Bharat Sanchar Nigam Ltd (BSNL) had on February 8, 2013, issued a circular dealing with the billing of various charges, including the port and interconnection charges, to be levied on private telecom operators by BSNL for allowing them access to various infrastructural and other facilities.
As there was a huge difference between the charges, which BSNL wanted to levy on private telecom operators, and the rates fixed by Telecommunication Interconnection (Port Charges) (Second Amendment) Regulations, the PSU firm issued the circular asking telecom firms to furnish bank guarantees for the differential amount.