00485cam a22001572  4500001001100000005001700011008004100028020002800069040001500097100003600112245005600148250001300204260003900217300001600256650005500272000000606020151217145829.0070912s         xx           000 0 eng d  a8120326075 :cKES 2,450  aKABUcKABU1 aStallings, William.@000014822310aISDN and  broadband  ISDN with frame relay and ATM.  a 4th ed.  aNew Delhi :bPrentice Hall,c1999.  axvi, 542 p. 0aIntergrated services digital networks.@0000157429