"dialling code" meaning in English

{
  "forms": [
    {
      "form": "dialling codes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dialling code (plural dialling codes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Telephony",
          "orig": "en:Telephony",
          "parents": [
            "Electronics",
            "Telecommunications",
            "Technology",
            "Communication",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "In the UK, the dialling code for Coventry is 024.",
          "type": "example"
        },
        {
          "text": "From the UK, the international dialling code for China is 0086.",
          "type": "example"
        }
      ],
      "glosses": [
        "An area code."
      ],
      "id": "en-dialling_code-en-noun-jEXOiIep",
      "links": [
        [
          "area code",
          "area code"
        ]
      ],
      "raw_glosses": [
        "(UK) An area code."
      ],
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "dialling code"
}

{
  "forms": [
    {
      "form": "dialling codes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dialling code (plural dialling codes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with usage examples",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Telephony"
      ],
      "examples": [
        {
          "text": "In the UK, the dialling code for Coventry is 024.",
          "type": "example"
        },
        {
          "text": "From the UK, the international dialling code for China is 0086.",
          "type": "example"
        }
      ],
      "glosses": [
        "An area code."
      ],
      "links": [
        [
          "area code",
          "area code"
        ]
      ],
      "raw_glosses": [
        "(UK) An area code."
      ],
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "dialling code"
}