regulatory authorities in electronic communications; 20. (new, SG No. 105/2011, effective 29.12.2011) participate in the Body of European Regulators for Electronic Communications and contribute to coordinated and consistent regulation; 21. (new, SG No. 105/2011, effective 29.12.2011) consider cases of non-compliance with the requirements to ensure the security and integrity of the public electronic communications networks and/or services; 22. (renumbered from Item 18, SG No. 17/2009, renumbered from Item 19, SG No. 105/2011, effective 29.12.2011) to perform the functions of a national standardization organization in dealings with the European Telecommunications Standardisation Institute (ETSI) and to participate in the work of the technical committees on standardization in the Republic of Bulgaria concerned with electronic communications; 23. (renumbered from Item 19, SG No. 17/2009, renumbered from Item 20, SG No. 105/2011, effective 29.12.2011) to keep the registers provided for in this Act; 24. (renumbered from Item 20, SG No. 17/2009, renumbered from Item 21, SG No. 105/2011, effective 29.12.2011) to consult the public, experts and officials, and the nation in the cases and according to the procedures provided for in this Act; 25. (renumbered from Item 21, SG No. 17/2009, renumbered from Item 22, SG No. 105/2011, effective 29.12.2011) to resolve disputes between undertakings; 26. (renumbered from Item 22, SG No. 17/2009, renumbered from Item 23, SG No. 105/2011, effective 29.12.2011) to consider complaints by end-users in the cases provided for in this Act. Article 31. (Amended, SG No. 105/2011, effective 29.12.2011) The Commission shall promote the development of the market in electronic communications networks and services, by means of: 1. applying regulatory measures to restrict the possible barriers to competition; 2. removing obstacles and barriers to competition within its competence; 3. (new, SG No. 105/2011, effective 29.12.2011) promoting investment and innovation in new and enhanced infrastructures, including by enduring that any access obligation takes account of the risk incurred by the investing undertakings and by permitting various cooperative arrangements between investors and parties seeking access to diversify the risk of investment, whilst ensuring that competition in the market is preserved and the principle of non-discrimination is respected; 4. (new, SG No. 105/2011, effective 29.12.2011) safeguarding competition to the benefit of consumers and promoting, where appropriate, infrastructure-based competition; 5. (new, SG No. 105/2011, effective 29.12.2011) taking account of the variety of conditions relating to competition and consumers that exist in the various geographic areas; 6. (renumbered from Item 3, SG No. 105/2011, effective 29.12.2011) extending non-discriminatory treatment to all undertakings providing electronic communications networks and/or services in similar circumstances; 7. (renumbered from Item 4 and amended, SG No. 105/2011, effective 29.12.2011) maintaining mutual cooperation with the other regulatory authorities and the European Commission for development of consistent regulatory practice and implementation of European Union law; 8. (new, SG No. 105/2011, effective 29.12.2011) imposing ex-ante specific regulatory obligations only where there is no effective and sustainable competition on a relevant market and amending or lifting such obligations where that condition is fulfilled; 9. (new, SG No. 105/2011, effective 29.12.2011) promoting regulatory predictability by ensuring a consistent regulatory approach over the periods covered under Article 157a herein. Article 32. (Supplemented, SG No. 105/2011, effective 29.12.2011) The Commission shall be vested with the following powers related to radio spectrum management for civilian needs and the geostationary orbital positions allocated to the Republic of Bulgaria by international agreements: 1. manage the radio spectrum and, to this end: (a) prepare the radio frequency management regulatory policy and promulgate the said policy in