Telephone system:
- general assessment: local and long distance service provided throughout all regions of the country, with services primarily concentrated in the urban areas; steady improvement is taking place with the recent admission of private and private-public investors, but combined fixed and mobile telephone density remains low at about 20 for each 100 persons nationwide and much lower for persons in rural areas; fastest growth is in cellular service with modest growth in fixed lines
- domestic: mobile cellular service (both CDMA and GSM) introduced in 1994 and organized nationwide into four metropolitan areas and 19 telecom circles each with about three private service providers and one state-owned service provider; in recent years significant trunk capacity added in the form of fiber-optic cable and one of the world's largest domestic satellite systems, the Indian National Satellite system (INSAT), with 6 satellites supporting 33,000 very small aperture terminals (VSAT)
- international: country calling code - 91; a number of major international submarine cable systems.