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Tracking Call Status: How Can You Tell If a Human Answers the Phone?

Blog post from Twilio

Post Details
Company
Date Published
Author
Megan Speir
Word Count
890
Company Posts That Month
28
Language
English
Hacker News Points
-
Post removed?
No
Summary

A search for Answering Machine Detection (AMD) might lead to frequent failures across different handsets and voicemail providers, making it unreliable. To solve this problem, the solution is Call Screening or Human Detection, which uses a Turing test-like approach in reverse. It involves using the <Gather> verb to respond to keys pressed by a human, with the action attribute redirecting to a message the caller can hear only after pressing some key. This approach can be implemented in various programming languages, including Python, Ruby, Java, and PHP, with helper libraries available for each language. The implementation involves creating a TwiML response that includes a say statement, a gather verb, and an action attribute, which redirects to a message.xml file containing the final message.

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