RT Journal Article SR Electronic A1 Madleňáková, Lucia T1 JF Doprava a spoje YR 2007 VO 3 IS 1 SP 65 OP 72 UL https://tac.uniza.sk/artkey/das-200701-0008.php AB The paper talks about problemacy of telecommunication operator's position assessment on a world market. The paper includes position analysis of certain operators on a world market according to telecommunication service income and near profit. Comparing the selected years of operators, the evaluation of telecommunication market dynamics for a longer period and there is also a concentration level in telecommunication branch settled according to Herfindahl - Hirschman's index.