This handbook provides network design novices with an understanding of the major types of network design problems and practitioners with a handy reference to this complex area of data communications. Uses basic and advanced mathematics to cover key problems such as location of multiplexers, number and configuration of multiplexer and concentrator ports for specific terminal populations, means of routing multidrop lines to optimize their costs, types of line facilities for use under different networking conditions, and much more. Also included are a large selection of practical networking problems and solutions as well as examples of methods to perform economic comparisons between different communications services.