Bhubaneswar: Today the state-run BSNL introduced unlimited local & STD calls only to BSNL numbers at just Rs. 99, valid for 28 days. Users will not only get unlimited calling services, but also additional 300 MB data for 28 days. Not only this, BSNL has also introduced a new combo STV plan offering unlimited local and STD calls to any network at just Rs. 339 for 28 days, along with an added 1GB data.