For some people, answering machine message gets truncated. Why?

Answering Machine Detection in CallHub

After a call is answered, CallHub listens for 5 seconds to detect whether the call is answered by a human or an answering machine.

• If an answering machine is detected, the system waits for 2 seconds of silence.

• These 2 seconds of silence indicate that the initial greeting on the answering machine is complete, and the machine is ready to record messages.

• CallHub then plays the audio file into the answering machine.

Accuracy of Detection

• Answering machine detection is not 100% accurate. The accuracy rate is around 60–70%.

• Failure rates are higher for landlines with answering machines that have a greeting message shorter than 5 seconds.

• On cell phones, failure rates are also higher because voicemail is handled by the telecom carrier, which adds another layer of complexity.

Best Use Case

Voice Broadcasting is best suited for calls where you expect contacts to answer directly.

This ensures that your message reaches the intended recipient with minimal risk of being lost in voicemail or an answering machine.

After a call is answered, CallHub listens for 5 seconds to determine if a human or an answering machine has picked up. If an answering machine is detected, then it waits for 2 seconds of silence. 2 seconds is silence, indicating that the initial greeting in the answering machine is complete and the machine is waiting for the messages. CallHub will then play the audio file into the answering machine.

Answering machine detection is not accurate 100% of the time. It is accurate at about 60-70%. The failure rates are higher on landlines with answering machines with an initial greeting message less than 5 seconds long.

Although the failure rates are almost the same across all the platforms, the failure rates are higher for cell phones because the telecom carrier handles the voicemail on a cell phone.

Voice broadcasting is better suited for calls optimized for contacts answering the call.