APIs empower developers to integrate telecom services seamlessly into their applications. Beyond the API definitions, we will discuss real-world implementations and the strategic role of Kamailio as a key enabler in this ecosystem. Through practical examples, we will showcase how Kamailio + CAMARA can be leveraged to build scalable and robust WebRTC solutions. Join us to discover how open-source and standardization efforts are reshaping telco innovation, and why Quobis is leading the way in bridging the gap between WebRTC and next-generation telecom networks. |
| ♦ Automating Kamailio Updates: Overcoming Challenges In A Dynamic Environment |
| Jonas Böttner, Sipgate, Germany |
| sipgate operates a bunch of Kamailio installations, and keeping them up to date has always been a major challenge. While updating Kamailio itself isn’t inherently difficult, it took us 18 months to update just 50% of our installations — one by one. At this pace, updating all our Kamailio instances would take approximately three years, by which time the first ones would already be outdated again. Beside Kamailio, there are more components to run a service in a professional environment with lots of different endpoints and interconnected systems. We operate our Kamailio instances in a constantly evolving ecosystem that includes: new OS versions, changes in our configuration management, and occasional replacements of entire CI/CD, metrics, logging, or alerting stacks. All of these factors add to the challenge of maintaining and updating our installations. This presentation will cover the technical parts of updating kamailio. Additionally, I will share insights into sipgate’s previous update process and how we worked towards our goal: Automatically update all Kamailio installations at once. |
| ♦ 20 Years Of VoIP In Mission And Safety-Critical Communication |
| Wolfgang Kampichler, Frequentis, Austria |
| 20 years ago, a team of air traffic control communication experts set themselves the task of investigating the feasibility of using VoIP for ATM voice communication. They defined criteria, requirements and guidelines for ground-to-ground communication and the ground segment of air-to-ground ATM communication. The result was the publication of standards in 2009. This first version laid the foundation for cross-border and cross vendor interoperability for VoIP in air traffic management. Around the same time, the first protocols for NG112/9-1-1 were published and work on 3GPP Release 13 began in 2012. Release 13 included significant advances, such as the first set of specifications for mission critical services like Mission Critical Push to Talk (MCPTT). This presentation offers a journey through the evolution of VoIP-based mission and safety-critical communications and provides some interesting first-hand insights and anecdotes. |
| ♦ Kamailio As A Web3 Telecom Server |
| Amir Dorot, Cellact, The Netherlands |
| This presentation shows how Kamailio was used Kamailio as a server in a Web3 Telecom solution.
Some highlights include: – using crypto wallet for registration instead of username and password – how one Kamailio can serves different service providers – decentralised solution based on Kamailio – allowing combination of different user identities such as ENS, e-mail or phone number using the same server – examples from the Kamailio flow that are integrated with Polygon blockchain – for call establishment. |
| ♦ Kamailio Configuration Security: From Real-World Vulnerabilities To Proactive Defense |
| Sandro Gauci, Enable Security, Germany |
| While Kamailio’s remarkable flexibility is one of its key strengths, it can become a double-edged sword when it comes to security. This presentation takes you beyond theoretical concepts, straight into real-world security issues discovered during actual penetration tests and security assessments.
You’ll be taken through a journey of vulnerable configuration patterns, focusing on Kamailio configuration pitfalls that could compromise your systems. Through practical examples based on actual real configurations seen out there, we’ll demonstrate how these vulnerabilities can be exploited and, more importantly, how to effectively mitigate them. But we don’t stop at quick fixes. This presentation then moves on to discussing strategic thinking, offering innovative approaches to break free from the endless cat-and-mouse game of security fixes. Join us to learn about proactive security strategies that will help you leverage Kamailio’s flexibility while maintaining robust security posture. Whether you’re a seasoned Kamailio administrator or just getting started, this session provides actionable insights and practical solutions to stay ahead of potential threats in your Kamailio infrastructure. |
| ♦ AI Pros And Cons |
| Randy Resnick, France |
| A panel discussion of opposition and defense of this now ubiquitous technology. Like cryptocurrency, AI requires enormous planetary resources. Is this justified? What are the actual advantages of AI, especially in our world of realtime communications, but also in general. Randy will also discuss his observations as an artist with over 50 years of professional experience, which has become familiar with the growing objections to some uses of AI including for book and album covers. |
| ♦ Kamailio As An Adaptive SIP Routing Layer For Hyperscale Deployments With Asterisk An Kubernetes |
| Florian Lechner, World Direct eBusiness Solutions, Austria |
| Experiences of building and operating a unified communications (UC) platform that serves 1.200 customers in Austria and manages 75.000 endpoints. Designed as a cloud-first, highly scalable solution, the platform leverages open-source components with Kamailio, Asterisk, and Kubernetes as its core building blocks.
