ClueCon 2024 Speakers

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Keynote Presenter 

Anthony has more than 25 years of experience in software engineering, beginning with the web hosting boom in the mid-90’s, which eventually led to a career dedicated to advancing software-defined telecom. He was the original founder and author of an open-source software defined telecommunications platform called “FreeSWITCH”, created in 2005. Today, the FreeSWITCH platform is used as a critical component by enterprises worldwide, including; Zoom Phone, Five9, Amazon Connect, Vonage and Dialpad.

Kamailio and FreeSWITCH at Scale

Tips, tricks, and lessons learned from running FreeSWITCH and Kamailio at Scale.

Fred Posner provides VoIP Consultancy Services specializing in Kamailio (formerly OpenSER), FreeSWITCH, and other open source RTC software. Fred also founded and runs; helping protect SIP servers globally from unwanted traffic. Contact Fred at

Generative Conversational AI Interoperability

Explore the transformative power of OVON Linux Foundation AI&Data Specs in enabling Conversational AI Interoperability, which ensures smooth, platform-independent voice assistant communication that is both open and ethical.

Dive into the critical role OVON Specs play within the Open Voice Network’s Interoperability Initiative, emphasizing the importance of OVON Specs in developing a universal, open-source AI voice interface that allows for effortless integration across different platforms. Focus will be on the practical uses and collaborative opportunities of OVON Specs, demonstrating their flexibility and significance in the rapidly changing world of conversational AI, and their influence in shaping the future of voice technology.

Diego Gosmar is the Chief AI Officer at XCALLY, specialized in Artificial Intelligence with particular focus on Generative Conversational AI, Natural Language Processing (NLP), Sentiment Analysis, Conversation Analysis, AI Agent interoperability, Sustainable and Ethical Conversational AI. He is a member of the Open Voice Interoperability and Trustmark group from the Linux Foundation AI & Data, a no-profit San Francisco and International organization, dedicated to the definition of standards and guidelines for Conversational AI ethical and responsible use.

Do Androids Dream of Making VoIP Calls

In a quantum AI world, how will we (or our AIs) communicate? Which Science fiction communication devices are becoming a reality.

James Tagg is a serial entrepreneur, physicist, and award-winning author. He was one of the original inventors of the touchscreen now found on all mobile phones. He founded Truphone, the world’s first global mobile network, making the first VoIP call on a mobile phone and developing the eSIM. During COVID-19, he built a quantum computer in his garage, which explores ‘the measurement problem’ allowing faster quantum computers to be built. He is currently the Chief Architect for World Mobile a Web3 mobile carrier launching in the USA. His first book, Are the Androids Dreaming Yet? Explores the limits of Artificial Intelligence and the differences between humans and computers.

Kamailio as a SIP Application Server

Kamailio is well known for its scalability and flexibility for SIP routing, but is that all? What else it can do? This presentation shows some of the SIP application server features that can be run with Kamailio, such as instant messaging conferencing, MSRP, XCAP and presence services, gatewaying to social media, basic media server, DIAMETER router or SMS center.

Daniel co-founded Kamailio in June 2005, aiming to build a solid SIP server project where openness to community and contributions has an important role, previously being core developer of SIP Express Router (SER) from its early beginning in 2002. He has a Master’s degree in Computer Science and Engineering from the Polytechnics University of Bucharest and worked as a researcher in network communications at Fraunhofer Fokus Institute, Berlin, Germany. His activity is done at Asipto, a company targeting to offer and build reliable services and solutions that benefit at maximum from Kamailio’s flexibility and features.

Dynamic SIP Credentials

Learn how to use Kamailio to generate dynamic SIP credentials that expire after a certain amount of time. Engineers sometimes forget to remove SIP credentials of test carriers from a customers system after performing testing, and wouldn’t catch it until a fraud notification from the carrier or receive the monthly bill. Therefore, we created a RESTFUL endpoint called “/lease” and it creates a set of SIP credentials that are only active for a defined timeframe. Once, the timeframe is reached the credentials are automatically removed from Kamailio.  Using SIP dynamic credentials versus using long-lived credentials is more secure when building new environments and performing automated testing using CI/CD. Credentials are automatically removed once testing is complete.

