telecommunication networks are interconnected on a national regional and global basis and the quality of telecommunication services applied in one network or one country influences the endtoend quality of that service so the quality cannot be considered only at national or regional level but also needs to be considered globally a harmonized and common approach to regulating qos would enable greater quality prospects irrespective of the locations of the consumer and service provider it is intended to be used as a guiding tool for telecommunication national regulatory agencies nras or government ministries in charge of qos and qoe quality of experience parameters and measurements as defined by itut as well as enforcement mechanisms