CELLONE is the mobile ( GSM ) post-paid service of BSNL. At this web site one can easily access the monthly bill throughout India and have the option for making online payments too. The requirements are the Mobile Number and the Account Number. There is a lot of other information regarding the other services provided by the BSNL like - Telecom, BSNL News, Media Talk, Current News, Business, Sports, Education, Entertainment, Travel, Telecom News Links, Knowledge Base, and Telecom Guide. It also provides information regarding the other services like EXCEL, the online All India Telephone Directory, and the internet connections. There is also space dedicated to FAQs.