AiPBX

AiPBX is a modern, enterprise-grade open-source IP PBX and Unified Communications (UC) platform engineered on top of Asterisk 22 LTS. Designed to overcome the security, networking, and deployment complexities of legacy PBX solutions, AiPBX brings enterprise telephony, real-time presence, video/audio WebRTC communications, and native mobile clients together into a streamlined, high-performance stack.

Key Highlights & Architecture

• Single-Port L4 ALPN Multiplexing: AiPBX eliminates the need to expose complex RTP ranges and multiple SIP ports to the public WAN. Using Nginx Layer 4 (L4) Stream ALPN multiplexing, the entire telephony and web footprint (HTTPS Admin Web UI, Asterisk WebRTC WSS, and Coturn TURNS) operates seamlessly behind a single secure port (Port 443).
• Microsoft Teams Direct Routing SBC: Native integration capabilities acting as a Session Border Controller (SBC) with full SIP TLS and bi-directional SRTP encryption. Route internal team calls over local IP trunks without incurring PSTN carrier toll costs.
• Dual-Endpoint Asterisk 22 Engine: Optimized PJSIP architecture offering synchronized endpoints across physical desk phones (Snom, Yealink, Grandstream, Polycom, etc.) and software-based WebRTC endpoints.
• High-Speed Presence & Messaging: Powered by an independent Go microservice for real-time WebSocket messaging and presence management, keeping Asterisk AMI/ARI free from chat and signaling overhead.
• Native Mobile Softphones (Android & iOS): Dedicated lightweight companion apps built natively in Kotlin and Swift. Incorporates FCM/APNs push notifications and CallKit integration for instant wake-up, eliminating background battery drain.
• Turnkey WebRTC Softphone: In-browser zero-install calling with DTLS-SRTP encryption, call transfer, hold, and multi-party conferencing.
• Call Center & Queue Controls: Integrated agent state management with dialplan-level break and resume tracking, detailed queue metrics, and call monitoring tools.
• Digital Fax & Integration Ready: Web-based digital fax server, REST API endpoints, and real-time webhooks for CRM/ERP automation.

Why Choose AiPBX Over Traditional PBXs?

Traditional IP PBX distributions are often burdened by legacy dependencies, fragmented web interfaces, and complex NAT/firewall traversal configurations. AiPBX solves this with modern infrastructure design: zero WAN exposure for vulnerable SIP signaling ports, lightning-fast native mobile apps, modern web UI, and enterprise SBC capabilities out-of-the box.

Licensing & Deployment

• 100% Free & Open Source: Released under the permissive MIT License.
• No Limits: Unlimited extensions, unlimited concurrent trunks, and zero per-user subscription fees.
• Deployment: Fully self-hosted on modern Linux environments (Debian / Ubuntu Server).