00328nam a2200121 a 450000500170000002000150001708200160003210000230004824500530007125000120012426000440013630000260018020251203110736.0  a8120326075  a004.62bSTA  aStallings, William  aISDN and broadband ISDN with frame relay and ATM  a4th ed.  aNew DelhibPrentice-Hall of Indiac2004  axvi, 542p.c26 cm. PB