This session will explore the pivotal role Kamailio plays in our solution: |
| ♦ RTP Over QUIC: An Interesting Opportunity Or Wasted Time? |
| Lorenzo Miniero, Meetecho, Italy |
| After spending the past 10 years (and more!) working with WebRTC, and even more than that with SIP/RTP, I decided to have a look at the efforts happening within the standardization community on how to leverage QUIC for real-time media. This led me to studying not only QUIC itself, but also RTP Over QUIC (RoQ) and Media Over QUIC (MoQT), both implemented in a new open source library called imquic.
This presentation will focus more specifically on RTP Over QUIC, on its current state as a specification and its untapped potential. It will discuss whether it has any place in the current VoIP ecosystem, if there’s room for QUIC in SIP too, and what may happen in the future. |
| ♦ A Journey Of Public Emergency Calls Used In An MCPTT Network |
| Roman Onic, Kontron, Austria |
| Kontron developed and introduced an MCx based train radio system in order to replace existing old analog radio and GSM-R systems. The solution is based on Kamailio as core IMS system along with integrated 3GPP Application Servers (ISC towards Kamailio S-CSCF) and other applications.
As part of the solution, it was required to provide a functionality for the customers to allow the usage of public emergency calls too, i.e. Type 1 Emergency Call 112 as well as national Type 2 Emergency Calls (e.g. 122, 133 or 144 in Austria). The presentation includes a short recap of the overall solution and then focus on the steps how public emergency calls have been integrated for various use cases in their deployment and highlight how Kamailio has been used for this purpose. |
| ♦ Bandwidth Management For Realtime Data On The WebRTC Datachannel |
| Tim Panton, Pipe, UK |
| Networks do not always give you all the bandwidth you want. This is especially true when cell hopping a 5G network at 250kph. WebRTC has reasonably robust and well understood mechanisms for managing the bandwidth needs of live video. The WebRTC data channel is less well served (Transport wide Congestion Control, despite it’s inclusive name, ignores the data channel). How does one fit 10Mbit/s of LIDAR data (for example) down a 4Mbit/s pipe whilst staying realtime and low latency?This talk will review the possible methods and how the API points offered by the WebRTC data channel and the underlying SCTP protocol might (or might not) help.There will be some low level packet nerdy talk and probably a demo. |
| ♦ Kroko ASR Models – Beating Whisper One Metric At A Time |
| Joachim Vanheuverzwijn, Zoiper, Bulgaria |
| The talk introduces Kroko ASR— speech recognition optimized for realtime communications—as we tackle the big question: can we beat Whisper on speed, latency, and word error rate without gaming the system? We’ll dive into Whisper’s limitations, highlight common pitfalls in ASR benchmarking, and examine the key performance metrics that matter. |
| ♦ Simplified And Modernized Build System For Kamailio |
| Xenofon Karamanos, Gilawa, Cyprus |
| The existing Kamailio build system is based on more then 20 years old and complex Makefiles. For the Kamailio 6.0 release the whole build system for the core, all modules and utilities were overhauled. We choose as replacement a modern approach based on the de-facto standard build system “cmake”. The talk describes the motivation for this change and the approach that was used. Furthermore it explains common usage scenarios for building Kamailio, provides insight into how to extend it and how to use it for your own development purposes. It will conclude with some demonstration how cmake can be integrated with modern development environments for easier and optimized development. |
| ♦ Kamailio And SIP Transport Layers |
| Daniel-Constantin Mierla, Co-Founder Kamailio, Asipto, Germany |
| Kamailio is well known for its flexible and high capacity SIP traffic routing, no matter it is over UDP, TCP, TLS or WebSocket. The presentation dives into the specifics of each transport layer, revealing how they can be tuned for better performance, what impacts them and the network topologies that can help scalability. It also shows the latest developments done for the transport layers, like multi-threaded UDP receiver and the sockets config definition. |
| ♦ The Evolution Of Carrier Grade Routing Modules |
| Lucian Balaceanu, 1&1, Germany |
| The session presents the evolution of several modules during the recent years, development done based on the needs of 1&1 team to operate a telecommunication platform with millions of connected endpoints and the increasing demand for flexibility to interact with external systems. Among these components are the KEMI framework, the carrierroute, p_usrloc or pdb modules, as well as rtpengine. |
| ♦ Kamailio Code Challenge – Crack The Logic! |
| Markus Monka, Kamailio, Sipgate, Germany |
| You know Kamailio – but can you recognize its logic at a glance?
The Kamailio Code Challenge features real-world code snippets submitted by the community. Each snippet includes the Kamailio version and, optionally, the company and product context where it’s used. How it works: * A mysterious Kamailio script appears on the big screen. Ready for the challenge? Put your Kamailio knowledge to the test and claim the prize! Config snippet submission via the web form available at: |
Presentation proposals can be submitted via:
