You will get Enterprise Asterisk PBX Setup with Secure SIP Trunks & AI Voice Integration
Rising Talent
Project details
Tired of expensive phone systems, dropped calls, missed leads, or high call center costs? In 2026, top businesses are moving to powerful VoIP + AI voice solutions that run 24/7, handle calls, book appointments, qualify leads, and integrate with CRMs, all without adding staff.
I build enterprise-grade Asterisk, FreePBX, SIP trunk, Twilio, Vapi, and Retell AI systems, tthe most in-demand stack for modern telephony. You get secure PBX setup, cloud deployment, IVR automation, speech-to-text, intelligent voice agents, call routing, failover, and CRM/GoHighLevel/HubSpot integrations, all hardened with TLS/SRTP, Fail2Ban, and performance tuning.
Clients choose me for clean, production-ready systems that combine deep VoIP knowledge (Asterisk, FreePBX, Twilio API, SIP) with advanced conversational AI (Vapi AI, Retell AI, voice bots) to automate support, lead generation, and outbound/inbound calling. You’ll receive full documentation, thorough testing, and handover support, delivering real cost savings, better call quality, and fast ROI.
Send your server access, SIP/Twilio details, and requirements to get started. Let’s build your high-performance VoIP + AI phone system today!
I build enterprise-grade Asterisk, FreePBX, SIP trunk, Twilio, Vapi, and Retell AI systems, tthe most in-demand stack for modern telephony. You get secure PBX setup, cloud deployment, IVR automation, speech-to-text, intelligent voice agents, call routing, failover, and CRM/GoHighLevel/HubSpot integrations, all hardened with TLS/SRTP, Fail2Ban, and performance tuning.
Clients choose me for clean, production-ready systems that combine deep VoIP knowledge (Asterisk, FreePBX, Twilio API, SIP) with advanced conversational AI (Vapi AI, Retell AI, voice bots) to automate support, lead generation, and outbound/inbound calling. You’ll receive full documentation, thorough testing, and handover support, delivering real cost savings, better call quality, and fast ROI.
Send your server access, SIP/Twilio details, and requirements to get started. Let’s build your high-performance VoIP + AI phone system today!
Support & IT Services
Cloud Services, CRM Customization & Development, Data Recovery, Helpdesk & Technical Support, ConsultationDevice
Server/HostingOperating System
Linux/UnixCloud Platforms
Alibaba Cloud, Amazon Web Services, IaaS, Dell Technologies Cloud, Google Cloud Platform, IBM Cloud, Microsoft Azure, Oracle, SaaS, Salesforce, SAPWhat's included
| Service Tiers |
Starter
$150
|
Standard
$400
|
Advanced
$800
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 17 days |
Number of Revisions | 2 | 3 | 5 |
Remote Connection Support | |||
Documentation |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$50 - $100
Additional Revision
+$20Frequently asked questions
6 reviews
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GE
Greatest E.
Jun 23, 2026
Telephony & AI Voice Automation Engineer
Great work, improved our call handling, reduced missed calls, and the AI automation made our communication much more efficient.
PM
Petagaye M.
May 10, 2026
You will get Certified HubSpot & Mailchimp Specialist – Campaigns That Drive Growth
PM
Petagaye M.
Mar 8, 2026
You will get Certified HubSpot & Mailchimp Specialist – Campaigns That Drive Growth
What stood out most was his clear communication and ability to simplify complex processes. He was able to extract from the information and script I provided to great exceptional videos .John doesn’t just complete tasks, he builds structured, scalable systems that deliver real results.
If you’re looking for someone reliable and strategic in automation, CRM platforms, or AI-driven solutions, I highly recommend John.
If you’re looking for someone reliable and strategic in automation, CRM platforms, or AI-driven solutions, I highly recommend John.
OO
Oluwole O.
Feb 15, 2026
AI Voice & LiveKit Telephony Engineer | SIP–WebRTC Call Systems
Exceptional execution from start to finish. The SIP/PSTN integration with LiveKit and real-time WebRTC audio streaming over WebSockets was delivered with low latency, high reliability, and production-grade stability.
John showed strong expertise in telephony architecture, call routing, and AI voice infrastructure. Clear communication, clean deployment, and outstanding results. Highly recommended.
John showed strong expertise in telephony architecture, call routing, and AI voice infrastructure. Clear communication, clean deployment, and outstanding results. Highly recommended.
PM
Petagaye M.
Feb 11, 2026
You will get Certified HubSpot & Mailchimp Specialist – Campaigns That Drive Growth
Very smooth transition backed with his immaculate expertise, he goes above and beyond with his service.
About John
VoIP Engineer | Asterisk, FreePBX, SIP Trunking, AI Voice & Cloud PBX
100%
Job Success
Akure, Nigeria - 8:41 pm local time
I’m a VoIP Engineer & Cloud PBX Specialist who designs, secures, and automates enterprise-grade phone systems using Asterisk, FreePBX, SIP, WebRTC, and AI voice integrations, deployed on AWS, DigitalOcean, Hetzner, and Google Cloud.
I don’t just install PBX systems.
