Telephony
Voicemail detection
Voicemail detection identifies whether an outbound call reached a live person or an answering system, then selects the appropriate next action.
Voicemail detection identifies whether an outbound call reached a live person or an answering system, then selects the appropriate next action.
What Voicemail detection means
Voicemail detection identifies whether an outbound call reached a live person or an answering system, then selects the appropriate next action.
Detection matters because a live greeting and a voicemail greeting require different behavior. The system may listen for timing, speech patterns, tones, silence, or provider signals. No detector is perfect, so the workflowWorkflowA workflow is a defined sequence of steps, decisions, actions, delays, and outcomes used to complete a business process. should tolerate false positives and false negatives without creating a confusing experience.
How it works
After the call connects, the telephony system evaluates early audio or call-state signals. It classifies the answer and passes the result to the workflow. A voicemail outcome may triggerTriggerA trigger is an event or condition that starts, resumes, changes, or stops an automated workflow. a recorded message, hangup, scheduled retry, SMS, or task. A live outcome continues into the intended conversation.
Practical use cases
Leaving a concise message after an opted-in callback attempt
Separating live conversations from machine answers in reporting
Triggering an alternate-channel follow-up after voicemail
Test voicemail detection with real carrierCarrierA carrier is a telecommunications provider that transports voice calls or messages between phone numbers and networks. traffic and the actual message strategy. Aggressive detection can interrupt people; slow detection can create awkward silence.
Frequently asked questions
Is voicemail detection always accurate?
No. Personalized greetings, call screening, long pauses, carrier behavior, and background audio can cause misclassification.
What should happen after voicemail is detected?
The next step should follow the approved cadenceCadenceA cadence is a planned sequence of calls, texts, emails, delays, and retries used to follow up until a lead responds, books, opts out, or becomes inactive. and consent context. Options include leaving a message, scheduling a retry, sending a permitted text, or ending the workflow.
Source: Thoughtly’s conversation history documentation.
Related concepts: power dialerPower dialerA power dialer automatically calls contacts in sequence while keeping one person or automated agent available for each connected conversation., cadence, sms follow up, call screening assistCall Screening AssistCall Screening Assist helps a Thoughtly voice agent respond when a mobile screening service asks who is calling and why..