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  2. File:Civil Affairs Calling Cards.pdf - Wikipedia

    en.wikipedia.org/wiki/File:Civil_Affairs_Calling...

    This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.

  3. Telephony Application Programming Interface - Wikipedia

    en.wikipedia.org/wiki/Telephony_Application...

    Dialing rules are used to transform the canonical phone number into a dialable calling sequence for the modem, depending on the user's location. The dialing rules include variable-length dialing for area code, trunk access and international access prefixes, as well as central office access and calling card/credit card numbers. [1] [2]

  4. Visiting card - Wikipedia

    en.wikipedia.org/wiki/Visiting_card

    Visiting card of Johann van Beethoven, brother of Ludwig van Beethoven. A visiting card, also called a calling card, was a small, decorative card that was carried by individuals to present themselves to others. It was a common practice in the 18th and 19th century, particularly among the upper classes, to leave a visiting card when calling on ...

  5. Telephone card - Wikipedia

    en.wikipedia.org/wiki/Telephone_card

    A telephone card, calling card or phone card for short, is a credit card-size plastic or paper card used to pay for telephone services (often international or long-distance calling). It is not necessary to have the physical card except with a stored-value system; knowledge of the access telephone number to dial and the PIN is sufficient.

  6. List of mobile telephone prefixes by country - Wikipedia

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

    Mobile phones use geographic area codes (two digits): after that, all numbers assigned to mobile service have nine digits, starting with 6, 7, 8 or 9 (example: 55 15 99999–9999). 90 is not possible, because collect calls start with this number.

  7. Rechargeable calling card - Wikipedia

    en.wikipedia.org/wiki/Rechargeable_calling_card

    In reality, the rechargeable calling card is a specialised form of a prepaid or debit account. To use the phone card, the user would call an access number (which is usually a toll-free telephone number), enter the "card number" (also called the PIN) and then dial the desired telephone number. The user could add value to the card at the same ...

  8. Telephone numbers in Guyana - Wikipedia

    en.wikipedia.org/wiki/Telephone_numbers_in_Guyana

    Print/export Download as PDF; Printable version; In other projects ... General Services 2008 (Data-Toll Free-Calling Card-Voice Mail) Location

  9. International call - Wikipedia

    en.wikipedia.org/wiki/International_call

    It can be made through a call-forwarding service that allows mobile phone users to associate an international phone number with a landline number within the United Kingdom. Users would dial a landline number and the call is then forwarded internationally. This allows mobile phone users to take advantage of their free minutes when accessing the ...