👉 I architect scalable call infrastructures
👉 Harden servers against SIP fraud
👉 Build automated billing & recharge systems
👉 Integrate AI voice bots and real-time audio pipelines
👉 Migrate on-prem VoIP systems to the cloud with zero downtime
🚀 What I Can Do For You
📞 Cloud VoIP Deployment & Migration
Full installation of Asterisk, FreePBX, Issabel
AWS EC2/VPC & Google Cloud deployments
On-prem → cloud migration
Multi-tenant PBX systems for resellers & call centers
🔐 VoIP Security & Anti-Fraud Hardening
Fail2Ban & IPTables
SIP scanner protection (SIPVicious, brute force)
AWS Security Groups & firewall rules
Call rate limiting & fraud detection
🔁 Advanced Call Routing & IVR
Multi-level IVRs
Time conditions (day/night routing)
Call queues, recording, and monitoring
Twilio, Telnyx, Bandwidth SIP trunk integration
Least-cost routing
💳 Automated Billing & Recharge Systems
Balance monitoring scripts
Auto-top-up triggers
Payment gateway integration
Auto-generated PDF invoices
Email delivery to finance teams
🤖 AI Voice & Real-Time Audio
LiveKit + Asterisk integration
WebRTC calling
Speech-to-text pipelines
AI voice assistants
Call transcription & analytics
⭐ Why Clients Hire Me
✅ 24/7 Monitoring & Emergency Support
✅ Enterprise-Grade Architecture
✅ Zero-Downtime Migrations
✅ Automation-Focused Engineer
✅ Custom Scripting (Python/Bash/Node)
✅ Clear Communication & Fast Response
I operate like a systems engineer, not just technical support.
🧰 Tech Stack
VoIP: Asterisk, FreePBX, SIP, PJSIP, WebRTC
AI Voice: LiveKit, Whisper, GPT APIs
Cloud: AWS, DigitalOcean, Hetzner, Vultr
DevOps: Docker, Kubernetes, Terraform, CI/CD
Automation: Python, Bash, Node
Security: Fail2Ban, IPTables, Firewalling
Whether you need a quick SIP fix, a cloud PBX rebuild, or a fully automated call center with AI voice and billing, I’m ready to help immediately.
KEYWORD PROFICIENCY:
Asterisk, FreePBX, FreeSWITCH, Kamailio, OpenSIPS, VICIDIAL, 3CX, PBX, VoIP, VoIP PBX, VoIP Administration, VoIP Software, SIP, Session Initiation Protocol, IVR Software, Telephone Systems, Call Center Management, Call Center Software, Phone Support, Phone Communication, Telecommunications Engineering, Microsoft Teams, RingCentral, Avaya, Skype for Business, Network Engineering, Network Design, Network Planning, Network Monitoring, Network Security, Cloud Computing, Cloud Engineering, AWS CloudFormation, AWS Systems Manager, Microsoft Azure Administration, VMware Administration, Linux System Administration, Windows Server, Web Server, IT Support, System Administration, System Configuration, Virtualization, Cluster Computing, Ceph, Docker, Kubernetes, CI/CD, Terraform, DevOps, Computer Networking, MySQL Programming, JavaScript, TypeScript, PHP, Node.js, Vue.js, React, Web Development, Full-Stack Development, AI Agent Development, AI App Development, Artificial Intelligence, Machine Learning, Deep Learning, LangChain, AI Consulting, AI Model Training, Conversational AI, Natural Language Processing, Predictive Analytics, Automation, Business Process Automation, CRM Automation, Marketing Automation, Automated Workflow, Task Automation, Twilio, Twilio API, Twilio Voice, Twilio IVR, Twilio SIP, Twilio Webhooks, Twilio Studio, Twilio Flex, Twilio Programmable Voice, Twilio Call Routing, Twilio Contact Center, Twilio AI Integration, Twilio Telephony, Twilio SMS Automation, Twilio Outbound Calling, Twilio Inbound Calling, Twilio Voice Bot, Vapi, Vapi AI, Vapi Voice Agent, Vapi Voice Bot, Vapi API Integration, Vapi Telephony, Vapi Conversational AI, Vapi Outbound Calls, Vapi Inbound Calls, Vapi Automation, Vapi Workflow Integration, Retell, Retell AI, Retell Voice Agent, Retell Voice Bot, Retell API Integration, Retell Call Automation, Retell Telephony, Retell Conversational AI, Retell IVR, Retell Automation, Retell Workflow, Retell Outbound Calls, Retell Inbound Calls, Call Routing, Appointment Scheduling, Lead Generation, CRM Systems, HubSpot, GoHighLevel, Clear Communicator, Accountable for Outcomes
Steps for completing your project
After purchasing the project, send requirements so John can start the project.
Delivery time starts when John receives requirements from you.
John works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements Gathering & Planning
Client purchases tier and provides: server access (SSH/root, IP), SIP trunk details (user/pass/host/channels/CID), features/scale (extensions, DIDs, IVR, AI needs), files/screenshots. I review, clarify, and plan with timeline.
Server Setup & PBX Installation
Establish secure remote access, prepare/update Linux server (packages, firewall, timezone), install latest stable Asterisk + FreePBX, configure modules/admin/SIP/PJSIP/drivers/codecs, and verify core stability.