[Help Needed] Building IVR System with Twilio + FreePBX + Node.js Backend

Asterisk Asterisk Integration
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Hi everyone,

I’m currently working on building a complete IVR (Interactive Voice Response) system with the following goals:

  • Receive incoming calls on a Twilio number
  • Route calls dynamically based on IVR flow stored in PostgreSQL
  • Allow agents to make outbound calls
  • Manage IVR flow and logic using Node.js (with ARI)

Here’s what I’ve done so far:

:white_check_mark: Purchased a Twilio phone number
:white_check_mark: Set up Asterisk + FreePBX server
:white_check_mark: Built a Node.js backend that uses Asterisk ARI to handle call logic
:white_check_mark: Created API endpoints to store and retrieve IVR flows (using PostgreSQL)

:red_question_mark: What I Need Help With:

  1. How do I connect the Twilio number with Asterisk/FreePBX for inbound calls?
  • Should I use SIP trunking?
  • Do I need to register a SIP domain with Twilio and route it to Asterisk?
  • How can I ensure incoming calls reach the Stasis() application?
  1. Once the call reaches Asterisk, how do I trigger my Node.js logic using ARI?
  • I’ve registered my ARI app (ivrapp) and listening on StasisStart, but it’s not receiving events yet.
  • What dialplan or context config is required to ensure the call enters Stasis(ivrapp)?
  1. How to allow outbound calls for agents via Asterisk (using Twilio or any other SIP trunk)?
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For anyone reading this, it is also on the FreePBX forum: