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Basic Concepts of Data Communications
Basic Terms and Concepts
Major Components in a Data
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applications AT&T bandwidth binary byte Calculation called CCITT CDRM channel Chapter characters circuit circuit switching coaxial cable communications line communications system components configuration connection data bases data communications data flow data link control data terminal equipment data transmission delay devices disk distributed EBCDIC electrical equipment error Ethernet example facilities Figure frame frequency front end full-duplex functions half-duplex HDLC header host industry input INTELSAT interface inventory ISDN kbit/s layer load logical mode modem modulation multiplexers node noise operating optic fibers organization overhead packet Packet switching parameters path personal computer polling polling/selection problem processing protocol ratio receiving request response routing satellite SDLC sending sequence session signal specific standards switching synchronous techniques telephone terminal throughput traffic transaction transmitted update user data vendors VTAM wire