Answering machine detection: how dialers skip voicemail

Answering machine detection lets a dialer tell people from voicemail. Learn how AMD works, why it is never perfect, and how it saves agents time and money.

·3 min read

Published by Text2Sale · Updated . Product questions or corrections: support@text2sale.com.

On many lead lists, more calls reach voicemail than reach people. Without answering machine detection, an agent would hear every one of those greetings, wait for the beep and hang up, dozens of times an hour.

Answering machine detection, usually shortened to AMD, listens to the first moments of each answered call and decides whether a person or a machine picked up.

How AMD decides

People usually answer with a short greeting, like 'Hello?', and then pause, waiting for a reply. Voicemail greetings tend to be longer and continuous: 'Hi, you've reached Maria, I can't come to the phone right now...' AMD measures the length of the first burst of speech and the silence after it, and listens for beeps and fax tones.

If it hears a person, the call goes to the agent. If it hears a machine, the dialer hangs up and moves on.

Why it is never perfect

Some people answer with a long greeting, and some voicemail greetings are just a name. Background noise can confuse detection too. Every AMD system makes some mistakes in both directions.

When detection is unsure, Text2Sale treats the call as a person and connects it. A few seconds of voicemail in your ear is a smaller problem than dead air for a real person who said hello.

What AMD saves

Skipping machines saves agent time and keeps billed minutes down: calls detected as voicemail are hung up right away and marked as voicemail on your stats. Your live view shows how many dials went to voicemail, so you can see how much of a list is unreachable.

  • ✓Agents only hear calls a person answered
  • ✓Voicemail-detected calls are hung up right away
  • ✓Voicemail counts help you judge list quality

AMD and the abandoned-call rule

Detection takes a moment, and the clock for connecting a person to an agent starts when they finish their greeting. Detection that is too slow risks abandoned calls. Keep your browser phone ready so connected calls are picked up immediately.

Key takeaways

  • →AMD listens to the start of a call to tell people from voicemail.
  • →It is never perfect; unsure calls are best treated as people.
  • →Voicemail-detected calls in Text2Sale are hung up right away, which keeps billed minutes down.
  • →Fast pickup by the agent keeps AMD within the two-second rule.

Put this into practice with Text2Sale

Import leads, create follow-up campaigns, organize replies, and connect texting, calling, and appointments in one workspace.

Frequently asked questions

Can the dialer leave a voicemail for me?

Not today. Text2Sale hangs up on machines so you can move on; following up with a text is a cheap way to reach people who did not answer.

Why did I hear a voicemail greeting?

Detection was unsure and treated the call as a person. That is deliberate: it avoids leaving a real person in silence.

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