Serverless & Twilio - IVR

Twilio allows developers to easily integrate phone calls, SMS and more into using TwiML.

This project deploys a serverless function using Twilio serverless runtime as the provider. The function responds with TwiML instructions to forward the phone call to any overseas number.

Install

Install Twilio Node.js Provider Plugin & Service Dependencies

npm i -g serverless
npm i

Set environment variables locally (Twilio account credentials can be found here).

• TWILIO_ACCOUNT_SID
• TWILIO_AUTH_TOKEN
• MY_PHONE_NUMBER

Deploy

Deploy directly with sls deploy

Ensure the function responds with expected Twiml with sls invoke -f forward-call Expected response

<?xml version="1.0" encoding="UTF-8"?><Response><Say>Hello...</Say><Dial>+441...</Dial></Response>

Configure phone numbers in Twilio Console selecting Function and this service

TODO:

• fix github actions

Further reading

• github.com/twilio-labs/serverless-framework-integration.

• serverless docs on CI/CD
• Due to poor actions support from sls it's likely sensible to move to twilio-cli or host TwiML function on aws