USF ISM 6021 - Chapter 08 Telecommunications and Networks
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PowerPoint PresentationSlide 2Slide 3Slide 4Slide 5Slide 6Slide 7Slide 8Slide 9Slide 10Slide 11Slide 12Slide 13Slide 14Slide 15Slide 16Slide 17Slide 18Slide 19Slide 20Slide 21Slide 22Slide 23Slide 24Slide 25Slide 26Slide 27Slide 28Slide 29Slide 308.188TELECOMMUNICATIONSTELECOMMUNICATIONSAND AND NETWORKSNETWORKSChapter8.2THE TELECOMMUNICATIONS REVOLUTION•Telecommunications:Telecommunications: Communication Communication of information by electronic meansof information by electronic means•The marriage of computers and The marriage of computers and communications:communications: The 1996 The 1996 Telecommunications Deregulation and Telecommunications Deregulation and Reform ActReform Act•The Information Superhighway:The Information Superhighway: High- High-speed digital telecommunications speed digital telecommunications networks, accessible by the general publicnetworks, accessible by the general publicEssentials of Management Information SystemsEssentials of Management Information SystemsChapter 8 Telecommunications and NetworksChapter 8 Telecommunications and Networks8.3COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS SYSTEM•Computers to process informationComputers to process information•Terminals or any input/output devices Terminals or any input/output devices that send or receive datathat send or receive data•Communications processorsCommunications processors•Communications softwareCommunications softwareEssentials of Management Information SystemsEssentials of Management Information SystemsChapter 8 Telecommunications and NetworksChapter 8 Telecommunications and NetworksTelecommunications System Components8.4COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS SYSTEMEssentials of Management Information SystemsEssentials of Management Information SystemsChapter 8 Telecommunications and NetworksChapter 8 Telecommunications and NetworksComponents of a Telecommunications SystemFigure 8-18.5COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS SYSTEM•Transmit informationTransmit information•Establish interface between sender and Establish interface between sender and the receiverthe receiver•Route messages along most efficient Route messages along most efficient pathspathsEssentials of Management Information SystemsEssentials of Management Information SystemsChapter 8 Telecommunications and NetworksChapter 8 Telecommunications and NetworksFunctions of Telecommunications Systems8.6COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS SYSTEM•Perform elementary processing of Perform elementary processing of information information •Perform editorial tasks on data Perform editorial tasks on data •Convert message speed or formatConvert message speed or format•Control flow of informationControl flow of informationEssentials of Management Information SystemsEssentials of Management Information SystemsChapter 8 Telecommunications and NetworksChapter 8 Telecommunications and NetworksFunctions of Telecommunications Systems8.7COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS SYSTEMAnalog signalAnalog signal •Continuous waveform Continuous waveform •Passes through communications mediumPasses through communications medium•Used for voice communicationsUsed for voice communicationsEssentials of Management Information SystemsEssentials of Management Information SystemsChapter 8 Telecommunications and NetworksChapter 8 Telecommunications and NetworksTypes of Signals: Analog and Digital8.8COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS SYSTEMDigital signalDigital signal•Discrete waveformDiscrete waveform•Transmits data coded into two discrete Transmits data coded into two discrete states as 1-bits and 0-bitsstates as 1-bits and 0-bits•Used for data communicationsUsed for data communicationsModemModem•Translates computer’s digital signals into Translates computer’s digital signals into analog and vice versaanalog and vice versaEssentials of Management Information SystemsEssentials of Management Information SystemsChapter 8 Telecommunications and NetworksChapter 8 Telecommunications and NetworksTypes of Signals: Analog and Digital8.9COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS SYSTEMEssentials of Management Information SystemsEssentials of Management Information SystemsChapter 8 Telecommunications and NetworksChapter 8 Telecommunications and NetworksFunctions of the ModemFigure 8-28.10COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS SYSTEM•Twisted wire:Twisted wire: Telephone systemsTelephone systems•Coaxial cable:Coaxial cable: Cable televisionCable television•Fiber optics and optical networks:Fiber optics and optical networks: Dense wave division multiplexing (DWDM)Dense wave division multiplexing (DWDM)Essentials of Management Information SystemsEssentials of Management Information SystemsChapter 8 Telecommunications and NetworksChapter 8 Telecommunications and NetworksCommunications Channels8.11COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS SYSTEM•Wireless transmission:Wireless transmission: Microwave, Microwave, Satellites, Paging systems, Cellular Satellites, Paging systems, Cellular telephones, Personal communication telephones, Personal communication Services, Personal digital assistants, Services, Personal digital assistants, Mobile data networksMobile data networks•Transmission:Transmission: Baud, bandwidth Baud, bandwidthEssentials of Management Information SystemsEssentials of Management Information SystemsChapter 8 Telecommunications and NetworksChapter 8 Telecommunications and NetworksCommunications Channels8.12COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS SYSTEMEssentials of Management Information SystemsEssentials of Management Information SystemsChapter 8 Telecommunications and NetworksChapter 8 Telecommunications and NetworksFrequency Ranges for Communications Media and DevicesFigure 8-38.13Essentials of Management Information SystemsEssentials of Management Information SystemsChapter 8 Telecommunications and NetworksChapter 8 Telecommunications and NetworksFigure 8-4COMMUNICATIONS NETWORKSAmoco’s Satellite Transmission System8.14COMPONENTS AND FUNCTIONS OF A TELECOMMUNICATIONS SYSTEM•Front-end processor:Front-end processor: Manages communications for Manages communications for the host computerthe host computer•Concentrator:Concentrator: Collects and temporarily stores Collects and temporarily stores messagesmessages•Controller:Controller: Supervises communication traffic Supervises communication


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