HLTOF - Hellenic Telecommunications Organization S.A. 2020 Q4 - Results - Earnings Call Presentation February, 26 2021 01:24 PM Hellenic Telecommunications Organization S.A. The following slide deck was published by Hellenic Telecommunications Organization S.A. in conjunction with their 2020 Q4 earnings call. For further details see: Hellenic Telecommunications Organization S.A. 2020 Q4 - Results - Earnings Call Presentation