You will get AI Voice Assistant for Asterisk (ARI + OpenAI)
Project details
I will set up a proof-of-concept AI phone agent on your Asterisk PBX using ARI and OpenAI’s real-time API. This PoC includes one basic conversation prompt, English-only support, audio format handling (G.711 ↔ PCM), and basic transcription. You’ll get 7 days of post-delivery support (max 3h) for bug fixes and config tweaks. Client must provide DID/SIP access and OpenAI API key (billed directly to you by OpenAI). This is perfect for testing AI voice in your call flows before investing in a full deployment.
AI Algorithms
Transformer ModelAI Applications
AI Chatbot, AIOps, Conversational AI, Speech SynthesisAI Development Language
PythonAI Tools
Azure OpenAI, Hugging Face, PyTorchAI Models
WhisperWhat's included $49
These options are included with the project scope.
$49
- Delivery Time 1 day
- Number of Revisions 2
- AI Model Integration
- Database Integration
- Prompt Engineering
Optional add-ons
You can add these on the next page.
Additional Revision
+$100
Bring Your Own Model/Platform (BYOM)
+$200
AI Voice Agent at Scale
+$2,999Frequently asked questions
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AD
Aaron D.
Apr 21, 2026
Migrate server from CentOS 7 to AlmaLinux 8
NH
Nadir H.
Mar 13, 2026
OpenSIPs support and optimizations
Asif is hard to communicate with and failed to meet our expectations. We will be looking for someone else.
AA
Abdullah A.
Dec 16, 2025
Voip , PBX Business development Expret
Very good , hopefully will hire again .
VK
Valentin K.
Jun 22, 2023
Preparing for job interview
Asif is a great talent. He helped me a lot. Not just that he would answer my questions, but he would teach me so I understand it.
FL
Fred L.
Jun 2, 2023
Assisting with Python Etc
About Md Asif
WhatsApp Business Calling | Voice AI | VoIP Expert
56%
Job Success
Dhaka, Bangladesh - 2:56 am local time
With 12+ years in carrier-grade VoIP and SIP engineering, I design and ship systems that handle live contact center traffic: outbound campaigns, inbound routing, AI-to-human escalation, and everything in between. I have deployed AI voice agents into production contact centers and built the underlying telephony infrastructure they run on both sides of the stack, one person.
What I deliver:
WhatsApp Business API voice calling: SIP-TLS integration, voice agent deployment, AI + human agent blending with real-time handoff
AI voice agent pipelines: Vapi, LiveKit, Retell AI, ASR (Deepgram), TTS (ElevenLabs, OpenAI), LLM intent routing, AMD detection, barge-in handling
SIP/VoIP infrastructure: Asterisk, OpenSIPS, Kamailio, FreeSWITCH, RTPEngine , media handling, NAT traversal, SRTP, codec negotiation
Outbound campaign platforms: ACMA/DNC compliance, predictive dialing logic, call recording, transfer flows
CRM and workflow integration: webhooks, REST APIs, n8n, Make, booking and ticketing flows
Production troubleshooting: one-way audio, latency, STT/TTS race conditions, SIP signaling failures, call quality under load
Tech stack:
WhatsApp Business API, Vapi, LiveKit, Retell AI, OpenSIPS, Kamailio, Asterisk, FreeSWITCH, RTPEngine, Deepgram, ElevenLabs, OpenAI, Twilio, Python, Elixir/Phoenix, Node.js, WebRTC, Docker, Linux, AWS.
If you need one engineer who can own both the AI agent logic and the telecom infrastructure it runs on, including WhatsApp voice and AI-to-human handoff, I can handle architecture, implementation, migration, and urgent production fixes.
Steps for completing your project
After purchasing the project, send requirements so Md Asif can start the project.
Delivery time starts when Md Asif receives requirements from you.
Md Asif works on your project following the steps below.
Revisions may occur after the delivery date.
Free 15-min Audit
Review your Asterisk/ARI setup and confirm connectivity.
Integration Setup
Connect Node.js app to ARI, configure audio routing, and link OpenAI voice.