Mack has worked for large Silicon Valley based compaines for most of his 20-yr career and has built companies in the  technology sector, such as;

* Founder and Managing Partner, Flyball – Holding company that has two main subsidiaries, dOpenSource and DetroitPBX. dOpenSource provides commercial support for Open Source telephony projects and it sponsors an Open Source project called dSIPRouter

* Co-Founder and Managing Director, Detroit Black Tech – 501(c)3 non-profit focused on promoting Black Tech Talent in Detroit and globally through their annual software developer conference called “Hacking With The Homies Developer Conference“

* Entrepreneur in Residence, TechTown – Mack has the privilege of mentoring up and coming early stage tech companies. He bootstrapped all of his companies, so he leans in on that experience to provide guidance to these companies. He works with them to develop their idea and a Minimal Viable Product (MVP) with the desire to find a product-market fit.

Build 5G Stand Alone Private Network with Open Source

Mobile network technologies, for a long time, were known to be anything but affordable, especially for small companies and individuals. However, over the past few years, supported by software defined networks, the costs for radio access hardware went down. Allocation of testing spectrum licenses has been made more flexible and open source started also to play a relevant role, considerably lowering the entry barrier for research and development in the mobile networks space. This session presents how one can build an affordable 5G SA private network using open source only software, which then can be used for testing, prototyping and beyond.

Elena-Ramona Modroiu is a researcher at AV Chair of Technischen Universität (Technical University) Berlin, Germany, leading the research group for open source mobile technologies, focusing on leveraging open source to facilitate student’s access to complex RTC systems and to define next generation communication services. She has a master degree in Computer Science Engineering from Polytechnics University of Bucharest, Romania. She has been directly involved in a couple open source projects for more then two decades, among them: Kamailio SIP Server and Siremis.

From Texting to TikTok: Defining Digital Regulation

We’ve all heard the recent TikTok drama, the push to ban its use in the US. We’re not going to comment either way, but it does bring up the very controversial topic of digital regulation. TikTok is being questioned due to software and database ownership, should it raise concerns about national security?

Business texting is experiencing the drama of regulations, as well. The US mobile carriers decided to set up their own regulation authority, and it worked, they got a good portion of business to sign up with their registry or else they wouldn’t deliver 10DLC, or A2P business text messages. We all handed over our data, and content of our messages that would be sent from each specific phone number. It passed through a company-run registry that the US carriers deemed their official reputation authority, and if approved, it is then vetted again by the carriers, all before messages can be sent. Is this ok?

Tom Sheahan is CEO/Co-founder of Red Oxygen. As one of the visionaries of the A2P messaging space, Tom and Red Oxygen delivered the world’s first SMS through Outlook ’97 using Nokia 5110s before the CPaaS space existed. Tom has over 30 years of experience in the U.S. and Australian IT/Telecommunications industry.

G2NG (Geek to Non-Geek) Communications Masterclass

When Geeks speak to each other, most of the time it just works… However, when addressing less technical audiences, oftentimes Nerds aren’t Heard. Attend this session to find out how to be an Engineer that engaged (and even energizes) those you wish to communicate with, both in meetings and when giving demos or presentations.

David is a Geek that has been publicly Speaking and teaching for more than 20 years, from London to Los Angeles, Berlin to Beirut, Kingston to Kuala Lumpur, Mumbai to Melbourne, and many more! He loves communications technology, has served as the Worldwide Community Director for the Asterisk project and has hosted a number of ClueCons! David has always been grateful to the Geeks that build the various technologies he speaks about, and now he wants to give back– by helping Geeks to Speak to ‘normal’ people with power and clarity.

Connect to Everything with FreeSWITCH

Seven shares his experience of how to contribute code, write modules, and how he extended FreeSWITCH to connect to other systems and platforms including but not limited to MCU, SFU Microsoft Teams and ChatGPT.

Seven is the CTO and founder of Yantai Xiaoyingtao, as well as the founder of,  and the founder of the FreeSWITCH Chinese Community. As a longtime FreeSWITCH code contributor, he took his many years of experience to write three books, available in Chinese – “FreeSWITCH the Definitive Guide”, “Kamailio in Action”, and “FFmpeg in depth”.

Building 4G and 5G IMS Flows Using OpenSIPS 3.5

This year’s OpenSIPS 3.5 release continues the work on the open-source IMS support, with added features such as AKAv1 authentication, IPSec tunnel management, Diameter server support and HTTP/2 server support to name a few. The overarching theme here is to provide an open-source set of tools to implement a basic MVNO: from readily-available Docker containers to configuration options and comprehensive documentation, join Liviu’s talk to get more comfortable with concepts such as IMS, 4G, VoLTE and 5G and how you can begin implementing them.

