> ## Documentation Index
> Fetch the complete documentation index at: https://docs.callers.ai/llms.txt
> Use this file to discover all available pages before exploring further.
# Call statuses
> Understanding how Callers classifies call outcomes across telephony, real-time analysis, and post-call processing.
### Overview
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”).
* **No meaningful engagement**: When there is no genuine two-way exchange, the call defaults to “Call Me Later” to preserve potential future availability. The exact cases are listed in the [Call Me Later vs Not Interested](#call-me-later-vs-not-interested) table below.
**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.”
* For genuine two-way conversations, classification as “Interested” or “Not Interested” is determined by the AI classifier against predefined interest criteria specific to the campaign (e.g., engagement level, intent signals).
* A call is also marked “Not Interested” when the recipient disengages by action rather than words — see the [Call Me Later vs Not Interested](#call-me-later-vs-not-interested) table below.
**Processing**: Evaluated based on the conversation content and campaign goals.
### Call Me Later vs Not Interested
When a lead does not really engage, the deciding factor between **Call Me Later** and **Not Interested** is usually *how the call ended*: a call that drops on its own leans toward Call Me Later, while the lead actively hanging up leans toward Not Interested. Longer, two-way conversations are always handed to the AI classifier.
| Situation | Status |
| :------------------------------------------------------------------------------------------------------------------------------ | :------------------------------------------------------------------------------------------------- |
| Neither party speaks (agent and recipient both silent) | Call Me Later |
| One-sided reply, under \~2 seconds of speech | Call Me Later |
| Agent speaks, recipient never replies, and the call ends on its own (silence timeout, connection issue, or ended by the system) | Call Me Later |
| Agent speaks, recipient never replies, but the recipient manually hangs up | Not Interested |
| Any inbound call that hangs up immediately | Not Interested |
| Longer, two-way conversation | Interested / Not Interested — decided by the AI classifier against the campaign's success criteria |