得罪人
发表于 2025-3-25 06:39:36
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EVEN
发表于 2025-3-25 08:34:23
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gnarled
发表于 2025-3-25 15:03:57
Book 2010 instruction,....Experiencing education with 3D virtual worlds,....Expanding educational boundaries through multi-school collaboration,....Adapting e-learning to different learning styles,....The student blog as reflective diary...With its blend of timely ideas and forward thinking, .Learning and In
muscle-fibers
发表于 2025-3-25 18:02:48
obtaining more efficient network utilization when used for data traffic. There are a number of problems that arise if an attempt is made to use packet switching techniques for voice traffic. We will discuss these later when we have had a look at the basic packet switching strategy.
制造
发表于 2025-3-25 23:40:34
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Culpable
发表于 2025-3-26 02:36:27
Michael J. Hannafin,Kathleen M. HannafinIntegrated Services Digital Network (ISDN) have been standardized over the last eight years by experts from all over the world under the aegis of the CCITT 1), the international standardizing body of the carriers of public communication networks. All the leading network carriers are working towards ISDN imple978-3-662-08036-8
chronicle
发表于 2025-3-26 07:55:29
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异教徒
发表于 2025-3-26 10:19:02
Alexandra Gasparinatou,Grammatiki Tsaganou,Maria Grigoriadouears bymany engineers working inthe area..."IEEE Computer"ISDN is a slimbut very effective book dealing with almostevery aspect of the evolution ofpublic communications net-works...I highly recommend this book to engineerswho arenew either to the field of ISDN or to specific ISDN topics.Itis clear, concise, a978-3-642-84665-6978-3-642-84663-2
松鸡
发表于 2025-3-26 14:07:45
ears bymany engineers working inthe area..."IEEE Computer"ISDN is a slimbut very effective book dealing with almostevery aspect of the evolution ofpublic communications net-works...I highly recommend this book to engineerswho arenew either to the field of ISDN or to specific ISDN topics.Itis clear, concise, a978-3-642-84665-6978-3-642-84663-2
CHIP
发表于 2025-3-26 17:11:38
A. Aubteen Darabi,David W. Nelson,Norbert M. Seelr Anschlußleitungen in Berlin 1980/81 zeigten, daß die vorgeschlagenen Bitraten von meist 80 kbit/s auf Teilnehmerleitungen bis zu 4 km erreicht werden konnten. Dies führte wiederum dazu, daß die ersten von CCITT. verabschiedeten Empfehlungen über ISDN 1984 weitaus höhere Bitraten für die einzelnen