The Twilio Voice Intelligence product allows for the uploading of pre-recorded conversations to transcribe and gather information from customers, following regulatory policies. To use this feature, a Twilio account, phone number with Voice capabilities, Node.js installed, and an AWS account are required. The process involves recording a call, downloading it as a WAV format, uploading it to an AWS S3 bucket, creating a pre-signed URL, and then using the Twilio Console to create a new Voice Intelligence Service that can analyze the uploaded call for keywords and determine intent. The service can be configured with language operators and used to transcribe and gather information from the call, with the results displayed in the console.