{
  "@context": {
    "@version": 1.1,
    "schema": "https://schema.org/",
    "telefonie": "https://developers.telefonie.com/schema/",
    "xsd": "http://www.w3.org/2001/XMLSchema#",

    "Call": "telefonie:Call",
    "Message": "telefonie:Message",
    "PhoneNumber": "schema:ContactPoint",
    "Conference": "telefonie:Conference",
    "Recording": "telefonie:Recording",

    "id": {
      "@id": "schema:identifier",
      "@type": "xsd:string"
    },
    "status": {
      "@id": "telefonie:status",
      "@type": "xsd:string"
    },
    "direction": {
      "@id": "telefonie:direction",
      "@type": "xsd:string"
    },
    "from": {
      "@id": "schema:sender",
      "@type": "xsd:string"
    },
    "to": {
      "@id": "schema:recipient",
      "@type": "xsd:string"
    },
    "body": {
      "@id": "schema:text",
      "@type": "xsd:string"
    },
    "duration": {
      "@id": "schema:duration",
      "@type": "xsd:integer"
    },
    "start_time": {
      "@id": "schema:startTime",
      "@type": "xsd:dateTime"
    },
    "end_time": {
      "@id": "schema:endTime",
      "@type": "xsd:dateTime"
    },
    "price": {
      "@id": "schema:price",
      "@type": "xsd:string"
    },
    "price_unit": {
      "@id": "schema:priceCurrency",
      "@type": "xsd:string"
    },
    "recording_url": {
      "@id": "telefonie:recordingUrl",
      "@type": "xsd:anyURI"
    },
    "phone_number": {
      "@id": "schema:telephone",
      "@type": "xsd:string"
    },
    "country_code": {
      "@id": "schema:addressCountry",
      "@type": "xsd:string"
    },
    "friendly_name": {
      "@id": "schema:name",
      "@type": "xsd:string"
    },
    "date_created": {
      "@id": "schema:dateCreated",
      "@type": "xsd:dateTime"
    },
    "date_sent": {
      "@id": "telefonie:dateSent",
      "@type": "xsd:dateTime"
    },
    "error_code": {
      "@id": "telefonie:errorCode",
      "@type": "xsd:integer"
    },
    "error_message": {
      "@id": "schema:description",
      "@type": "xsd:string"
    },
    "capabilities": {
      "@id": "telefonie:capabilities",
      "@type": "@id"
    },
    "media_url": {
      "@id": "schema:contentUrl",
      "@type": "xsd:anyURI"
    }
  }
}