OBS_VALUE: <ul><li><a href=https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=uriserv:OJ.L_.2021.137.01.0001.01.ENG target=_blank>Commission Delegated Regulation (EU) 2021/654 setting single maximum Union-wide voice termination rates(Commission Delegated Regulation (EU) 2021/654 supplementing Directive (EU) 2018/1972 of the European Parliament and of the Council by setting a single maximum Union-wide mobile voice termination rate and a single maximum Union-wide fixed voice termination rate, OJ L 137, p. 1–9, adopted on 18 December 2020)</a></li></ul>