This technically oriented introduction to the telecommunications and telephone industry examines the terminology of public and private telecommunications systems and networks, and applications to voice and data switching and transmission. Suitable as both a reference and a useful introduction for newcomers, this volume introduces and clearly elucidates basic terms through examples and analogies to familiar experiences; focuses on the practical selection and implementation of an actual private telecommunications system (Ch. 13); includes many open-ended questions for thought; offers end-of- chapter problems; and provides charts and guidelines for decision-making processes.