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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-1
Real World Cases
Telecommunications Telecommunications and Networksand Networks
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-2
Real World Cases
Learning ObjectivesLearning Objectives1. Identify several major developments
and trends in the industries, technologies, and applications of telecommunications and Internet technologies.
2. Provide examples of the business value of Internet, intranet, and extranet applications.
3. Identify the basic components, functions, and types of telecommunications networks used in business.
4. Explain the functions of major types of telecommunications network hardware, software, media, and services.
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-3
Real World Cases
The Networked The Networked EnterpriseEnterprise
• Networking Converges Computing and Communications• Reduction of Geographic
Boundaries• Networked Enterprises•• Real World Real World Case 1Case 1--
Celanese Chemicals Celanese Chemicals and Othersand Others
Click to go toCase 1
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-4
Real World Cases
Trends in Trends in TelecommunicationsTelecommunications
Industry TrendsIndustry TrendsIndustry TrendsIndustry Trends Toward more competitive vendors, carriers, alliances
and network services, accelerated by deregulation and the growth of the Internet and the World Wide Web
Technology TrendsTechnology Trends Toward extensive use of Internet, digital fiber-optic, and wireless technologies to create high-speed local and global internetworks for voice, data, images, audio, and videocommunications
Application TrendsApplication Trends Toward the pervasive use of the Internet, enterprise intranets, and interorganizational extranets to support electronic business and commerce, enterprise collaboration, and strategic advantage in local and global markets
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-5
Real World Cases
Trends in Trends in TelecommunicationsTelecommunications
Services available todayServices available today……Full Service Spectrum•Broadcast TV•High-definition TV•Enhanced pay-per-view•Video-on-demand•Interactive TV•Interactive video games•Video catalog shopping•Distance learning•Desktop multimedia•Image networking•Transaction services•Internet access•Telecommuting•Videoconferences•Video telephony•Wireless Access•Cellular/PCS systems•POTS-Plain old telephone service
EntertainmentEntertainment
InformationInformationTransactionsTransactions
CommunicationsCommunications ENDBACK NEXT
The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-6
Real World Cases
Trends in Trends in TelecommunicationsTelecommunications
Technology TrendsTechnology Trends•Internet Networking Technologies•Open Systems•Connectivity•Interoperability•Digital Network Technologies•Higher Transmission Speeds•Move Larger Amounts of Information•Greater Economy•Lower Error Rates than Analog
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-7
Real World Cases
Trends in Trends in TelecommunicationsTelecommunications
Business ApplicationsBusiness Applications……•Creation of Business Value•Develop Strategic Capabilities•Overcome Geographic Barriers•Overcome Time Barriers•Overcome Cost Barriers•Overcome Structural Barriers
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-8
Real World Cases
Trends in Trends in TelecommunicationsTelecommunications
The Internet RevolutionThe Internet Revolution……Internet Applications•Surf•E-Mail•Discuss•Chat•Buy and Sell•Download•Compute•Other Uses
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-9
Real World Cases
Business Use of the Business Use of the InternetInternet
GE Power Systems: GE Power Systems: Using the Using the Internet CaseInternet Case
•Creation of a Power Plant Entirely on the Internet•Holding Virtual Meetings•Blueprints Exchanged and Modified in Real Time on the Web•Customers Can Watch as Turbine is Built from Anywhere•20-30% Reduction in Time to Build Turbine•1-2% Increase in Turbine Output•30% Increase in Sales Revenue END
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-10
Real World Cases
Business Use of the Business Use of the InternetInternet
Internet Adds Value to BusinessesInternet Adds Value to Businesses
Headquarters Suppliers
Remote OfficesCustomersBusiness Partners
InventoryManagement
Systems
The Internet
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-11
Real World Cases
Deriving Business ValueDeriving Business Value
ReduceReduceCosts ofCosts of
DoingDoingBusinessBusiness
Develop NewDevelop NewWebWeb--BasedBasedProductsProducts
IncreaseIncreaseCustomerCustomer
Loyalty andLoyalty andRetentionRetention
AttractAttractNewNew
CustomersCustomers
DevelopDevelopNew MarketsNew Marketsand Channelsand Channels
GenerateGenerateNewNew
RevenueRevenueSourcesSources
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-12
Real World Cases
The Role of IntranetsThe Role of Intranets•Intranets Redefined•Use of Web Browsers•TCP/IP Network Protocols•HTML Hypermedia•Internet-Like Environment•Extranet LinksHow Companies Derive Business ValueHow Companies Derive Business Value……
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-13
Real World Cases
The Role of IntranetsThe Role of IntranetsExisting
E-Mail, Voice-Mail Systems
ExistingDatabases
andEnterprise
Applications
HTML, MS Office,XML, Java, and
