{
  "$schema": "/api/schemas/documents.schema.json",
  "apiVersion": "1.1.0",
  "lastModified": "2026-10-15T16:40:56.038Z",
  "sourcePath": "src/main/data/docs",
  "docId": "RFC4660",
  "document": {
    "abstract": "The SIP event notification framework describes the usage of the Session Initiation Protocol (SIP) for subscriptions and notifications of changes to the state of a resource. The document does not describe a mechanism whereby filtering of event notification information can be achieved. This document describes the operations a subscriber performs in order to put filtering rules associated with a subscription to event notification information in place. The handling, by the subscriber, of responses to subscriptions carrying filtering rules and the handling of notifications with filtering rules applied to them are also described. Furthermore, the document conveys how the notifier behaves when receiving such filtering rules and how a notification is constructed. [STANDARDS-TRACK]",
    "abstract$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML abstract",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
      "updated": "2026-10-14T18:50:40.850Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "authors": [
      {
        "name": "Hisham Khartabil"
      },
      {
        "name": "Eva Leppanen"
      },
      {
        "name": "Mikko Lonnfors"
      },
      {
        "name": "Jose Costa-Requena"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
      "updated": "2026-10-14T18:50:40.850Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "docId": "RFC4660",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
      "updated": "2026-10-14T18:50:40.850Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "docLabel": "IETF RFC 4660",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
      "updated": "2026-10-14T18:50:40.850Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "docNumber": "4660",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
      "updated": "2026-10-14T18:50:40.850Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "docTitle": "Functional Description of Event Notification Filtering",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
      "updated": "2026-10-14T18:50:40.850Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "docType": "Standard",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
      "updated": "2026-10-14T18:50:40.850Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "doi": "10.17487/RFC4660",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
      "updated": "2026-10-14T18:50:40.850Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "href": "https://doi.org/10.17487/RFC4660",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
      "updated": "2026-10-14T18:50:40.850Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "keywords": [
      "Presence"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": [
        "Event State Subscription",
        "Presence",
        "Filter Criteria"
      ],
      "overridden": true,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
      "updated": "2026-10-15T16:40:56.038Z",
      "version": "extractDocs.js@commit:0f51bb226575"
    },
    "pages": "31",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
      "updated": "2026-10-14T18:50:40.850Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "publicationDate": "2006-09-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
      "updated": "2026-10-14T18:50:40.850Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
      "updated": "2026-10-14T18:50:40.850Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "references": {
      "bibliographic": [
        "RFC3863",
        "RFC3856",
        "RFC3858",
        "RFC3857",
        "orphan/RFC4660/h:7da1a429"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=11 proseBlocks=16 skippedAnchorBlocks=13",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
        "updated": "2026-10-14T18:50:40.850Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "normative": [
        "RFC2119",
        "RFC3261",
        "RFC3265",
        "RFC4663",
        "RFC4661",
        "RFC3851"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
        "updated": "2026-10-14T18:50:40.850Z",
        "version": "extractDocs.js@commit:673dd514c094"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc4660/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
      "updated": "2026-10-14T18:50:40.850Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
        "updated": "2026-10-14T18:50:40.850Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "amendedBy": [
        "RFC6665"
      ],
      "amendedBy$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
        "updated": "2026-10-14T18:50:40.850Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "errataExist": true,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
        "updated": "2026-10-14T18:50:40.850Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "errataUrl": [
        "https://www.rfc-editor.org/errata/rfc4660",
        "https://www.rfc-editor.org/errata_search.php?rfc=4660",
        "https://www.rfc-editor.org/rfc/inline-errata/rfc4660.html"
      ],
      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
        "updated": "2026-10-14T18:50:40.850Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
        "updated": "2026-10-14T18:50:40.850Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "statusNote": "Proposed Standard",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
        "updated": "2026-10-14T18:50:40.850Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4660/",
        "updated": "2026-10-14T18:50:40.850Z",
        "version": "extractDocs.js@commit:673dd514c094"
      }
    }
  }
}