Liviu is a Full time VoIP systems engineer and software developer, Open-source enthusiast, and passionate about CS problem-solving, clean software design and production-ready codebases. He has been involved with OpenSIPS and the VoIP world for over 12 years. Armed with plenty of knowledge on running and troubleshooting OpenSIPS in production, SIP protocol quirks, software development, packaging and deployment automation, as well as architecting SIP platforms, databases and web APIs from A-Z, his constant focus is on producing optimal answers to random questions, as quickly as possible.

Flutter & WebRTC

Dive into the world of Flutter, a powerful UI toolkit for building natively compiled applications for mobile, web, and desktop from a single codebase. Our journey will begin with an introduction to Flutter, highlighting its key features and advantages. Then explore WebRTC (Web Real-Time Communication) support within the Flutter framework. Providing an overview of how Flutter facilitates real-time communication capabilities, crucial for developing applications that require audio, video, and data sharing functionalities. Along with the challenges developers face when integrating WebRTC with Flutter, and despite these challenges, integrating WebRTC with Flutter offers significant benefits.

To bring theory into practice, the presentation will include a live demo showcasing the integration of Flutter and WebRTC with SignalWire, a robust platform for building communication applications, providing a practical example of how to implement and leverage these technologies effectively.

João is a Software Engineer with more than 20 years of diverse experience across multiple domains, including teaching Computer Science, Automation and Control Systems, Software Development Tools, Educational Technology, Blockchain, and, more recently, WebRTC.

High Availability & Scalability of RTC Services with Freeswitch, OpenSIPS & friends

Achieving Industrial-Grade Reliability and Scalability in Telco with Open Source Software (SIP, IMS, WebRTC).

Giovanni is a consultant for the Telco industry, designing solutions and training courses for FreeSWITCH, SIP, WebRTC, OpenSIPS and Kamailio. An Internet tech pioneer, in 1996 Giovanni was co-founder of Italia Online, the most popular Italian portal and consumer ISP, and architect of its Internet technologies. He is highly engaged with FreeSWITCH (wrote a couple endpoint, and co-authored with Anthony Minessale the 3 most current FreeSWITCH books), and after the New Economy galore he was two years in Serbia as Internet and Telecommunication Investment Expert for World Bank – IFC. Since 2005 he’s based in Italy, and serves ICT and Telco companies worldwide

Scaling & Managing RTC Workloads in Kubernetes

This session covers the following including demos:

  • Things to consider when deploying multi
  • Region SIP based services
  • HPA (Horizontal Pod Autoscaler)
  • Graceful shutdowns and post start practices
  • Deploying new updates without dropping calls
  • Single global ingress (security and simplicity) The foundation:

Joe Mordica is a the founder of 3 tech startups: VOXO, Kingdom Financial, and Crypto Cloud Mining. With all that experience, a love of designing backend systems that scale, and a passion for building admin dashboards and user experiences, he is the perfect addition to ClueCon.

Humans & Machines Working Together to Improve Contact Center Operations

The synergy between humans and machines is revolutionizing contact center operations, leading to enhanced customer service and operational efficiency. This collaboration leverages the strengths of both human agents and advanced technologies, particularly Artificial Intelligence (AI).

Adrian is a customer-focused Telecom Executive with over a decade of experience.  Throughout his career, he has developed a deep understanding of the telecommunications industry and have honed his skills in customer service, operations, and business strategy. Leading high-performing teams, driving revenue growth, and improving operational efficiencies has led him to contact center technology with Asterisk boxes and he loves working with chatbot/Voicebots to increase Contact center efficiency.

Use of Technology in European Parliament Election Campaign

This talk will examine the technologies and tactics Daniel chose for his campaign in the European Parliament elections, and his policies in relation to digital rights and the results.

The Return of Clippy

Discover how AI, often perceived as a recent innovation, has been a part of our technological landscape for decades. Learn how advancements in technology have transformed AI from simple virtual assistants like Clippy to sophisticated systems that seamlessly integrate into our daily lives. Understand the journey of AI and its growing impact on various industries.

Abbi is the Community Engagement Marketing Manager at SignalWire. She loves outside of the box marketing strategies and has led several special projects including branded card games, conference events, and creative videos.
You may also recognize her as one of our ClueCon Coder Games hosts. Using Humor as a tool, she injects personality into all of her work in order to better connect with the FreeSWITCH, SignalWire and ClueCon community members!

Hepic Cloud: The Challenges of Building an RTC Architecture in Cloud & How it’s Going

Nowadays micro-services are seen as the only way to do an architecture, and in particular, Kubernetes is used to do everything. However, most of the time the complexity that comes along with such an architecture is not taken into consideration, compared to the service/product we are trying to deliver, especially in the RTC world having a super-dynamic architecture is a challenge on its own. Hepic Cloud – some mistakes were made when designing its architecture, to the point where we are now in Hepic Cloud version 2. After all the struggles to get here, we want to share lessons learned and how Hepic Cloud drastically simplifies your observability stack and allows you to focus on what’s important while we maintain everything else. And yes, AI is part of the equation.

Rita is a DevOps Master at VoIP Solutions, where she applies her MSc in Electrical and Computer Engineering and my skills in Ansible, Terraform, Docker, and Kubernetes to automate, optimize, and monitor the deployment and operation of VoIP services. She is passionate about developing and delivering innovative and reliable solutions that meet the needs and expectations of clients.

Giving AI the Gift of Knowledge

LLM engines are very good at understanding and synthesizing data if it is presented correctly, but ingesting and processing existing documents presents multiple challenges. We will walk through the iterations that brought the SignalWire Datasphere component to market, using open source tools that will benefit the entire audience.

Luca Pradovera is Lead Solutions Architect at SignalWire. After 15 years in consultancy, where he built applications for multiple Fortune 500 companies, he is still a technology enthusiast and a developer fascinated by the cutting edge of IT. You may also recognize Luca as the host of our developer focused podcast, ClueCon Weekly! Where you can continue learning each week through more members of our community, with a different featured guest every episode.

AI on Frontier – The World’s Fastest Supercomputer

In this talk Kristian will provide an introduction to Frontier – the #1 system on the TOP500 list of supercomputers. From system specifications, to implementation details, to tips on how to submit applications for your own projects this is a “who, what, when, why, how” for US Department of Energy Exascale compute systems.

Kristian is the Co-Founder and CTO of Atomic Canyon, a startup deploying AI in the nuclear energy sector. He has spent his entire career developing technology solutions for interesting problems, founding companies like Star2Star, Tovera, and now Atomic Canyon.

Modernizing a Legacy VoIP Stack

Your VoIP stack is the engine of your business. It connects the calls. It makes the money. But, what do you do when it’s stale, old, and no one knows how it works?

Brandon started out working in technical support, but saw that there was a big gap of VoIP knowledge and development skills. Especially when it came to Asterisk and Freeswitch. So, he buckled down, wrestled through documentation and mailing list threads, and got lots of support from folks like Dave Horton, Brian West and the leadership team at Now he’s come out the other side with invaluable knowledge and experience on what it takes to modernize a legacy VoIP stack.

Bobby’s Table, A Google Adventure

How we took a lowly restaurant reservation system to a whole new level via Google Business listings.

Brian is one of the founders of the FreeSWITCH open source project, and an advanced communications pioneer. He is a key player in helping SignalWire to build a cutting edge platform that will disrupt the telecommunications status quo. In his current role as director of support, Brian enjoys interacting with and helping customers to solve some of the unique challenges they encounter.

Blazing the Trail- The Future of Telecom Roundtable

Michael is a founding member of the FreeSWITCH Open Source project. Michael has been working with open source since the early 2000’s and has contributed heavily to the Asterisk Open Source PBX and helped maintain the project infrastructure. In 2005, he joined the FreeSWITCH project as a founding member and has been working on the project ever since. Michael manages the platform and infrastructure side of the FreeSWITCH project and works directly on the code doing new features and improvements.

Blazing the Trail- The Future of Telecom Roundtable

Christopher is the lead on the STACK engineering team, which is responsible for building the SignalWire platform for enterprises. As a longtime user of FreeSWITCH, he started contributing early on with FS 1.0 writing modules, then decided to take a leap and bring that  experience to SignalWire.

Harnessing the Power of AI Roundtable- Cutting Through the Noise

Jeff helped change the way the world communicates and shaped the worldwide market acceptance of VoIP. He is an internet pioneer that has founded/co-founded numerous startups, like; Free World Dialup, VON, Vivox, and Vonage.  In 1995 defined “VON” to stand for Voice/Video on the Net. Jeff’s public policy work in Washington contributed to the reason services like: FaceTime, Messenger and WhatsApp are free.

Blazing the Trail- The Future of Telecom Roundtable

Jakub is a VoIP Developer focused on video engineering with over 15 years of experience in building telecommunications systems. As a programming and debugging guru, he uses his years of experience to build and improve the SignalWire platform.

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