Other DocumentTypes
ExistingHardware
andNetworks
Communication andCollaboration
Business Operationsand Management
Web Publishing
Intranet Portal Management
FIREWALL
IntranetEnterpriseInformation
Portal
Employees
Everyone
Customers,Suppliers,
and Partners
Author, publish, andshare hypermedia
documents
Centrally administerclients, servers,
security, directory,and traffic
Secure, universalaccess to view
and use corporateand external data
Communicate andcollaborate with e-mail,
discussion forums,chat, and conferencing Intranet
Extranet
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-14
Real World Cases
The Role of IntranetsThe Role of Intranets
• Designer of Electronic Design Automation (EDA) Software Tools• 3,000 Employees Worldwide• Developed Intranet Called
OnTrack for 500 Managers• Created a Single Enterprise
Information Portal• Provided Immediate Instant
Information
Cadence OnTrack: Cadence OnTrack: Business Business Value of an IntranetValue of an Intranet
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-15
Real World Cases
The Role of ExtranetsThe Role of Extranets•Business Value of Extranets•Gaining Competitive Advantage•Virtual Private Networks•Firewalls and Security Issues•Interactive Web-Enabled Services to Business Partners
GraphicallyGraphically……END
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-16
Real World Cases
Partners,Consultants,Contractors
Consumers
Business Consumers
Suppliers and Distributors
The InternetworkedEnterprise
The Role of ExtranetsThe Role of ExtranetsConnecting Enterprise to Consumers, Connecting Enterprise to Consumers, Business Customers, Suppliers, and Business Customers, Suppliers, and Other Business PartnersOther Business Partners
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-17
Real World Cases
The Role of ExtranetsThe Role of Extranets
• Platinum Lender Access Extranet Created by Countrywide• Access to Account and
Transaction Information• Snap-on Created Franchise
Information Network for Their Independent Dealers• Supports Interactive News and
Information Exchange
Countrywide and SnapCountrywide and Snap--on: on: Extranet ExamplesExtranet Examples
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-18
Real World Cases
Telecommunications Telecommunications Network AlternativesNetwork Alternatives
• GPS Use by Trucking and Cement Firms• “Time-Definite-Delivery”• Omni TRACKS System• Better Management of Time-
Sensitive MaterialsReal World Real World Case 2Case 2--ConCon--Way NOW and Trimble Way NOW and Trimble
Navigation: The Business Navigation: The Business Value of GPS NetworksValue of GPS Networks Click to go to
Case 2
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-19
Real World Cases
Key Components and Alternatives•Networks•Media• Processors• Software•Channels•Topology/Architecture
Telecommunications Telecommunications Network AlternativesNetwork Alternatives
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-20
Real World Cases
A Telecommunications A Telecommunications Network ModelNetwork Model
Telecommunications Telecommunications Network AlternativesNetwork Alternatives
PCs, NCs, andOther Terminals
TelecommunicationsProcessors
TelecommunicationsChannels
TelecommunicationsProcessors
TelecommunicationsSoftware
Computers
11
2233
22
44
55
6
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-21
Real World Cases
Types of Telecommunications Types of Telecommunications NetworksNetworks
Telecommunications Telecommunications Network AlternativesNetwork Alternatives
•Wide Area Networks (WANs)•Local Area Networks (LANs)•Network Server•Network Operation System•Virtual Private Network (VPNs) GraphicallyGraphically…… END
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-22
Real World Cases
Example Wide Area NetworkExample Wide Area Network
Telecommunications Telecommunications Network AlternativesNetwork Alternatives
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-23
Real World Cases
Example Local Area NetworkExample Local Area Network
Telecommunications Telecommunications Network AlternativesNetwork Alternatives
PC Workstation PC Workstation PC Workstation
PC Workstation PC Workstation PC Workstation
Shared Printer
Shared Databasesand Software Packages
Internetwork Processorto Other Processors
NetworkServer
Shared HardDisk Unit
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-24
Real World Cases
Example Virtual Private NetworkExample Virtual Private Network
Telecommunications Telecommunications Network AlternativesNetwork Alternatives
IntranetServer
Router
Intranet
Company ACompany A
Company BCompany B
IntranetIntranetServer
ExtranetServer
Router
NetworkFirewall
NetworkFirewall
Extranet
TheTheInternetInternet
7
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-25
Real World Cases
Link Staffing Case: Challenges Link Staffing Case: Challenges of VPN Servicesof VPN Services
Telecommunications Telecommunications Network AlternativesNetwork Alternatives
•Connecting 49 Branches in 29 States by a VPN•Outsourced Network to OpenReach•Previous Problems with Another Provider•New Provider Quite Successful END
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-26
Real World Cases
Client/Server NetworksClient/Server NetworksFunctions of the Computer SystemsFunctions of the Computer Systems
Client Systems Servers
MainframeLarge Servers
•• Functions:Functions:Provide user interface, perform some/most processing on an application.
