Freeman, Roger L. Practical data communications / Roger L. Freeman - 2nd ed. - New York, N.Y. : Wiley-Interscience, c2001 - 825 p. : ill. - Wiley series in telecommunications and signal processing . Includes bibliographical references and index ISBN: 0471393029 Subjects--Topical Terms: DATA TRANSMISSION SYSTEMS LC Class. No.: TK5105 / F733P 2001