## Hang up call

**post** `/realtime/calls/{call_id}/hangup`

End an active Realtime API call, whether it was initiated over SIP or
WebRTC.

### Path Parameters

- `call_id: string`

### Example

```http
curl https://api.openai.com/v1/realtime/calls/$CALL_ID/hangup \
    -X POST \
    -H "Authorization: Bearer $OPENAI_API_KEY"
```

### Example

```http
curl -X POST https://api.openai.com/v1/realtime/calls/$CALL_ID/hangup \
  -H "Authorization: Bearer $OPENAI_API_KEY"
```