AMD (or Human/Robot Definition System) is a technology that automatically detects the presence of an answering machine during a telephone conversation. It is used in voice bots to correctly plan further actions according to the script.
The system analyzes the call for approximately 10 seconds.
If one of the conditions is met during this time, it is considered that the answering machine has answered:
No words were detected in the voice stream.
More than 4 words were recorded in a short period of time.
Special information tones (SIT tones) were detected.
SIT tones are audio signals used to indicate that a number is unavailable or that an answering machine is in use. Some tones are audible to humans, while others are not and can only be recognized by equipment.
The parameters for analysis duration and number of words change periodically.
Disable or select the AMD detection mode — Background detection mode or Definition with blocking — when creating a call task. For more details, see the article Creating a call task.