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  2. National conventions for writing telephone numbers - Wikipedia

    en.wikipedia.org/wiki/National_conventions_for...

    This was accomplished by adding the digit "9" to the beginning of any phone number that started with a "9" (government and semi-government connections), and adding the digit "3" to any phone numbers that did not start with the number "9". [1] It is common to write phone numbers as (0xx) yyyyyyy, where xx is the area code.

  3. Telephone number mapping - Wikipedia

    en.wikipedia.org/wiki/Telephone_number_mapping

    The number holder operator will be interconnected to other operators and will receive from them calls to his assigned range of numbers, for the calls to be terminated. In ENUM the number holder operator will typically be the gateway operator or, alternatively, will have an arrangement with a gateway operator, to whom he will transit the calls.

  4. List of mobile telephone prefixes by country - Wikipedia

    en.wikipedia.org/wiki/List_of_mobile_telephone...

    The specific problem is: outdated or irrelevant information needs to be removed, network operators updated and wikilinked, number notation harmonised. Please help improve this article if you can. ( April 2024 ) ( Learn how and when to remove this message )

  5. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.

  6. Telephone number - Wikipedia

    en.wikipedia.org/wiki/Telephone_number

    In rural areas with magneto crank telephones connected to party lines, the local phone number consisted of the line number plus the ringing pattern of the subscriber. To dial a number such as "3R122" meant making a request to the operator the third party line (if making a call off your own local one), followed by turning the telephone's crank ...

  7. Operator assistance - Wikipedia

    en.wikipedia.org/wiki/Operator_assistance

    A third number call or third party call is an operator assisted telephone call that can be billed to the party other than the calling and called party. The operator calls the third number for the party to accept the charges before the call can proceed. Time and charges was a service that could be requested of an operator before a call began ...

  8. Directory assistance - Wikipedia

    en.wikipedia.org/wiki/Directory_assistance

    For example, Sensis on 1234 is a premium operator-assist directory service that only certain Telstra customers are able to access. Other operator-assist directory services do exist, for example, CallConnect on 12456; however, these numbers are not guaranteed to be accessible from all phone providers within Australia.

  9. Call detail record - Wikipedia

    en.wikipedia.org/wiki/Call_detail_record

    the phone number of the subscriber originating the call (calling party, A-party) the phone number receiving the call (called party, B-party) the starting time of the call (date and time) the call duration; the billing phone number that is charged for the call; the identification of the telephone exchange or equipment writing the record