a) Report to the Authority regarding the types and volumes of complaints and requests for dispute resolution as well as information related to the procedures adopted in this matter; and b) Take such other measures as the Authority considers appropriate to ensure that complaints of and disputes with subscribers are satisfactorily addressed and that subscribers obtain prompt assistance with subscription, billing, collection, and such other matters as the Authority may require. 3. The imposition by the Authority of requirements pursuant to article shall be subject to paragraph 4 of article 19. Article 53 Quality of service 1. The Authority may: a) Require service providers to publish on their websites and points of sale comparable, adequate and up-to-date information on the quality of their services; b) Specify the quality of service parameters to be assessed and the content, form and manner of the information to be published in order to ensure that consumers have access to comprehensive, comparable, reliable and readily understandable information; and c) Set minimum quality of service requirements on service providers operating public telecommunications networks in order to ensure effective communications and prevent the blocking or slowing down of traffic. 2. The imposition by the Authority of requirements pursuant to this article shall be subject to paragraph 4 of article 19. CHAPTER XI DISPUTE RESOLUTION AMONG SERVICE PROVIDERS Article 54 Dispute resolution procedure 1. Any service provider that, after making a reasonable effort, fails to agree on the resolution of any dispute relating to any provision of the present Decree-Law or any regulatory measure approved thereunder, including any disputes relating to any anti-competitive acts pursuant to Chapter VI or to matters contained in Chapter VIII, may apply to the Authority for assistance in resolving the dispute. 2. After receipt of a request pursuant to the preceding paragraph, the Authority may: