42) radio frequency band means a radio frequency range determined for a certain use in the Radio Regulations annexed to the Constitution and Convention of the International Telecommunications Union and in the Estonian radio frequency allocation plan; 43) radio frequency channel means a part of a radio frequency band which is necessary for the transmission of signals by means of radio transmission equipment and which is defined by the centre frequency and bandwidth or by the edge frequencies; 431) radio frequency sharing means the access of two or more persons to using the same radio frequency band in an agreed procedure; [RT I, 15.12.2021, 1 – entry into force 01.02.2022] 44) radio equipment means electrical or electronic equipment, which emits or receives radio frequencies for the purpose of radio communication and/or radiodetermination, or electrical or electronic equipment which is completed with an accessory so as to emit or receive radio frequencies for the purpose of radiodetermination; [RT I, 17.05.2016, 1 – entry into force 13.06.2016] 441) putting into service of radio equipment means the first use of radio equipment in the European Union by end-users; [RT I, 17.05.2016, 1 – entry into force 13.06.2016] 442) radio equipment class means the radio equipment having defined, characteristic and uniform technical specifications and purpose, manner and possibilities of use and the radio interface for which the radio equipment is designed; [RT I, 17.05.2016, 1 – entry into force 13.06.2016] 45) radiocommunication means the establishment of a connection and the transmission of signals for the purpose of communication of information, in which electromagnetic waves propagating in open space are used as the information carrier; 451) radiodetermination means the determination of the position, velocity or other characteristics of an object, or the obtaining of information relating to those parameters, by means of the propagation properties of radio frequencies; [RT I, 17.05.2016, 1 – entry into force 13.06.2016] 46) radio receiving equipment means equipment used for the receipt of signals on a radio frequency channel; 461) roaming service means a publicly available electronic communications service by which the provider of mobile telephone services allows its subscriber to use mobile telephone services in another mobile telephone network; [RT I 2007, 63, 397 – entry into force 17.12.2007] 462) international code of mobile communications terminal equipment (hereinafter terminal equipment identity code) means a unique electronic code of mobile telephone network terminal equipment containing information about the equipment manufacturer, model and serial number; [RT I 2009, 37, 252 – entry into force 10.07.2009] 463) broadcasting network means a public electronic communications network created for the provision of media services; [RT I, 06.01.2011, 1 – entry into force 16.01.2011] 47) [Repealed – RT I, 17.05.2016, 1 – entry into force 13.06.2016] 471) associated service means such service associated with an electronic communications network or with the provision of electronic communications services which enables or supports the provision of electronic communications services by means of the specified network or service. Associated services include also number translation, conditional access system and electronic programme guide as well as identity, location and presence services; [RT I, 23.03.2011, 1 – entry into force 25.05.2011] 472) associated facility means those associated services, physical infrastructures and other facilities or elements associated with an electronic communications network or electronic communications services which enable or support the provision of services by means of that network or services or have the potential to do so. Associated facilities include also buildings or entries to buildings, building wiring, antennae, towers and other supporting structures, ducts, conduits, masts, manholes and cabinets; [RT I, 15.12.2021, 1 – entry into force 01.02.2022] 48) restriction of provision of communications services means partial or full restriction or suspension, pursuant to law or a publicly available electronic communications services contract, of provision or use of publicly available electronic communications services without cancellation of the publicly available electronic communications services contract; 49) [Repealed – RT I, 23.03.2011, 1 – entry into force 25.05.2011] 50) [Repealed – RT I, 23.03.2011, 1 – entry into force 25.05.2011] 51) interconnection line means a leased line used for interconnection which passes through the interconnection point; 52) interconnection point means a point in a public electronic communications network which is used for interconnection of public electronic communications networks and ensures interoperability of the public electronic communications networks and provided communications services; [RT I, 23.03.2011, 1 – entry into force 25.05.2011] 521) special interpersonal communications service means an interpersonal communications service that provides bidirectional real time transfer of video, text and voice between users in two or more locations; [RT I, 15.12.2021, 1 – entry into force 01.02.2022] 53) message means a set of signals transmitted over the public electronic communications network between the sender and recipient; Page 6 / 89 Electronic Communications Act