India’s state owned telecommunications company Bharat Sanchar Nigam Limited (BSNL) has revised five circle specific special tariff vouchers in Andhra Pradesh Telecom circle for prepaid GSM customers. The following STVs are revised: STV-59, STV-160, STV-135, STV-185 and STV-399. STV 135 offers used to offer free 200 minutes of on net calls along with free 200 minutes off net for  30 days which has...