@BOOK{ iet:/content/books/te/pbte019e, author = {R. E. Farr}, keywords = {underlying theory;matching equipment;telecommunication traffic;private system cost;telecommunication system;cost-effective solution;telecommunication tariffs;traffic measurement;communication problem;telecommunication facility;traffic-carrying capacity;telecommunication costs;public-network tariff option;telecommunication network;}, title = {Telecommunications Traffic, Tariffs and Costs. An Introduction for Managers}, publisher = {Institution of Engineering and Technology}, year = {1988}, series = {Telecommunications}, url = {https://digital-library.theiet.org/;jsessionid=1keq5wmmbbo4e.x-iet-live-01content/books/te/pbte019e} }