00297nam a2200121Ia 4500100001900000250000600019654001300025245005800038260004500096082001400141300000800155546001200163  aStallings/ W.   a4  aComputer  aISDN  &  Broadband  ISDN  With frame  relay  and  ATM  bPrentice Hall of IndiaaNew Jerseyc1999  a4.69bSTA  a542  aENGLISH