{
  "$schema": "/api/schemas/documents.schema.json",
  "apiVersion": "1.1.0",
  "lastModified": "2026-10-12T20:14:32.069Z",
  "sourcePath": "src/main/data/docs",
  "docId": "RFC3856",
  "document": {
    "abstract": "This document describes the usage of the Session Initiation Protocol (SIP) for subscriptions and notifications of presence. Presence is defined as the willingness and ability of a user to communicate with other users on the network. Historically, presence has been limited to \"on-line\" and \"off-line\" indicators; the notion of presence here is broader. Subscriptions and notifications of presence are supported by defining an event package within the general SIP event notification framework. This protocol is also compliant with the Common Presence Profile (CPP) framework. [STANDARDS-TRACK]",
    "abstract$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML abstract",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
      "updated": "2026-10-12T20:14:32.069Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "authors": [
      {
        "name": "Jonathan Rosenberg"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
      "updated": "2026-10-12T20:14:32.069Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "docId": "RFC3856",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
      "updated": "2026-10-12T20:14:32.069Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "docLabel": "IETF RFC 3856",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
      "updated": "2026-10-12T20:14:32.069Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "docNumber": "3856",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
      "updated": "2026-10-12T20:14:32.069Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "docTitle": "A Presence Event Package for the Session Initiation Protocol (SIP)",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
      "updated": "2026-10-12T20:14:32.069Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "docType": "Standard",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
      "updated": "2026-10-12T20:14:32.069Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "doi": "10.17487/RFC3856",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
      "updated": "2026-10-12T20:14:32.069Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "href": "https://doi.org/10.17487/RFC3856",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
      "updated": "2026-10-12T20:14:32.069Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "pages": "27",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
      "updated": "2026-10-12T20:14:32.069Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "publicationDate": "2004-08-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
      "updated": "2026-10-12T20:14:32.069Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
      "updated": "2026-10-12T20:14:32.069Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "references": {
      "bibliographic": [
        "RFC2778",
        "RFC3588",
        "RFC2779",
        "RFC3211",
        "orphan/RFC3856/h:a801a63c"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=14 proseBlocks=18 skippedAnchorBlocks=15",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
        "updated": "2026-10-12T20:14:32.069Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "normative": [
        "RFC3261",
        "RFC3265",
        "RFC3859",
        "RFC2119",
        "RFC3861",
        "RFC3863",
        "RFC2246",
        "RFC3857",
        "RFC3840"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
        "updated": "2026-10-12T20:14:32.069Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc3856/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
      "updated": "2026-10-12T20:14:32.069Z",
      "version": "extractDocs.js@commit:00855ca34fe0"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
        "updated": "2026-10-12T20:14:32.069Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "amendedBy": [
        "RFC8996"
      ],
      "amendedBy$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
        "updated": "2026-10-12T20:14:32.069Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "errataExist": true,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
        "updated": "2026-10-12T20:14:32.069Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "errataUrl": [
        "https://www.rfc-editor.org/errata/rfc3856",
        "https://www.rfc-editor.org/errata_search.php?rfc=3856",
        "https://www.rfc-editor.org/rfc/inline-errata/rfc3856.html"
      ],
      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
        "updated": "2026-10-12T20:14:32.069Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
        "updated": "2026-10-12T20:14:32.069Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "statusNote": "Proposed Standard",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
        "updated": "2026-10-12T20:14:32.069Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3856/",
        "updated": "2026-10-12T20:14:32.069Z",
        "version": "extractDocs.js@commit:00855ca34fe0"
      }
    }
  }
}