00564cam a2200145 a 4500952009900000999001300099020002100112082001700133100001400150245003500164260003200199300003500231650014500266942000700411  00104070aRIUbRIUd2020-10-01l0o004.678 HELp2378r2020-10-01 00:00:00t1w2020-10-01yBK  c688d688  a0072131837 (pbk)00a004.678bHEL1 aHeld, Gil10aVoice and data internetworking  aNew YorkbMcGraw-Hillc2001  axviii, 397 p.b: ill.c; 23 cm 0aData communicationaComputer networksaTelecommunicationvVoice communicationvData transmission vComputer network vVoIPvATMvTCP/IP vFC  cBK