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This page outlines how Callers categorizes call statuses based on telephony data, real-time analysis, and post-call processing. Each status is determined by specific criteria, as detailed below.
No Answer / Busy
Description: These statuses reflect the outcome of telephony connectivity attempts.
Source: Received directly from Twilio or SIP providers via standard SIP response codes (e.g., 408 for No Answer, 486 for Busy)
Processing: No modifications are applied; these statuses are logged as provided by the telephony layer.
Voicemail
Description: Indicates the call reached a voicemail system rather than a live person.
Detection methods:
- Twilio Identification: Twilio flags the call as voicemail based on its telephony signaling.
- Real-Time Transcript Analysis: During the call, Callers analyzes the audio transcript in real-time using proprietary models to identify voicemail patterns (e.g., automated greetings, beeps, or extended silence).
- Post-Call Transcript Review: After the call ends, the full transcript is re-analyzed to retroactively confirm or classify it as voicemail based on content (e.g., phrases like “leave a message”).
Model Improvement: Detection models are continuously refined using real-world call data to enhance accuracy over time.
Do Not Call
Description: Assigned when the recipient explicitly requests no further contact.
Criteria: Triggered by clear statements such as “never call me again,” “remove me from your list,” or similar unambiguous requests.
Processing: Once identified, the number is flagged to prevent future calls.
Wrong Number
Description: Indicates the call reached an incorrect or unintended recipient.
Criteria: Applied when the recipient explicitly states “this is the wrong number,” “you have the wrong person,” or equivalent phrasing.
Processing: Logged based solely on the recipient’s response.
Call Me Later
Description: Suggests the recipient is unavailable now but open to a future call.
Criteria:
- Explicit Request: The recipient says they cannot speak currently and requests a later call (e.g., “call me tomorrow,” “try me later”).
- Implicit Short Call: Only one party speaks (e.g., the recipient answers but does not engage), and the call duration is less than 5 seconds. In such cases, it is still classified as “Call Me Later” to assume potential future availability.
Processing: Marked for follow-up based on these conditions.
Interested / Not Interested
Description: Assigned to connected calls that do not fall into the above categories, indicating the recipient’s level of interest.
Criteria:
- Applies to calls that successfully connect (i.e., not “No Answer” or “Busy”) and are not classified as “Voicemail,” “Do Not Call,” “Wrong Number,” or “Call Me Later.”
- Classification as “Interested” or “Not Interested” is determined by predefined interest criteria specific to the campaign (e.g., engagement level, intent signals).
Processing: Evaluated based on the conversation content and campaign goals. 
