TY - BOOK AU - Gehris,Dennis O. AU - Szul,Linda F. TI - Communication technologies SN - 0130400246 AV - TK5101 G437C PY - 2002/// CY - Upper Saddle River, N.J. PB - Prentice Hall KW - TELECOMMUNICATION KW - INFORMATION TECHNOLOGY N1 - Includes bibliographical references and index ER -