curl --request POST \
  --url https://example.com/api/v1/project/{projectSlug}/{env}/outbound-calls \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "channelConnectionId": "cc_01a09438",
  "to": {
    "type": "phone",
    "number": "+14155550123"
  },
  "idempotencyKey": "order-4821-attempt-1",
  "clientReferenceId": "order-4821",
  "amdMode": "off"
}
'

{
  "success": true,
  "data": {
    "outboundCallId": "<string>",
    "phase": "accepted",
    "initiationState": "created"
  }
}

{
  "success": true,
  "data": {
    "outboundCallId": "oc_01a0a4af5a417f5186af",
    "phase": "accepted",
    "initiationState": "submitted"
  }
}

{
  "success": false,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "requestId": "<string>"
  }
}

{
  "success": false,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "requestId": "<string>"
  }
}

{
  "success": false,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "requestId": "<string>"
  }
}

{
  "success": false,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "requestId": "<string>"
  }
}

{
  "success": false,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "requestId": "<string>"
  }
}

{
  "success": false,
  "error": {
    "code": "<string>",
    "message": "<string>",
    "requestId": "<string>"
  }
}