00873    a2200145   4500003000500000005001700005020001500022040000900037082001400046100002200060245004300082260003500125300001400160505055300174Nust20220728123609.0  a8120311183  cNust  a004.6,GUP  aGupta.C,Prakash C  aData Communications / cpraksh C Gupta  aNew DelhibPrentice Hallc1996  axiii,475p  aData Communication Concepts and Terminology (Page-1), Transmission Media (Page-21), Modems and Data Multiplexers (Page-73), Error Control (Page-122), References Models for Open Systems Interconnection (Page-143), The Physical Layer (Page-165), The Data Link Layer (Page-195), HDLC High Level Data Link Control (Page-227), The Network Layer (Page-253), CCITT X.25 Interface (Page-286), Local Area  Networks (Page-324), Media Access Control in local Area Networks (Page-342), Internetworking (Page-369), The Transport and Upper OSI Layers (Page-399).