TY - BOOK AU - Forouzan,Behrouz A. TI - Data communications and networking SN - 9789814577519 (pbk) U1 - 004.6 PY - 2013/// CY - New York PB - McGraw-Hill Education KW - Data transmission systems KW - Analog transmission KW - Digital transmission KW - Network Models KW - Physical layers KW - Switching KW - FC N1 - Includes bibliographical references, glossary and index ER -