available to all users at an affordable price regardless of their geographical location; 7. Subscriber: any natural person or legal entity which is party to a contract with a seller of publicly available electronic communications services for the supply of such services; 8. Wide-screen television service: a television service which consists wholly or partially of programmes produced to be displayed in a full-height, wide-screen format. 9. Carrier pre-selection: a possibility offered subscribers of telephone services enabling them to direct certain classes of telephone communications to specific service providers, selected in advance, without having to use the prefix of the service provider in question; 10. Electronic communications undertaking: a natural person or legal entity which has notified the Post and Telecom Administration (PTA) of the proposed operation of electronic communications services or an electronic communications network; 11. Electronic communications undertaking with significant market power: an undertaking defined by PTA as having significant market power; 12. Electronic communications network: transmission systems and, where applicable, switching or routing equipment and other resources which permit the conveyance of signals by wire, radio, optical signals, electricity distribution systems, high-voltage lines or other electromagnetic means, including networks for radio and television broadcasting and cable television networks; 13. Electronic communications infrastructure: Any sort of device, device components, wiring, equipment or similar objects which are especially intended to establish or operate electronic communications, whether for purposes of transmission or reception; 14. Electronic communications service: a service provided wholly or partially by the conveyance of signals on electronic communications networks; 15. Electronic communications: any type of transmission and receipt of symbols, signals, writing, images and sounds, or any sort of communication on lines, by radio or other electromagnetic systems; 16. Application program interface (API): software interfaces between applications, made available by broadcasters or service providers, and the resources in the enhanced digital television equipment for digital television and radio services; 17. Prefix: a number which a user selects prior to a telephone number to gain access to a service provider; 18. Local loop: a copper line connecting the NTP at a subscriber's residence with the main distribution frame (MDF) or equivalent facility of the public telephone network; 19. Network termination point (NTP): the physical point at which a subscriber is provided with access to a public communications network; 20. User: a natural person or legal entity using or requesting to use a public communications network; 21. Number and address: a series of symbols used to identify individual subscribers in electronic communications infrastructures; 22. Co-location: access to space and technical services required to accommodate rightholders' equipment and connect it without difficulty; 23. Merger: the definition of a merger shall be as provided for in the Competition Act; 24. Interconnection: physical and logical connection of electronic communications networks enabling users to communicate with other users or gain access to services provided by another electronic communications undertaking. It makes no difference whether the service is provided by the network owner or other parties which may have access to the electronic communications network; 3/34