26) subscription contract means a publicly available electronic communications services contract for the provision of publicly available electronic communications services to the end-user, the content of which is to establish and preserve a necessary connection with the public electronic communications network; [RT I, 23.03.2011, 1 – entry into force 25.05.2011] 27) end-user means a subscriber who does not provide publicly available electronic communications services; 28) end-to-end connectivity means connectivity between end-users; 29) short number means a decimal number consisting of three to six digits which may be used to provide publicly available electronic communications services or to use simplified dialling when accessing a communications undertaking or other addressees, including the emergency service; [RT I 2007, 63, 397 – entry into force 17.12.2007] 30) short access code means a digit or sign or a combination of these which is associated with a number of a subscriber in the Estonian numbering plan and which is used for the provision of publicly available electronic communications services to the subscriber; 301) machine-to-machine communications service means establishing a connection between two or more machines or between a human and a machine via a public electronic communications network without using two-way transfer of speech communications; [RT I, 15.12.2021, 1 – entry into force 01.02.2022] 31) mobile telephone service means a publicly available electronic communications service for making and receiving national and international calls at an undetermined location and for access to emergency services by using a number or a short access code associated with a number in the Estonian or international telephone numbering plan for establishing partial or complete radiocommunication; 32) mobile telephone network means a public electronic communications network without stationary termination points which enables the transmission of calls and complies with the requirements established for the mobile telephone network; [RT I, 23.03.2011, 1 – entry into force 25.05.2011] 321) multiplexer means a device for the transformation of media services or data communication services into an integral digital data flow which is transmitted to radio transmission equipment; [RT I, 06.01.2011, 1 – entry into force 16.01.2011] 322) multiplexing service means an electronic communications service whereby the owner of a multiplexer transforms media services or data communication services into an integral digital data flow and transmits it by means of radio transmission equipment; [RT I, 06.01.2011, 1 – entry into force 16.01.2011] 33) number means, in accordance with ITU Recommendation E.164, a decimal number used for the provision of publicly available electronic communications services; 34) number portability means the possibility of a subscriber to preserve a number of which the subscriber has been granted use on the basis of a subscription contract if the subscriber changes the provider of electronic communications services or the geographical location of use of the communications services; 341) number-based interpersonal communications service means an interpersonal communications service that allows connecting with numbers in the Estonian or international numbering plan; [RT I, 15.12.2021, 1 – entry into force 01.02.2022] 342) number-independent interpersonal communications service means an interpersonal communications service that does not allow connecting with numbers in the Estonian or international numbering plan; [RT I, 15.12.2021, 1 – entry into force 01.02.2022] 35) numbering means numbers, short numbers, service numbers, identification codes and access codes determined in the numbering plan; 36) access code means a sign, digit or combination of digits which is dialled before a certain number or short number; 37) leased line means a connection for the non-switched transmission of signals between two points in the public electronic communications network; [RT I, 23.03.2011, 1 – entry into force 25.05.2011] 38) leased line service means a publicly available electronic communications service which consists in grant of use of a leased line to a subscriber; 39) radio interference means an electromagnetic wave which interferes with the operation of equipment and systems, including navigation equipment, or which otherwise interrupts, prevents or seriously distorts other legitimate radiocommunication or the provision of a media service; [RT I, 06.01.2011, 1 – entry into force 16.01.2011] 391) radio local area network means a low-power access system operating within a small range and using radio frequencies without a frequency authorisation; [RT I, 15.12.2021, 1 – entry into force 01.02.2022] 392) radio interface means the technical norm applicable to the use of radio frequency; [RT I, 15.12.2021, 1 – entry into force 01.02.2022] 40) radio transmission equipment means equipment used for the transmission of signals on a radio frequency channel; 41) radio frequency means the oscillation frequency of an electromagnetic wave freely propagating in open space in the frequencies of up to 3000 GHz; [RT I, 17.05.2016, 1 – entry into force 13.06.2016] Electronic Communications Act Page 5 / 89