I'll set up and configure VAPI AI with SIP trunking and Twilio integration so your voice agents can make and receive real phone calls with zero latency, full automation and reliable telephony infrastructure.
I Will Set Up VAPI AI SIP Trunking With Twilio for Voice Agent Call Flow Automation
SIP trunk setup and basic call flow configuration with conversation scripting for one line.
- Chatbot Flow Design
- Conversation Script
Full SIP trunk and Twilio setup with action plan, call flow design and conversation scripting.
- Chatbot Flow Design
- Conversation Script
- Action Plan
Complete multi-automation SIP trunk system with full CRM, calendar integrations and API setup.
- Chatbot Flow Design
- Conversation Script
- Action Plan
- API Integration
- Bug Fixes
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Full Description
Building a Voice AI agent is the hard part. Connecting it to a live phone network shouldn't be what holds you back.
If you're struggling with SIP trunking configuration, webhook errors, or Twilio integration issues, I specialise in solving exactly that. I handle the technical backbone of Voice AI — bridging your VAPI dashboard with major telephony providers so your agent can make and receive calls reliably, with zero latency and full production stability.
SIP trunking is the bridge between your AI voice agent and the real telephone network. Without it configured correctly, your agent sits in a dashboard doing nothing. I make sure it's wired up properly, tested thoroughly and ready to handle live calls from day one.
My services cover the full telephony setup. I'll link your VAPI AI platform to Twilio, configure SIP trunk credentials, set up inbound and outbound call routing, and handle all the webhook and API configuration needed to get calls flowing. Whether you need a single inbound line for a receptionist bot or a multi-line outbound dialler for sales campaigns, I build the infrastructure to support it.
Beyond the basic connection, I configure call flow logic so your voice agent handles calls intelligently. That means proper routing, fallback handling, call transfer rules and integration with your existing systems. If you need calls logged to a CRM, appointments booked to a calendar, or follow-up actions triggered automatically after a call ends, I build those automation workflows using n8n, Make and GoHighLevel.
I don't just get the trunk connected and walk away. Every setup includes testing across multiple call scenarios to make sure your agent performs correctly under real conditions. I provide documentation on the configuration so you understand what's been built and how it works. Post-delivery support is included to handle any issues that come up once you're live.
If you've been stuck on the telephony side of your Voice AI project, let me handle the infrastructure so you can focus on what your agent actually says. Send me a message and let's get your voice agent on the phone.
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Compare Packages
| Feature | Basic | Standard | Premium |
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 12 days |
| Revisions | 1 | 2 | 3 |
| Chatbot Flow Design | ✓ | ✓ | ✓ |
| Conversation Script | ✓ | ✓ | ✓ |
| Action Plan | ✕ | ✓ | ✓ |
| API Integration | ✕ | ✕ | ✓ |
| Bug Fixes | ✕ | ✕ | ✓ |
Portfolio
Examples of the seller's work related to this Zinn.
Twilio Sip Trunking
A project involving SIP Truing with Twillo
Extra Information
Why Choose Me
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Frequently Asked Questions
Yes. I configure outbound SIP trunk setups specifically for cold calling campaigns, including dialler logic, call scheduling and lead list integration.
Yes. While Twilio is the most common, I can configure SIP trunks with other telephony providers depending on your requirements. Let me know what you're using and I'll advise.
Absolutely. I set up call transfer rules so your AI agent can hand off to a live person when needed, with full context passed through.
You'll need a Twilio account with a phone number. If you don't have one yet, I'll guide you through the setup during the requirements stage.
Yes. I integrate call events with GoHighLevel, Google Sheets and other CRMs so every call is logged with details, outcomes and follow-up actions.
That's exactly what I fix. If you have an existing setup that's broken or partially configured, I'll diagnose the issue and get it working properly.
Customer Reviews
See what our customers say about this Zinn
Royal is a great guy who knows exactly what I needed. He built the AI voice bot I asked for using VAPI AI and got the API working perfectly on the first try. Fast and super easy to work with and I'll definitely be in touch.
Royalseed did an awesome job on this project. I just needed a quick proof-of-concept chatbot for lead capture and tracking, and he nailed it. The conversation flow actually feels natural, not stiff or robotic like a lot of bots. He got the webhook working smoothly so leads drop right into our Google Sheets, and set up the API placeholders exactly how I asked. Really solid communication and fast turnaround. Definitely plan to hire him again when we're ready to build out the full system.
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