Bharat Sanchar Nigam Ltd (BSNL) is a state-owned telecommunications company in India. It was started in 1962 and is headquartered in Bijapur. BSNL provides landline, broadband, and mobile services including 3G. There have been several changes in BSNL over the years, including migrating from 2G to 3G mobile services, adopting ERP to reduce paperwork, updating call rates for prepaid and postpaid plans, enabling online billing and payments, and providing employee benefits like medical services. BSNL also offers cellular mobile services with features like MMS, GPRS, voice mail and international SMS.