Making a call to anyone or anywhere is so simple these days.
It is interesting, if we look around the history to find out when the first formal telephone service was established in India. Do you have any clue ?

In 1881, Oriental Telephone Company Limited of England was granted license for opening telephone exchanges at Calcutta, Bombay, Madras and Ahmedabad and the first formal telephone service was established in the country.

On 28 January 1882, Major E. Baring, Member of the Governor General of India’s Council declared open the Telephone Exchanges in Calcutta, Bombay and Madras. The exchange in Calcutta named the “Central Exchange” had a total of 93 subscribers in its early stage. Later that year, Bombay also witnessed the opening of a telephone exchange.

Source: http://en.wikipedia.org/wiki/Telecommunications_in_India