Written by an experienced practitioner of the art of voice and data communications, this book offers the most comprehensive coverage available -- in both breadth and depth -- of the full range of telecommunications. Focuses on the management aspects of both voice and data applications. Explores the impact that legislation has had on telecommunications. Explains multiplexing in both technical and non-technical terms. Features an exceptionally comprehensive discussion on how to design the outside plant and the reasons behind "why we design as we do." Covers in detail how central office switching systems work.