b) Promoting an effective and fair competition among service providers; c) Ensuring the efficient use of the scarce resources required for telecommunications; and d) Encouraging investment in, and efficient use of, infrastructure used to provide telecommunications services. Article 3 Definitions In this Decree-Law, unless the context indicates otherwise, the following terms shall have the meanings set out below: Access The making available of facilities, network elements, systems, software and operational support services by one service provider to another for the purpose of providing telecommunications services; Administrator An Administrator of the Board of Administration of the Authority; Subscriber Any person who is a party to a contract entered into with a provider of public telecommunications services, including contracts for prepaid and post-paid telecommunications services; Authority National Communications Authority; Consumer Any natural person who uses or seeks to use a public telecommunications service that is offered on conditions that are that are standard, previously defined and not subject to negotiation; Concession Contract The Concession Contract entered into between the Democratic Republic of Timor-Leste and Timor Telecom on July 19, 2002; Control The power to determine, directly or indirectly, the actions of another person in any manner, whether through the ownership of shares or other securities (held directly or through intermediary entities) or an agreement or arrangement of any type; Decree-Law The present Decree-Law, Decree-Law [X]/2012, setting forth the legal framework applicable to the telecommunications sector of the Democratic Republic of Timor-Leste;