2025 Schedule

Lunch N' Learn: FreeSWITCH

A comprehensive introduction to FreeSWITCH. This session covers everything from installation to configuration, providing you with the foundational knowledge you need to effectively use this powerful telephony platform.

12:00 pm

12:30 pm

AI Workshop: Controlling Hardware with Voice AI and Arduino

Learn how AI agents can bridge software and hardware. In this hands-on session, you’ll use SignalWire’s Agent SDK to collect user input over the phone, process it with AI, and trigger physical events on an Arduino like toggling LEDs, motors, or sensors.

12:40 pm

1:00 pm

Prompt Panic: Live AI Agent Showdown

In this Coder Games event, attendees suggest wild, useful, or downright absurd ideas for AI bots and voice-powered functions. Brian has to build them live and on the spot using the SignalWire Agents SDK. Will it work? Will it crash? You’ll just have to be there.

9:30 am

10:15 am

Coder Games

Coder Games Demo

Check out what your fellow devs showcase for their created Maker Challenge, FreeCYCLED Hacks, and SignalWire Challenge demos.

3:15 pm

5:00 pm

Nightly Activities

Join us for the annual welcome dinner at Giordano's, home of Chicago's original deep dish pizza. Dinner starts at 6:00pm CT.

Registration Opens at 8:30 am

Pick up your conference badge, swag items, and other conference resources during check-in.

Keynote Presentation

As the visionary behind FreeSWITCH and the CEO of SignalWire, Anthony Minessale brings a unique blend of technical mastery and big-picture thinking to the ClueCon stage. His keynote sets the tone for the conference each year—diving deep into the current state of open-source communications, emerging technologies like AI and programmable voice, and where the future is headed. Anthony doesn’t just talk about innovation—he builds it.

9:15 am

10:00 am

Scalable And Flexible SIP Routing With Kamailio And Lua

Kamailio is an open source SIP routing server known for its robustness, solid security and high performance. This talk shows how Kamailio can leverage Lua scripting language to extend its capabilities as well as bring its flexibility to the next level. From reloading Lua routing rules without restart, to importing Lua native libraries, Kamailio becomes the SIP routing engine that can facilitate building from classic telephony systems to modern real time communication platforms.

10:00 am

10:30 am

Howdy, cousin! Updates from the Asterisk Project

Last year, we celebrated the 25th anniversary of Asterisk, and would you look at that - FreeSWITCH is turning 20! CONGRATULATIONS! What’s new? What’s changed? From chan_sip to chan_pjsip, AGI to ARI, and C to C++, let’s take a look.

10:30 am

11:00 am

Power Up You Presentations: AI edition!

People have become used to ‘so so’ presentations in the tech space. Introducing 7 Power Presenting Protocols’ that act as framework to create a great demo or presentation from scratch, or to enhance one you already have. Whether you are looking for your next role, selling a product to clients or ideas to your colleagues, looking to raise funding or develop involvement in your Open Source project, a killer demo or presentation will really help you win. This ‘how to’ session shows you the way…

11:15 am

11:45 am

A Recipe for Real Time Voice AI: WebRTC, SLMs and Open Source Software

Explore how Small Language Models (SLMs) and open-source tools enable affordable, fast AI-driven WebRTC interactions. You'll learn how SLMs reduce cost and improve response times for voice AI, some standard AI architectures that connect models to external data, benchmarking voice AI pipelines to compare real-time performance and a live demo of an AI-powered WebRTC assistant.

11:45 am

12:15 pm

Lunch N' Learn: SignalWire

Learn how easy it is to combine a local FreeSWITCH server with the power of SignalWire cloud services to add sophisticated features to your services.

1:00 pm

1:30 pm

Building Global Voice Platforms with Local Intelligence

As voice platforms expand across borders, designing with local intelligence becomes essential. This talk explores how global voice systems can incorporate geolocation, regional behavior patterns, and compliance awareness to deliver more adaptive, resilient, and user-aware communication experiences. Learn how to architect voice platforms that scale globally while responding intelligently to local context.

