The document summarizes the history and development of the telecom industry in India. It discusses how the first telephone exchanges were established in major cities in 1881. The Department of Telecom was established in 1975 to oversee telecom services nationwide. In the 1990s, the sector was opened to private investment. Major reforms between 2000-2011 established an independent regulator and increased competition. Subscriber growth has increased dramatically, from 28.5 million in 2000 to over 943 million by 2012. The top telecom companies in India are discussed. Challenges facing the industry like subscriber growth, network issues, and regulatory policies are also summarized.