How I Built a Realtime Asterisk PBX with MySQL and WebRTC

In today's world of remote work and distributed teams, real-time communication systems must be more scalable and flexible than ever. I recently built a high-performance Asterisk PBX system using MySQL realtime architecture, WebRTC, and secure WSS signaling—all fully integrated with a modern UI built in Laravel. In this post, I'll take you behind the scenes of how I designed, deployed, and optimized a cloud-based communication solution from scratch.

🔧 Tech Stack Used

Asterisk 20.x
MySQL Realtime (ps_endpoints, ps_auth, ps_aors)
WebRTC with DTLS + ICE + SRTP
WSS (secure WebSockets) on port 8089
Laravel for control panel and provisioning
SSL via Let's Encrypt for domain provisioning

🧩 What Realtime Means in Asterisk

Instead of static SIP config files, PBX configuration stays in MySQL.

This gives:

✔ Changes without reload
✔ Scalable multi-server deployments
✔ Modern API-driven provisioning

🛠 Key Features I Implemented

| Feature | Benefit | |---------|---------| | Live user registration using WebRTC | Softphones work directly from browser | | Carrier & DID routing via database | Easier bulk provisioning | | Automated billing sync | Real-world SaaS readiness | | Secure transport setup | Better NAT handling & security |

🌐 Deployment Architecture

Multi-tenant structure on cloud VPS (Contabo) with:

Firewall + Fail2ban hardening
DNS-based multi-domain support for WebRTC

📈 Performance Gains

Faster provisioning (seconds vs minutes)
Zero downtime reconfigurations
Encrypted media even on public networks

Conclusion

Building a realtime PBX taught me how crucial it is for modern VoIP systems to be API-driven, browser-friendly, and automated. Future updates will include IVR builders and live queue dashboards powered by AMI & WebSockets.

How I Built a Realtime Asterisk PBX with MySQL and WebRTC