21234: Invalid Machine Detection configuration value

Twilio returns this error when the MachineDetection value in a Voice request is not one of the supported AMD values, or when one of the optional AMD tuning parameters falls outside its allowed range. AMD is supported on the Calls API, Participants API, <Dial><Number>, and <Dial><Sip>.

• MachineDetection is set to a value other than Enable or DetectMessageEnd.
• One or more AMD tuning parameters is outside its allowed range: MachineDetectionTimeout, MachineDetectionSpeechThreshold, MachineDetectionSpeechEndThreshold, or MachineDetectionSilenceTimeout.

• Set MachineDetection to Enable for early human or machine detection, or to DetectMessageEnd if you need to wait for the end of a voicemail greeting.
• Keep AMD tuning parameters within their supported ranges: MachineDetectionTimeout between 3 and 59, MachineDetectionSpeechThreshold between 1000 and 6000, MachineDetectionSpeechEndThreshold between 500 and 5000, and MachineDetectionSilenceTimeout between 2000 and 10000.

• Answering Machine Detection
• Programmable Voice API Overview