Bharti Airtel has paid Rs 8312.4 crore to the Department of Telecom towards dues for spectrum acquired in the recently concluded 5G auctions. With this payment, Sunil Bharti-led Bharti Airtel has paid four years of 2022 spectrum dues upfront. “This upfront payment coupled with the moratorium on spectrum dues and adjusted gross revenue (AGR) related payments for four years will free up future cash flows and allow Airtel to dedicate resources to single-mindedly concentrate on the 5G roll out,” the company said on Wednesday.