(i) The department of telecommunications under the Ministry of Communications started the telex service in 1963 to transmit typed messages from one part of the country to another rapidly.
(ii) In 1969, the telex service started in Devanagari script in Delhi.
(iii) Later, it spread all over the country.
(iv) This service began to be used in different fields. With the rise of internet after 1990, the significance of this service reduced.