History CH 7 - Science and Technology — Social Studies STD 9 — Question

(i) In 1972, Overseas Communication Service was established in Mumbai for the Management of International Telecommunication Service.

(ii) In 1976, the International Subscriber Dialled Telephone Service started to connect Mumbai and London directly on the phone.

(iii) Alongside the telephone service, services like telex, teleprinter and radio images started. In 1986, Videsh Sanchar Nigam Limited (VSNL) took a big leap in this field. Before that, Mahanagar Telephone Nigam Limited (MTNL) was a public sector company for giving telephone service in big cities.

(iv) In the 1990s, Videsh Sanchar Nigam Limited held the distinction of being the main internet service provider in India. The contribution of Sam Pitroda in this field is significant.