<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>EU Commission Delegated Regulation (EU) 2021/654  setting single maximum Union-wide voice termination rates(Commission Delegated Regulation (EU) 2021/654 of 18 December 2020 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, 18.12.2020)</a></li><li><a href=https://www.boe.es/buscar/act.php?id=BOE-A-2022-10757 target=_blank>General Telecommunications Law(Ley 11/2022, de 28 de junio, General de Telecomunicaciones, adopted on 30/06/2022, Article 18(1)(f))</a></li><li><a href=https://www.boe.es/buscar/act.php?id=BOE-A-2004-21841 target=_blank>Decree on Electronic Communication Markets, Access and Numbering(Real Decreto 2296/2004, de 10 de diciembre, por el que se aprueba el Reglamento sobre mercados de comunicaciones electrónicas, acceso a las redes y numeración, adopted on 31 December 2004, last amended on 11 June  2009, Capítulo III, Article 11)</a></li></ul>