 degradations (blocking, throt- tling, etc.) of particular OTT services and applications, such as periodical penalties (e.g. on daily, weekly or monthly basis), in accordance with national legislation. How- ever, one should note that fines will not change the QoS of the IAS in the short term when there is not enough capacity to support the desired bitrates as the main QoS parameter (after IAS availability in the first place) because such a case will require a longer time period for network capacity upgrade. The other possible measure to improve IAS QoS unpopular and unwanted: increasing prices of IAS services (or decreasing data caps for IAS) which will decrease Internet traffic due to lower afford- ability of IAS. In the cases of OTT services blocking and/or throttling, discrimination or similar measures applied by the ISP, the NRA could prohibit such restrictions which clearly violate network neutrality regulation. Such measures include the following: prohibit the ISP from blocking and/or throttling specific OTT services; prohibit discriminatory (in regard to network neutrality) traffic and congestion man- agement practices in regard to individual OTT services (e.g. prohibit noticed QoS differentiation within the IAS); set a minimum required QoS level in accordance with the development of the ICT/telecom technologies at the given time (e.g. European countries have set a target of at least 50% of their population to have IAS with minimum 100 Mbit/s after 2020) [6]. Also, available IAS speeds in downlink and uplink should be comparable to advertised/maximum speeds. Requirements and different measures in regard to network neutrality can refer to one or several ISPs or can be applied generally to all ISPs in the given country. However, the imposition of these requirements regarding IAS and network neutrality principles should be judged on the basis of their effectiveness, necessity, and proportionality. Effectiveness refers to efficient use of the measures regarding the results obtained from putting them into pract