BSNL is an Indian state owned enterprise with its headquarters in Janpath, New Delhi.
It started its operations in 2000 when it took over from the former Central Government Departments of Telecom Services (DTS) and Telecom Operations (DTO). Hence, it is the oldest service provider of telephony and fixed line services and under the brand name CellOne it provides GSM cellular services.
It also provides CDMA technology with the help of its comprehensive optical fiber network for fixed line and landline services all over India.
It has presence in all the 21 telecommunication circular circles but not in Mumbai and Delhi where it is operated by MTNL. It has the widest network connecting every corner in the country to another with a many customizable tariff plans for customers to choose from according to their preference. It has taken upon itself to provide the telephony and broadband services to rural India bridging the gap between urban and rural segments of the country.
BSNL was also the provider of telegram services since 1855 and it discontinues this service in 2013 foraying into web-based messaging system in 2010 operated through the old telegraph offices. After the boost of mobile industry landline market has been on a decline and thus the market share of BSNL is declining. BSNL was once the largest telecom service provider in the country but now is in the losses from many years.
With renewed focus on connectivity and providing better services to the customer BSNL is working towards gaining its lost market share to private companies like Airtel, Vodafone and Idea. Now, after 10 years of showing losses it has managed to gain an operative profit. It is also planning to partner with technology giants to rollout 4G services in 14 telecom circles.