<ul><li><a href=https://www.trai.gov.in/sites/default/files/Regulations_17042020.pdf target=_blank>The Telecommunication Interconnection Usage Charges(Sixteenth Amendment) Regulations, 2020(The Telecommunication Interconnection Usage Charges(Sixteenth Amendment) Regulations, 2020 (4 Of 2020) Telecom Regulatory Authority Of IndiaAdopted on 17th April, 2020)</a></li></ul>