Twilo Voice Integration

I was successfully able to add Twilio voice channel to my bot. When I call my Twilio number I receive an error message - “I am not found or not accessible.”

How can I resolve this error? What should my sample flow include in order to test the successful integration of Twilio Voice?

Please share a sample flow if possible. Thanks.

We hope you have published the bot. Also, please confirm that you are trying to integrate a consumer bot.