2. Principles of Information Systems, Sixth Edition 1 Telecommunications and Networks Chapter 6

3. Principles of Information Systems, Sixth Edition 2 Chapter 6 Outline An Overview of Communications Systems Telecommunications Networks and Distributed Processing Telecommunications and Applications

4. Principles of Information Systems, Sixth Edition 3 Overview of Telecommunications Systems

5. Principles of Information Systems, Sixth Edition 4 Communications

6. Principles of Information Systems, Sixth Edition 5 Communications

7. Principles of Information Systems, Sixth Edition 6 Telecommunications

8. Principles of Information Systems, Sixth Edition 7 Telecommunications Media

9. Principles of Information Systems, Sixth Edition 8 Basic Media Characteristics Channel Types –Simplex channel –Half-duplex –Full-duplex channel Bandwidth –The range of frequencies that an electronic signal occupies on a given transmission medium. –Used colloquially to mean data rate Broadband –Transmission sent over a wide frequency band, –Used colloquially to mean a very high data transmission rate

10. Principles of Information Systems, Sixth Edition 9 Shannon’s Fundamental Law of Information Theory The information carrying capacity of a channel is directly proportional to its bandwidth - the broader the bandwidth, the more information that can be carried.

11. Principles of Information Systems, Sixth Edition 10 Media Types Twisted-Pair Coaxial Cable Fiber-Optic Cable Microwave Transmission (“wireless”)

12. Principles of Information Systems, Sixth Edition 11 Twisted-Pair Wire Cable

13. Principles of Information Systems, Sixth Edition 12 Coaxial Cable

14. Principles of Information Systems, Sixth Edition 13 Fiber Optic Cable

15. Principles of Information Systems, Sixth Edition 14 Microwave Transmission

16. Principles of Information Systems, Sixth Edition 15 Satellite Transmission

17. Principles of Information Systems, Sixth Edition 16 Cellular Transmission

18. Principles of Information Systems, Sixth Edition 17 Telecommunications Devices

19. Principles of Information Systems, Sixth Edition 18 Devices Modems: –Analog –Digital Special-purpose modems Multiplexers Front-end processors

20. Principles of Information Systems, Sixth Edition 19 Modems

21. Principles of Information Systems, Sixth Edition 20 Multiplexers

22. Principles of Information Systems, Sixth Edition 21 Front-End Processors

23. Principles of Information Systems, Sixth Edition 22 Carriers and Services

24. Principles of Information Systems, Sixth Edition 23 Carriers and Services Common carriers Value-added carriers Switched and dedicated lines Private branch exchange (PBX) Wide-area telecommunications service (WATS) Phone and dialing services Digital subscriber line (DSL) T1 Carrier

25. Principles of Information Systems, Sixth Edition 24 ISDN and Telecommunications Convergence

26. Principles of Information Systems, Sixth Edition 25 Carriers and Services

27. Principles of Information Systems, Sixth Edition 26 Networks & Distributed Processing

28. Principles of Information Systems, Sixth Edition 27 Basic Processing Strategies Centralized processing Decentralized processing Distributed processing

29. Principles of Information Systems, Sixth Edition 28 Network Topologies and Types Network topologies –Ring network –Bus network –Hierarchical –Star network –Hybrid network Network types –Local Area Networks –Wide Area Networks –International networks –Home and small business networks

30. Principles of Information Systems, Sixth Edition 29 Network Topologies

31. Principles of Information Systems, Sixth Edition 30 Local Area Networks

32. Principles of Information Systems, Sixth Edition 31 Wide Area Networks

33. Principles of Information Systems, Sixth Edition 32 Home and Small Business Networks

34. Principles of Information Systems, Sixth Edition 33 Terminal-to-Host

35. Principles of Information Systems, Sixth Edition 34 File Server

36. Principles of Information Systems, Sixth Edition 35 Client/Server

37. Principles of Information Systems, Sixth Edition 36 Communications Software and Protocols

38. Principles of Information Systems, Sixth Edition 37 Network Software and Protocols Network Software –Network operating systems (NOS) –Network management software Network Protocols –Open Systems Interconnection (OSI) model –Transmission Control Protocol/Internet Protocol (TCP/IP) –Systems Network Architecture (SNA) –Ethernet –Asynchronous Transfer Mode (TM) –Bluetooth

39. Principles of Information Systems, Sixth Edition 38 Open Systems Interconnection (OSI) Model

40. Principles of Information Systems, Sixth Edition 39 Network Interconnectivity Technology

41. Principles of Information Systems, Sixth Edition 40 Bridge, Routers, and Gateways

42. Principles of Information Systems, Sixth Edition 41 Telecommunications and Applications

43. Principles of Information Systems, Sixth Edition 42 Telecommunications and Applications Voice mail Electronic Software Distribution (ESD) Telecommuting Videoconferencing Electronic Data Interchange (EDI)

44. Principles of Information Systems, Sixth Edition 43 Videoconferencing

45. Principles of Information Systems, Sixth Edition 44 Electronic Data Interchange (EDI)

46. Principles of Information Systems, Sixth Edition 45 Public Network Services

47. Principles of Information Systems, Sixth Edition 46 Summary Communications - any process that permits information to pass from a sender to one or more receivers Telecommunications media - twisted- pair wire cable, coaxial cable, and fiber- optic cable Modems - convert signals from digital to analog for transmission, then back to digital Ethernet - the most widely installed local area network (LAN) technology

48. Principles of Information Systems, Sixth Edition 47 Principles and Learning Objectives Effective communication is essential to organizational success –DEFINE THE TERMS COMMUNICATION AND TELECOMMUNICATIONS AND DESCRIBE THE COMPONENTS OF A TELECOMMUNICATIONS SYSTEM.

49. Principles of Information Systems, Sixth Edition 48 Principles and Learning Objectives An unmistakable trend of communications technology is that more people are able to send and receive all forms of information over greater distances at a faster rate. –IDENTIFY THREE BASIC TYPES OF COMMUNICATIONS MEDIA AND DISCUSS THE BASIC CHARACTERISTICS OF EACH. –IDENTIFY SEVERAL TYPES OF TELECOMMUNICATIONS HARDWARE DEVICES AND DISCUSS THE ROLE THAT EACH PLAYS. –IDENTIFY THE BENEFITS ASSOCIATED WITH A TELECOM NETWORK. –NAME THREE DISTRIBUTED PROCESSING ALTERNATIVES AND DISCUSS THEIR BASIC FEATURES. –DEFINE THE TERM NETWORK TOPOLOGY AND IDENTIFY FIVE ALTERNATIVES.

50. Principles of Information Systems, Sixth Edition 49 Principles and Learning Objectives The effective use of telecommunications and networks can turn a company into an agile, powerful, and creative organization, giving it a long-term competitive advantage. –IDENTIFY AND BRIEFLY DISCUSS SEVERAL TELECOMMUNICATIONS APPLICATIONS.

51. Principles of Information Systems, Sixth Edition 50 End of Chapter 6