Bharat Sanchar Nigam Limited is a state-owned telecommunications company headquartered in New Delhi, India. BSNL is one of the largest Indian cellular service providers, with over 87.1 million subscribers as of April 2011, and the largest land line telephone provider in India. However, in recent years the company's revenue and market share plunged into heavy losses due to intense competition in Indian telecommunications sector.
BSNL is India's oldest and largest communication service provider. It had a customer base of 90 million as of June 2008. It has footprints throughout India except for the metropolitan cities of Mumbai and New Delhi, which are managed by Mahanagar Telephone Nigam Limited. As of June 30, 2010, BSNL had a customer base of 27.45 million wireline and 72.69 million wireless subscribers.
Following are the main telecom services provided by BSNL:

1. Universal Telecom Services
2. Cellular Mobile Telephone Services
3. WLL-CDMA Telephone Services
4. Internet
5. Intelligent Network
5. 3G
6. IPTV
7. FTTH
8. Helpdesk:
9. VVoIP