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FUNDAMENTALS OF DATA
THE TECHNICAL DETAILS
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backup baseband basic bits per second cable called capabilities carrier wave channel Chapter common carrier communica communication circuits communication services configurations connection data communication network data transmission database Datapac developed device dial dial-up division multiplexing EBCDIC echo suppressors encryption end communication processor Ensure error detection facilities Figure four-wire circuits frequency front end communication functions hertz host computer identify intelligent terminal interconnect interface layer located logged loop matrix microprocessor modem modulation month per remote multidrop munication network architecture Network cost node number of characters on-line operating organization OSI model packet switching network parity bit perform polling problems protocol pulse retransmission satellite signal specific synchronous System Network Architecture telephone numbers teleprocessing monitor Teletex test equipment tion transaction transmitted United utilize various vendors voice grade voice grade circuits wire yes yes yes