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  2. Prepaid telephone call - Wikipedia

    en.wikipedia.org/wiki/Prepaid_telephone_call

    Phone cards sold by retailers are live (active) when purchased by consumers. Web sites offer prepaid Personal identification numbers (PINs) for calling; thus there is no physical phone card. Prepaid online calling cards are more convenient to use, because most of the companies provide the option of registering the phone and avoiding using PINs ...

  3. 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.

  4. List of telecom companies in India - Wikipedia

    en.wikipedia.org/wiki/List_of_telecom_companies...

    The 'airtel' brand is operated by Bharti Hexacom Limited in Rajasthan and North-East India. Bharti Airtel owns 70% of Bharti Hexacom, while TCIL (Government of India) owns the remaining 30%. [4] Subscriber count and active users include Bharti Hexacom. BSNL Mobile (2000) BSNL 92.26 55.67 4G, 3G, 2G Government of India (100%)

  5. 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 ...

  6. Keku - Wikipedia

    en.wikipedia.org/wiki/Keku

    KeKu, formed in April 2010, currently offers international calling to its users by assigning local numbers to contacts in 41 countries. [1] KeKu uses its own patented Smart Dial technology for its services. [2] Users can make use of KeKu's services via its iOS, Android and Google Chrome apps as well as in-browser calling from keku.com. [3] [4]

  7. Toll-free telephone number - Wikipedia

    en.wikipedia.org/wiki/Toll-free_telephone_number

    Toll-free calls are available both from mobile and landline phone operators. In Greece, the toll-free prefix is "800" followed by a seven-digit number or "807" followed by a four-digit number, used for phone card services only. In Hong Kong, toll-free numbers have the "800" prefix. [18] In Hungary, toll-free numbers have the "80" prefix.