We
have to admit that it has come to be a dire necessity for the people who are
traveling abroad, to have calling cards with them. In fact, it is noticeable
that carrying calling cards during a long distance travel has become so common
that it is no more thought to be something special or extraordinary. Now- a-
days, calling cards have proved to be one of the most efficient telecommunication
services.

Calling
cards are generally of three types. These are international calling cards, overseas
calling cards and long- distance calling cards. There are, of course, many
other types of calling cards, but they are scarcely so much popular as the
mentioned calling cards are.

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