The market for telecommunications networks and services is constantly changing. So is the regulatory approach. Technological progress creates new challenges for the creation of a level playing field between traditional and new operators and service providers. In this book, the authors present current research in the study of telecommunications. Topics discussed include electronic communications services in the world of apps; computer algebra and symbolic processing in modern telecommunication applications; and explicit form of three novel classes of multiplier-less linear phase selective 2D FIR filter function.