Mahanagar Telephone Nigam Limited (NYSE: MTE) is an Indian Government-owned telephone service provider in the cities of Mumbai, Thane, New Delhi, and Navi Mumbai in India. The company was a monopoly until 2000, when the telecom sector was thrown open to other service providers. 'Maha' = big or great, 'Nagar' = city or town, 'Mahanagar' = metropolis or megacity, 'Nigam' = venture or enterprise.