Enterprise manage information systems 6th by laudon ch08

Chapter Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Telecommunications, Networks, and Wireless Computing 8.1 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Objectives What are the features of a contemporary corporate telecommunications system? On what major technology developments are they based? What telecommunications transmission media should our organization use? What kind of networks and network services are appropriate for our organization? 8.2 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Objectives What telecommunications applications can be used for electronic business and electronic commerce? What issues should be addressed in telecommunications planning? 8.3 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Management Challenges Selecting appropriate technologies for enterprise networking Managing bandwidth 8.4 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing The Corporate Telecommunications System Telecommunications System • • • • • • 8.5 Facilitation of electronic communication Telephone systems Broadcast and cable TV Radio, satellite, and local area networks Internet Analog or digital © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing The Corporate Telecommunications System Features of Contemporary Telecommunications Systems Three Major Developments Shaping Contemporary Systems Client/server computing Packet switching TCP/IP and other communications standards 8.6 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing The Corporate Telecommunications System A corporate telecommunications system Figure 8-1 8.7 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing The Corporate Telecommunications System Features of Contemporary Telecommunications Systems Client/Server Computing • Powerful personal computers connect to network with one or more server computers • Has extended networking to parts of business that could not be served by centralized architecture • Processing load balanced over many smaller machines 8.8 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing The Corporate Telecommunications System Features of Contemporary Telecommunications Systems Packet Switching • Messages broken into “packets” before transmission • Packets include destination and error-checking information • Packets travel independently using routers; reassembled into original message at destination 8.9 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing The Corporate Telecommunications System Packet-switched networks and packet communications Figure 8-2 8.10 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Communications Networks Wireless Networks: Wi-Fi and Bluetooth • Hot spot: Geographic location in which an access point provides public Wi-Fi network service • Bluetooth: Standard for wireless personal area networks that can transmit up to 722 Kbps within 10-meter area 8.27 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Communications Networks Wide Area Networks • • Span broad geographic distances Can consist of combination of: • • • • • 8.28 Switched lines Dedicated lines Microwave Satellite communications Private WANs expensive to support © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Communications Networks Wide Area Networks • Metropolitan Area Network (MAN) • • • Value-Added Networks • • 8.29 Scope between LAN and WAN Limited distance; faster and less expensive than WAN Private, third-party managed, data only networks Subscription basis © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Communications Networks Window on Organizations Is the World Falling for Wi-Fi? • What management, organization, and technology factors account for different patterns of Wi-Fi adoption in various countries? • What value can Wi-Fi service provide to businesses? 8.30 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Communications Networks Broadband Network Services and Technologies • • • • • • 8.31 Frame relay Asynchronous transfer mode (ATM) Integrated Services Digital Network (ISDN) Digital subscriber line (DSL) T1 line Network convergence © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Electronic Business and Electronic Commerce Technologies Electronic Mail and Groupware • E-mail • • Groupware • 8.32 Eliminates telephone tag and costly long-distance telephone charges Enables work groups at different locations to participate in discussion forums and work on shared documents and projects © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Electronic Business and Electronic Commerce Technologies Window on Management Monitoring Employees on Networks: Unethical or Good Business? • Should managers monitor employee e-mail and Internet usage? Why or why not? • Describe an effective e-mail and Web use policy for a company 8.33 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Electronic Business and Electronic Commerce Technologies Voice Mail and Fax • Voice mail • • Fax • 8.34 Digitizes spoken message and transmits it over a network Digitizes and transmits documents over telephone lines © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Electronic Business and Electronic Commerce Technologies Teleconferencing, Dataconferencing, and Videoconferencing • • • 8.35 Teleconferencing • Ability to confer with a group of people simultaneously Data conferencing • Two or more users can edit and modify data files simultaneously Videoconferencing • Participants are able to see each other over video screens © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Electronic Business and Electronic Commerce Technologies Digital Information Services, Distance Learning, and E-Learning • Digital Information Services: • • Distance learning • • Education or training delivered over a distance to individuals in one or more locations E-learning • 8.36 Online services providing general and business information, such as LexisNexis, AOL, Dow Jones News Instruction delivered online using the Internet or private networks © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Electronic Business and Electronic Commerce Technologies Electronic Data Interchange • Computer-to-computer exchange between two organizations of standard transaction documents, such as invoices, purchase orders • Minimizes paper-handling and data input; lowers transaction costs • Transmits structured data with fields, unlike email 8.37 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Electronic Business and Electronic Commerce Technologies Electronic data interchange (EDI) Figure 8-10 8.38 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Developing a Business-Driven Telecommunications Plan Implementation Issues: Seven Factors 8.39 Distance Services Points of access Utilization Cost Security Connectivity © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Chapter Case Study Will New Systems Keep Delta Flying? Analyze Delta using the competitive forces and value chain models What is Delta’s business strategy? What is the role of information systems and telecommunications technology in this strategy? 8.40 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Chapter Case Study Will New Systems Keep Delta Flying? Assess Delta’s Digital Nervous System (DNS) effort What value does it provide the company? How does it support Delta’s business strategy? What problems at Delta can be solved with information systems? What problems cannot be solved with systems? 8.41 © 2005 by Prentice Hall ... 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications, Networks, and Wireless Computing Management Challenges Selecting appropriate technologies for enterprise. .. communication Telephone systems Broadcast and cable TV Radio, satellite, and local area networks Internet Analog or digital © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter... that could not be served by centralized architecture • Processing load balanced over many smaller machines 8.8 © 2005 by Prentice Hall Essentials of Management Information Systems, 6e Chapter Telecommunications,