Glossary/Voice AI

    What is answering machine detection (AMD)?

    Answering machine detection (AMD) is technology that determines whether an outbound call was answered by a human or a voicemail system. It lets calling systems respond appropriately — for example, ending the call when voicemail picks up instead of playing a message to a machine.

    How does AMD work?

    It analyzes the first seconds of audio (greeting length, tone patterns, beeps) to classify human vs machine; it can run in sync or async modes with different speed/accuracy tradeoffs.

    Why AMD matters for AI calling

    It protects the experience (no AI talking to voicemail), protects budgets (no wasted call minutes), and supports respectful outreach. A common approach is ending the call and logging it as voicemail.

    AMD accuracy and 'unknown' results

    No AMD is perfect; ambiguous results are typically treated as human to avoid hanging up on a real person.

    See how it works in TextConvo.

    Book a demo to see RCS, 10DLC-registered SMS, and AI orchestration live.