## Documentation Index

Fetch the complete documentation index at: [/llms.txt](https://docs.cognigy.com/llms.txt)

Use this file to discover all available pages before exploring further.

The `hangup` verb terminates the call and ends the session.

```json
{
  "verb": "hangup",
  "headers": {
    "X-Reason" : "maximum call duration exceeded"
  }
}
```

## Configuration

The following table lists the available parameters:

| Parameter | Type | Description | Required |
| --- | --- | --- | --- |
| headers | object | An object containing SIP headers to include in the `BYE` request. | No |

## More Information

- [NO_ANSWER](https://docs.cognigy.com/voice-gateway/references/events/NO_ANSWER)
- [USER_BUSY](https://docs.cognigy.com/voice-gateway/references/events/USER_BUSY)

Last modified on June 10, 2026