1:45 pm

2:15 pm

Build a cloud communication platform with FreeSWITCH, NATS and connect to Signalwire

Build a cloud communication platform with existing technologies like FreeSWITCH, Kamailio, NATS and connects to the SignalWire cloud platform.

2:15 pm

2:45 pm

5 Lessons From Deploying Voice AI in Production BPO Environments

Five lessons learned deploying production voice AI for BPOs, including what happens when function calls fail, callers leave early, or flows become unexpectedly complex. Dive into strategies for regression testing, prompt engineering, and structuring multi-step flows that perform reliably in the real world and design smooth handoffs to human agents when voice AI reaches its limit.

2:45 pm

3:15 pm

Security & Compliance

Enabling Responsible Personal Data Privacy with vCons

Learn how the vCon consent attachment spec helps embed and manage consent within conversational data—enabling compliance, transparency, and AI-ready voice applications in a privacy-focused world.

3:30pm

4:00pm

Small Model Efficiency, Large Model Performance: Arcee Foundation Models

Take a first look at how Arcee is democratizing access to powerful AI by drastically reducing the resource barrier. Join us to see how AFM-4.5B is set to redefine expectations, offering large-model performance without the large-model price tag or computational overhead.

4:00 pm

4:30 pm

Making Voice AI Accessible: Beyond the Enterprise

Everyone deserves access to tools that make communication easier and more efficient. That's the future we're building, one phone call at a time.

4:30 pm

5:00 pm

Nightly Activities

Take a break from the technical intensity and dive into ClueCon's most beloved social tradition, the Gigabit Reception! This beloved networking event starts at 8:00pm CT in the SignalWire Lounge.

Registration Opens at 8:30 am

Pick up your conference badge, swag items, and other conference resources during check-in.

What's New in OpenSIPS 3.6

Another year, another OpenSIPS major release! This LTS edition (3y support) features various QoL additions for both OpenSIPS config developers and OpenSIPS sysadmins.

9:15 am

9:45 am

Can We Put the Telecom Back in Erlang/Elixir's OTP?

Erlang's Open Telecom Platform (OTP) was built for telecom, yet modern SIP stacks in the BEAM ecosystem remain scarce. In this talk, Brandon shares his journey attempting to build a SIP stack in Elixir, how the Membrane framework opens the door to build a media softswitch, and why Elixir's meta-programming could help build a dialplan like VoIP Framework for Elixir.

9:45 am

10:15 am

Scaling and Moving User Registrations/ Locations/ Presence from FreeSWITCH to Kamailio

Kamailio can help you scale and secure your voice platform. There's an even greater benefit when migrating users from FreeSWITCH to registering directly on Kamailio. This presentation discusses the pros and cons and provides tips on a successful migration.

10:15 am

10:45 am

Making AI Voice Agents Sound Like Humans

Discover how Rime's integration with SignalWire's programmable unified communications platform empowers developers to create AI voice agents that not only sound human but also respond in real-time. Learn about Arcana's groundbreaking features, including the ability to generate infinite voices on the fly and incorporate paralinguistic expressions like laughter and sighs, enhancing the authenticity of AI interactions.

11:00 am

11:30 am

Latency and the Illusion of Listening

Explore how latency doesn’t just affect performance, it affects perception. After conducting an experiment with five versions of the same voice bot, each with different response latencies, to see how users felt about the interaction. See how milliseconds influence trust, comfort, and believability in voice AI and leave with a new understanding of how timing is more than a metric, it’s part of your bot’s personality.

11:30 am

12:00 pm

Lunch N' Learn: User Authentication And Caller Identity Management

Integration with external systems or REST API servers is a common nowadays and the SIP-based services go far beyond telephony. This Lunch N' Learn focuses on the options Kamailio offers for user authentication and caller identity management, from the classic Digest authentication with various hashing algorithms such as MD5, SHA256 or SHA512, to JWT or other key-based generated tokens, as well as extensible STIR/SHAKEN implementation.

