Voicemail detection
Detect answering machines and voicemail systems using the amd@v2 action. Branch your call flow based on whether a human or machine answers. Configurable detection sensitivity and timeout parameters.
Overview
Callr's Answering Machine Detection (AMD) uses the amd@v2 action to determine whether a live person or a voicemail system has answered an outbound call. Based on the result, your call flow can branch to different logic — for example, leaving a recorded message on voicemail or connecting a live agent when a human answers.
How It Works
When a call is answered, AMD analyzes the initial audio for patterns typical of voicemail greetings (long speech, beep tones). The detection returns a result that you use in conditional branching to route the call appropriately.
Configuration
Adjustable detection sensitivity to balance between false positives (human classified as machine) and false negatives (machine classified as human). Configurable wait time before making a determination. Works with all outbound call scenarios including broadcast calls and click-to-call.
Use Cases
Outbound sales campaigns that leave pre-recorded voicemails. Appointment reminder systems that adapt based on pickup type. Lead qualification calls that route to agents only when humans answer. Broadcast notifications with voicemail fallback.
Others features
We own our network
Global coverage
Order numbers in just one click in over 220 countries, including premium, vanity or toll-numbers.
Encrypted and secure
We offer state-of-the-art data encryption with HTTPS, SIP TLS & SRTP.
Reliable network
With multiple data centers and servers around the world, we offer a robust service you can rely on.
Registered carrier
We operate our own network for better performance, localization and support.
