REAL-TIME COMMUNICATIONS + AI

Stefan Broddesson
VoIP • IMS • AI Voice

20+ years building carrier-grade voice & data platforms. Now bridging production SIP/IMS networks with real-time AI voice, video and text agents.

START A PROJECT SEE FEATURED WORK
20+
YEARS IN PRODUCTION TELECOM
...
DEPLOYMENTS WORLDWIDE
∞
9’s UPTIME DELIVERED

About Stefan

My common theme has been voice and data communication systems. Early on as a developer, but also as project manager, product manager and consultant.

A creative mind makes me naturally “disruptive”. I enjoy moving the boundaries of what can be done or how things are done. I thrive in teams of professionals.

Based in Sweden
EU / GDPR compliant
Privacy-first
No social media presence
Fluent in Swedish, Danish & English

With deep expertise in SIP, Kamailio, Asterisk, real-time RTP/RTCP monitoring, distributed systems, security-hardened platforms and automation (Ansible/OpenTofu), I deliver production-grade VoIP and IMS solutions that scale globally.

Today I help companies bridge traditional telecom infrastructure with modern AI voice, video and text agents — enabling closed-user-group communications, enterprise voice AI, Endpoint and Node AI-integrations and more.

Download full CV (PDF)
WHAT I DELIVER

Services

VoIP / SIP Consulting & Platforms

Design, rebuild and secure high-availability SIP cores. Kamailio, Asterisk, load balancing, peering, SBCs, and carrier-grade operations.

  • Full platform migrations & rebuilds
  • Security hardening (firewalls, proxies)
  • Real-time monitoring & alerting

IMS • Mobile • Satellite Integration

Closed-user-group voice/text for VoIP/ IMS networks, public safety (police, ambulance, fire), corporate fleets and custom IMS deployments.

  • AI voice/text bridging
  • Emergency & mission-critical networks
  • OpenBTS & GSM integration experience

AI Voice / Video / Text Bridges

Connect Grok Voice Agent API, LiveKit, WebRTC and SIP/IMS to real-time AI services. Custom enterprise voice agents, video calls with AI, SMS-to-AI routing.

  • SIP-to-AI WebSocket handoff
  • RTP/RTCP quality for AI calls
  • Private, secure deployments
DELIVERED

Featured Projects

Publicly traded VoIP provider • 2006–2013

Global SIP Core Rebuild & Distributed RTCP Monitoring

Rebuilt entire SIP routing platform (Kamailio + Asterisk clusters). Designed world-map real-time call quality system using distributed RTCP decoders – jitter, packet loss & delay alarms.

Kamailio Asterisk RTP/RTCP ZeroMQ
National VoIP provider • 2015–2018

Dynamic SIP Platform Rebuild

Complete rebuild enabling dynamic business logic execution. Platform security, change management, and customer solutions across Asterisk, Kamailio, Lua, ZeroMQ & MySQL.

Lua HAProxy MySQL Security
R&D • 2014

OpenBTS GSM Network + Bitcoin Payment Integration

Deployed open-source GSM/GPRS network on 1800 MHz with Asterisk integration. Explored Lua/Redis/ZeroMQ payment solutions.

OpenBTS Asterisk
2024–2026 • RnD and Prototyping

Grok Voice API + SIP Bridge (Proof of Concept)

Built real-time bridge between Grok Voice Agent API (WebSocket) and legacy SIP/IMS platforms — enabling AI-powered voice agents over traditional telecom networks.

WebRTC SIP LiveKit-style

Tools of My Trade

Core: Kamailio, Asterisk, Lua, ZeroMQ, Redis
Networking: SIP, RTP/RTCP, WebRTC, STUN/TURN, DPDK
Infra: Ansible, OpenTofu, Incus/LXC, Linux (Qubes/Debian)
Security: Juniper, Cisco, pfSense, HAProxy
Monitoring: Wireshark, Nmap, distributed protocol decoders
AI Bridge: Grok Voice API, LiveKit, WebSocket handoff

Let's build the next generation of real-time AI communications

Whether it's a full IMS platform, Mobile voice integration, or an AI voice bridge for your enterprise — I'm ready to deliver.

Or email directly: stefan@broddesson.com
Phone: +46 735 93 34 38