Faisal H.

Hi, I’m Faisal—a senior VoIP, CPaaS, and communications systems architect with 25+ years of experience designing carrier-grade, high-availability, real-time communication platforms. I build, scale, secure, and modernize voice and video systems for telecom operators, SaaS platforms, AI startups, CPaaS providers, and enterprises around the world. If it involves SIP, RTP, WebRTC, LLMs, Linux, CPaaS, or real-time media at scale, I can build it, optimize it, or rescue it. 🔑 What I Specialize In ✅ VOIP Platform Architecture (FreeSWITCH / Asterisk / Kamailio) ✅ Linux System Engineering, Security, and Optimization ✅ SIP, RTP, WebRTC, STUN/TURN, NAT Traversal ✅ Real-Time Communication (Voice & Video) at Scale ✅ AI-Powered Voice Bots, Transcription, and TTS Integration ✅ Troubleshooting SIP Call Flows, Packet Capture & Analysis (Wireshark/sngrep) 🔑 What I Do: VOIP & Real-Time Communication Architecture; FreeSWITCH / Asterisk / Kamailio / OpenSIPS platform design Carrier-grade SIP routing, NAT traversal, media handling High-availability + auto-scaling VoIP infrastructures Multi-tenant PBX, call center, and UCaaS platform development CPaaS Development & Integrations; Twilio, Plivo, Telnyx, Vonage, MessageBird Build SMS/voice/WhatsApp automation & workflows Replace/optimize expensive CPaaS architecture with self-hosted systems AI Voicebots, LLM Automation & Speech Tech (AI Integrations); Real-time voicebots using Whisper, Riva, Deepgram, Azure, ElevenLabs SIP → AI → SIP conversational call flows Real-time transcription + diarization + TTS pipelines LLM-powered call automation (ChatGPT Voice, RAG, custom models) WebRTC Application Engineering; Build custom WebRTC softphones (browser, React, Flutter) WebRTC signaling integration (SIP, custom protocols) TURN/STUN/ICE infrastructure setup QoS optimization for video/voice over WebRTC SIP Security, Hardening & Compliance; Anti-fraud protection, SIP scanning mitigation Fail2Ban, firewall tuning, SRTP/DTLS encryption STIR/SHAKEN setup & routing compliance Carrier-grade security audits & penetration checks DevOps for Real-Time Media Platforms; Docker/Kubernetes containerized VoIP workloads Auto-scaling SIP clusters, distributed media servers Monitoring with Netdata, Homer, Prometheus, Grafana CI/CD automation for telecom systems Outbound Dialers & Contact Center Systems; Predictive/preview dialers (custom-built or integrated) CRM telephony integration (HubSpot, Salesforce, Zoho) IVR, call routing, analytics dashboards Telephony Cost Optimization & Migration; Reduce Twilio/Telnyx billing by 40–70% Move from hosted CPaaS → self-hosted SIP infrastructure SIP trunk cost optimization strategies Emergency VoIP Platform Rescue; SIP call failure resolution One-way/no-audio fixes NAT, RTP, firewall, WebRTC troubleshooting 24–48h critical system recovery 🛠️ Tools & Stack VOIP Engines: FreeSWITCH, Asterisk, Kamailio, OpenSIPS Linux Distros: Ubuntu, Debian, CentOS, Alpine Protocols: SIP, RTP, SDP, SRTP, ICE, DTLS, WebRTC Monitoring: sngrep, Homer SIP Capture, Fail2Ban, Netdata DevOps: Docker, Ansible, Kubernetes (Cloud-Native VOIP) 🧠 Why Clients Work With Me 25+ years in telecom & VOIP architecture Built and scaled platforms like VdoTok using FreeSWITCH + WebRTC Performance-tuned Linux servers to handle millions of calls securely Helped startups and enterprises launch, scale, and secure VOIP stacks Expert in carrier interoperability, DID routing, and multi-tenant PBX 🧾 Sample Engagements 🔹 Migrated a legacy PBX to FreeSWITCH with SIP trunking and HA setup 🔹 Built a custom WebRTC softphone connected to Asterisk 🔹 Hardened VOIP infrastructure for international carrier with Linux + firewall tuning 🔹 Developed voice bot with NVIDIA RIVA and integrated it with SIP via FreeSWITCH 📞 Work With Me Whether you need to: Build a complete real-time communication platform Integrate AI voice bots into SIP/WebRTC Optimize or scale a VOIP system Reduce telephony costs Rescue a failing carrier-grade deployment 📞 Let’s Connect Whether you need to optimize your VOIP system, migrate to FreeSWITCH, or troubleshoot deep Linux-based issues, I can step in quickly and deliver solutions that scale and perform. 📅 I’m available for short consultations, full system builds, and long-term projects. Let me know when you're available for a quick Zoom or chat—I'm open Monday through Friday.