FreeSWITCH 2025 Year in Review
Dec 23, 2025
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FreeSWITCH is the open-source engine developers rely on when they need deep control over real-time communications. It provides direct access to the media and signaling layers, a modular architecture, and flexible APIs for extending your system or integrating with the rest of your environment.
Teams turn to FreeSWITCH to power their voice, video, and messaging platforms, but when the operational weight of scaling becomes too much, extend your workload to SignalWire without changing your application logic.
FreeSWITCH is the leading open-source communication framework that powers some of the world's largest telephony infrastructures. It is maintained and sponsored by SignalWire, a company founded by the core developers of FreeSWITCH as an alternative solution for deploying software-defined telecom in the cloud.
With over 5k+ businesses and 300M+ daily users globally, FreeSWITCH powers some of today's top businesses.
FreeSWITCH Developer Documentation | Upgrade FreeSWITCH with SignalWire
SignalWire was built by the FreeSWITCH team to solve the hard parts of running it at scale. FreeSWITCH gives you control, but scaling clusters, managing carriers, and adding AI features introduces operational overhead. If you want the power of FreeSWITCH without the infrastructure responsibility, SignalWire is ready to pick up where you leave off.
CAUCA outgrew a FreeSWITCH-based system and needed separate capacity for emergency operations and mass notifications. Using SignalWire Voice, they quickly stood up 9-1-1/3-1-1 calling and a citywide alert system delivering thousands of prerecorded messages per day.
Directly manage SIP, RTP, codecs, media flows, dialplans, and routing logic.
When you need to route media across regions, orchestrate call events, or plug in automation like transcription or AI, SignalWire connects to those same primitives. Expand your system without rewriting dialplans or re-architecting how you handle media or signaling.
Load only what you need with FreeSWITCH’s module system, and build custom components when you’re doing something outside the usual call flow or media behavior.
Expand further with SignalWire’s cloud platform, which handles scaling, patching, monitoring, and module upkeep for you, so your team can stay focused on the work that adds real value—and keep innovating, not maintaining.
Run multi-party audio and video conferences with FreeSWITCH when you need hands-on media control.
Avoid building and maintaining global clusters, session coordination, overflow handling, or NLU/AI pipelines just to keep conferences stable under variable load. SignalWire scales media regions, manages failover, coordinates conference state, and distributes events.
Licensed FreeSWITCH modules add advanced media handling and call-flow intelligence to your deployment. Whether you’re optimizing bandwidth or improving call detection logic, these add-ons give you production-ready capabilities you don’t have to build yourself.
Developers working with real-time voice systems know that efficient media handling makes all the difference. G.729A is a high-efficiency, fixed-bit-rate speech coder (8 kbit/s, 10ms frames) built on the ACELP algorithm. It’s optimized for minimal CPU use while still delivering strong perceived voice quality.
When you’re building autodialers, voice-automation, or large-volume call flows, distinguishing human answers from machines is mission-critical. The Answering-Machine Detection (AMD) module for FreeSWITCH lets your system analyze live call audio and make a prediction: human pickup vs. answering machine/voicemail.
FreeSWITCH Advantage provides a supported, commercially licensed FreeSWITCH distribution designed for long-running production systems. With quarterly releases, security updates, and direct access to FreeSWITCH support, it removes the operational risk of running critical communications infrastructure alone.
FreeSWITCH has always been driven by developers who build, experiment, fix, and share. If you’re looking to learn, contribute, or stay connected with the people who use FreeSWITCH every day, there are several ways to get involved.
SignalWire is committed to hosting and maintaining the FreeSWITCH code and community. Join the community now to talk with fellow developers and our team of experts.
The ClueCon developers conference brings together leaders in the open-source community from all over the world to discuss VoIP, AI, telecommunications, WebRTC and IoT. ClueCon offers various educational sessions, hackathons, and networking opportunities with developers in the open source community. Come join us!
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