00600    a2200169   4500020001500000050002200015100003000037245005300067264005400120300003100174500002000205650003000225650004400255650005500299650003100354650004500385  a0133081648  aHF5548.2 PAN 1997  aPanko, Raymond R.eauthor  aBusiness data communications /cRaymond R. Panko  aUpper Saddle River, NJ :b Prentice Hall, c1997.  axx, 556p. : bill. ; 24 cm  aIncludes index.  aData transmission systems  aLocal area networks (Computer networks)  aBusiness - Communication systems - Data processing  aBusiness - Data processing  aBusiness enterprises - Computer networks