{
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    "abstract": "This memo updates RFC 4733 to add event codes for modem, fax, and text telephony signals when carried in the telephony event RTP payload. It supersedes the assignment of event codes for this purpose in RFC 2833, and therefore obsoletes that part of RFC 2833. [STANDARDS-TRACK]",
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    "authors": [
      {
        "name": "Henning Schulzrinne"
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      {
        "name": "Tom Taylor"
      }
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      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
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      "updated": "2026-10-13T22:23:53.061Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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    "docId": "RFC4734",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
      "updated": "2026-10-13T22:23:53.061Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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    "docLabel": "IETF RFC 4734",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
      "updated": "2026-10-13T22:23:53.061Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docNumber": "4734",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
      "updated": "2026-10-13T22:23:53.061Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docTitle": "Definition of Events for Modem, Fax, and Text Telephony Signals",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
      "updated": "2026-10-13T22:23:53.061Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docType": "Standard",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
      "updated": "2026-10-13T22:23:53.061Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "doi": "10.17487/RFC4734",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
      "updated": "2026-10-13T22:23:53.061Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "href": "https://doi.org/10.17487/RFC4734",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
      "updated": "2026-10-13T22:23:53.061Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "keywords": [
      "RTP",
      "DTMF"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
      "updated": "2026-10-13T22:23:53.061Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "pages": "47",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
      "updated": "2026-10-13T22:23:53.061Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "publicationDate": "2006-12-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
      "updated": "2026-10-13T22:23:53.061Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
      "updated": "2026-10-13T22:23:53.061Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "references": {
      "bibliographic": [
        "RFC3552",
        "RFC4040",
        "RFC4103",
        "T-REC-G.711.1988",
        "T-REC-H.324.2002",
        "T-REC-T.38.2003",
        "T-REC-T.101.1994",
        "T-REC-T.120.1996",
        "T-REC-V.17.1991",
        "T-REC-V.23.1988",
        "T-REC-V.27",
        "T-REC-V.29.1988",
        "T-REC-V.34.1998",
        "T-REC-V.90.1998",
        "T-REC-V.91.1999",
        "T-REC-V.90.2000",
        "T-REC-V.150.2003",
        "T-REC-V.152.2005",
        "orphan/RFC4734/h:599a774a"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=34 proseBlocks=41 skippedAnchorBlocks=37",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
        "updated": "2026-10-13T22:23:53.061Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "normative": [
        "RFC2119",
        "RFC2198",
        "RFC3711",
        "RFC4566",
        "RFC4733",
        "T-REC-G.164.1988",
        "T-REC-G.165.1993",
        "T-REC-T.30.2003",
        "T-REC-V.8.2000",
        "T-REC-V.18.2000",
        "T-REC-V.21.1988",
        "T-REC-V.25.1996",
        "T-REC-V.32.1993",
        "T-REC-V.32",
        "T-REC-V.18.2002",
        "T-REC-V.25.2001"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
        "updated": "2026-10-13T22:23:53.061Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc4734/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
      "updated": "2026-10-13T22:23:53.061Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
        "updated": "2026-10-13T22:23:53.061Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "amends": [
        "RFC4733"
      ],
      "amends$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
        "updated": "2026-10-13T22:23:53.061Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "errataExist": false,
      "errataExist$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/rfc4734/",
        "updated": "2026-10-13T22:23:53.061Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
        "updated": "2026-10-13T22:23:53.061Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "statusNote": "Proposed Standard",
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        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
        "updated": "2026-10-13T22:23:53.061Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
        "updated": "2026-10-13T22:23:53.061Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "supersedes": [
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      "supersedes$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4734/",
        "updated": "2026-10-13T22:23:53.061Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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}