Bates, Regis J. Voice & data communications handbook / Voice and data communications handbook Regis J. (Bud) Bates, Donald W. Gregory - 5th ed. - New Delhi : Tata McGraw-Hill, c2007. - xxvii, 651 p. : ill., figs., tables ; 22 cm. - McGraw-Hill communications . Includes index. ISBN: 0070647666 LCCN: 2007271440 Subjects--Topical Terms: Telecommunication--Handbooks, manuals, etc. LC Class. No.: TK5105 / .B395 2007 Dewey Class. No.: 621.38221/ B294v