12 CAP. 399.] ELECTRONIC COMMUNICATIONS (REGULATION) of the provision of universal service; and (k) ensuring number portability between providers of voice communications services. (2) The performance of the tasks listed under sub-article (1) shall be without prejudice to any other tasks which the Authority is required to perform by law. (3) The Authority shall publish in an easily accessible form the tasks assigned to it under the Electronic Communications Code and where applicable those assigned to other competent authorities, as well as any change thereof. Added by: VII. 2004.18. 2. General provisions relating to the role of the Authority and the rights and obligations of undertakings Compliance when operating a network or providing a service. Added by: XVIII. 2000.31. Substituted by: VII. 2004.19. Amended by: XXX. 2007.22. 6. Any person shall install or operate any electronic communications network or provide any electronic communications service in Malta in compliance with this Act. Special obligations of providers of public electronic communications networks. Added by: XVIII. 2000.31. Substituted by: VII. 2004.19. Amended by: XXX. 2007.23; IX. 2011.7; LII. 2021.20. 7. An undertaking authorised by or under this Act to operate a public electronic communications network shall, in addition to complying with the provisions of this Act and with obligations in accordance with its authorisation, ensure: (a) that the capacity, quantity and features of the network are sufficient for providing and maintaining an efficient electronic communications network; (b) that the network is sufficient for and compatible with such international electronic communications services as the Authority may specify; (c) the security of the network and any extension thereof; and (d) that no person shall carry out any works or perform any other act, or be entrusted to carry out such works or perform such act, for the construction, repair, maintenance, alteration or control of any electronic communications networks and, or equipment unless he is duly qualified and possesses such qualifications to carry out such works or perform such act as may be prescribed in accordance with the provisions of article 47.