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Ebenezer C
@ebenezer_codes
VoIP SIP Trunk and Telephony Specialist Fixing Broken Phone Systems Fast
Vereinigte Staaten
Englisch, Deutsch, Tagalog, Spanisch, Französisch
Über mich
VoIP and telephony troubleshooter fixing broken business phone systems fast. I set up and repair SIP trunk registration, one-way audio, IVR, and call routing on FreePBX, Asterisk, 3CX, and VICIdial.
I fix Twilio and GoHighLevel SMS failures and A2P 10DLC rejections, connect AI voice agents (Vapi, Retell, ElevenLabs) to phone numbers via SIP trunk, and harden PBX against toll fraud and SIP brute-force attacks.
I diagnose before I touch anything and document every change.
Message me with your setup, I'll confirm scope and give a fixed price.
Kompetenzen
Ebenezer C
offline •
Durchschnittliche Antwortzeit: 1 Stunde
Meine Dienstleistungen
VoIP und Telefonie
I will setup voip sip trunk twilio a2p ivr freepbx vicidial 3cx and ai voice agent
Automatisierungen und Agenten
I will build custom google sheets automation with apps script appsheet and webhook sync
Portfolio
Arbeitserfahrung
Independent VoIP & Telephony Consultant
Self employed / Freelance • Selbstständig
Mar 2024 - Present • 2 yrs 7 mos
Provide diagnostic and repair services for businesses running FreePBX, Asterisk, 3CX, and VICIdial. Specialize in connecting AI voice agents (Vapi, Retell, ElevenLabs) to phone numbers via SIP trunk, resolving Twilio/GoHighLevel SMS and A2P 10DLC issues, and securing systems against toll fraud. Diagnose before making changes and document every modification for client records.
Voice Systems Engineer
Contact Automation • Freiberufler
Apr 2023 - Feb 2024 • 10 mos
Focused on hardening client phone systems against toll fraud and SIP brute-force attacks, implementing IP whitelisting, fail2ban rules, and secure trunk authentication. Scaled VICIdial clusters for high-volume outbound campaigns and led migrations from legacy on-premise PBX to hybrid SIP trunk architectures.
Telephony Systems Administrator
Business Atelier • Vollzeit
Jan 2022 - Mar 2023 • 1 yr 2 mos
Managed multi-tenant 3CX and VICIdial deployments for outbound call center clients. Built and maintained call routing logic, IVR trees, and dialer campaigns. Troubleshot Twilio and GoHighLevel SMS delivery failures and supported clients through A2P 10DLC registration issues as carrier requirements tightened.
