Chapters VII-XIV of Act No. 75/1981, concerning income and property taxes, as subsequently amended, as appropriate, and the collectors shall submit the fees collected to the PTA on a monthly basis. Each year PTA shall publish information on the calculation of cost due to universal service obligations, a breakdown of payments by individual undertakings to the equalisation fund and an account of the benefits which the Administration considers electronic communications undertakings providing universal service have received. The Minister of Communications shall, in a Regulation on universal service, lay down more detailed instructions on financial contributions and equalisation fees in electronic communications services, including instructions on calculation of the cost of operating public electronic communications networks or providing public electronic communications service and on calculations of operating losses. 1) The provisions of this Article entered into force 1 January 2004 and shall not be implemented until the year 2005 for reported turnover in 2004, cf. Article 76. Article 23 Special electronic communications services If the Minister of Communications requests that undertakings, operations or services are carried out for the public good, for security reasons, or due to environmental considerations or regional interests, which may be expected to be unprofitable and are not included under universal services, PTA shall be entrusted with concluding a contract for such with an electronic communications undertaking following a competitive selection procedure. Costs which may be attributed to decisions of the Minister of Communications in accordance with the first paragraph shall as a rule be paid by the National Treasury as provided for in the annual budget. CHAPTER VII Interconnection of networks and services and access to them Article 24 Interconnection of networks Electronic communications undertakings operating public electronic communications networks or public electronic communications services shall have the right to and be obligated to negotiate interconnection of networks and services. PTA shall endeavour to ensure access and interconnection and interoperability of services in a satisfactory and efficient manner. 13/34