12:45 pm

1:30 pm

Community Revival of Open Source Telecom

Learn how Kazoo Classic emerged as a community driven project, powered by donated infrastructure, volunteer developers, and a clear roadmap. From addressing critical security fixes to implementing protocols like STIR/SHAKEN, catching up with modern standards, and exploring the future of AI in telecommunications. Take away valuable insights to revitalize abandoned open source projects while fostering a strong, sustainable community.

1:30 pm

2:00 pm

WebRTC Call Setup, ICE Negotiation, and Call Quality Analysis

WebRTC enables real-time communication across the web, but establishing and maintaining a high-quality connection is far from trivial. This session dives into the intricacies of ICE (Interactive Connectivity Establishment) negotiation, the process that determines how peers connect in dynamic network conditions, and explores how to assess call quality using RTCStats.

2:45 pm

3:15 pm

XML For the Win: Reliable AI Data Extraction

Discover a simple approach to reliably extract structured data from a wide range of generative text models (one approach to rule them all), as well as extra tips to build battle-tested pipelines that integrate AI.

3:15 pm

3:45 pm

AI Roundtable: Applying AI to Real World Products

Details coming soon.

3:45 pm

5:00 pm

Nightly Activities

Join us for an epic night of games from classic video games to carnival games. You won't want to miss this fun filled chance to hang out with your peers to show off your skills in a round of mini golf then unwind with a drink. The games begin at 7:30pm CT in the SignalWire Lounge.

Registration Opens at 9:00 am

Pick up your conference badge, swag items, and other conference resources during check-in.

Building a Telco Carrier From Scratch With FreeSWITCH

Henning will demonstrate how they built up the company from scratch just using FreeSWITCH as the main workhorse. He will show you how they managed to scale up to millions of minutes a month. with a very technical talk with lots of configuration snippets and showing how to integrate voice bots.

9:15 am

9:45 am

Antipatterns in distributed VoIP softswitch design

Alex shares hard-earned lessons from the field, walking through top examples of software engineering and architectural pitfalls to avoid when building SIP trunking or multi-tenant PBX softswitch platforms.

9:45am

10:15am

Designing Conversations: The Art and Science of Building Voicebots

In this session, Ruchir shares a journey of building a Minimum Viable Product (MVP) for a voicebot solution. From selecting the right tech stack and handling speech-to-text challenges to designing conversational flows and ensuring platform integration, this talk covers the practical decisions, hurdles, and key learnings from our MVP development.

10:30 am

11:00 am

Security & Compliance

Media Security Is Hard: The Many Ways RTP & SRTP Still Fail Us

A fast-paced tour of stubborn weaknesses (plus a few new twists) and field-tested techniques you’ll need to detect and stop media vulnerabilities (such as RTP Bleed, RTP Inject, and RTP Flood attacks) in 2025 deployments.

11:00 am

11:30 am

Homer 11: Your Services can't hide their secrets anymore

Homer 11 is now more than just a SIP capture tool, it’s a Full Stack OSS Telecom Observability solution. From the host, down to the code, and deep inside the packets, Homer 11 allows you complete visibility into your telecom stack through a broad variety of compatible logs, metric and tracing agents. In this talk, see what’s new, how it works, how to set it up, and most importantly, why Homer 11 can replace complexity with clarity.

11:30 am

12:00 pm

Lunch N' Learn: Exploring Homer 11 + Modern Observability

Meet Homer 11, the latest evolution of the popular open-source SIP capture and VoIP monitoring tool. In this Lunch N' Learn session, you'll get an exclusive look at Homer’s newest features and see how it integrates with modern observability tools.

12:45 pm

1:30 pm

Git as Game Logic: What Video Games Can Teach Us About Version Control

In this talk, we’ll reframe Git’s concepts through game design, from commit as your checkpoint save to stash as a quick inventory swap. Then we’ll level up: what does rebase have in common with timeline rewrites? Why is reflog your hidden save system? And why is force-pushing to main basically using cheat codes in co-op?

1:30 pm

2:00 pm