•• Functions:Functions:Shared computation, application control, distributed databases.
•• Functions:Functions: Central database control, security, directory management, heavy-duty processing.
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-27
Real World Cases
Other NetworkingOther Networking• Client/Server Networks–Clients–Servers–Downsizing–Legacy Systems
• Network Computing• Peer-to-Peer Networks
(P2P) ENDBACK NEXT
The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-28
Real World Cases
Other NetworkingOther Networking
A peer-to-peer network architecture with aDirectory of all peers on a central server
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-29
Real World Cases
Other NetworkingOther Networking
A pure peer-to-peer network architecture with no central directory server
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-30
Real World Cases
Telecommunications MediaTelecommunications MediaTwisted-Pair WireCoaxial CableFiber Optics• Photons• Dense Wave Division
Multiplexing (DWDM)Wireless Technologies• Terrestrial Microwave• Communications Satellites
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-31
Real World Cases
Telecommunications MediaTelecommunications Media
• Network Connecting 459 Restaurants and 6 Plants• Used VSAT Satellite
Communications Network• Faster Credit Card
Authorizations• Automatic Overnight Polling of
Financial Data from POS Terminals• Planning Inventory Management
Application
Bob Evans Farms Case: The Bob Evans Farms Case: The Case for Satellite NetworksCase for Satellite Networks
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-32
Real World Cases
Telecommunications MediaTelecommunications MediaCellular and PCS SystemsWireless LANsThe Wireless Web• Very Thin-Clients• Wireless Application
Protocol (WAP)• Third Generation (3G)
Wireless Technologies• Wireless Markup
Language (WML)
9
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-33
Real World Cases
Telecommunications MediaTelecommunications Media
WebServer
HTMLor
XML
WMLFilter Proxy
WirelessAccess
Protocol
Wireless Application Protocol Wireless Application Protocol (WAP) Architecture for (WAP) Architecture for Wireless Internet ServiceWireless Internet Service
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-34
Real World Cases
Telecommunications MediaTelecommunications Media
• Use of Wireless as Part of UPScan Standardization Effort• Use of Bluetooth for Cordless
Connection to Peripherals• Developed Legacy Application
Programming Interfaces (API)• Connected to Web for New
Customer Tracking Ability
The UPS Case: Wireless LANs The UPS Case: Wireless LANs and Mand M--CommerceCommerce
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-35
Real World Cases
Telecommunications Telecommunications ProcessorsProcessors
•Modems–Modulation–Demodulation•Multiplexers• Internetwork Processors–Switches–Routers–Hubs–Gateways END
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-36
Real World Cases
Telecommunications Telecommunications ProcessorsProcessors
Corporate Local Area Network Internet Provider
Internet Backbone Internet Provider Private HomeModem
Typical Internet ConnectionTypical Internet ConnectionNetwork Interface Card
NIC
NIC
HubEthernetSwitch Router
FrameRelay
Switch Router
ATMSwitch
CoreRouter ATM
SwitchRouter
FrameRelay
Switch
RemoteAccessDevice
10
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-37
Real World Cases
Telecommunications Telecommunications ProcessorsProcessors
Comparing Connecting TechnologyComparing Connecting Technology
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-38
Real World Cases
Telecommunications Telecommunications SoftwareSoftware
•Network Operating Systems•Network Management–Traffic Management–Security–Network Monitoring–Capacity Planning
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-39
Real World Cases
Network Management SoftwareNetwork Management Software
Telecommunications Telecommunications SoftwareSoftware
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-40
Real World Cases
Nielsen Media Research and Others: Nielsen Media Research and Others: Network Bandwidth Management Network Bandwidth Management ChallengesChallenges
Telecommunications Telecommunications SoftwareSoftware
• Sharing Resources Increases Bandwidth Requirements• Need Clear Idea of Actual
Bandwidth Needs• Gaming, Audio and Video
Downloads Are Large Users• Analysis of Use Adds to Network
Efficiency
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-41
Real World Cases
Network TopologiesNetwork Topologies• Topologies or Network
Structures• Star• Ring• Bus• Mesh• Client/Server May Use
Any Combination ENDBACK NEXT
The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-42
Real World Cases
Network TopologiesNetwork TopologiesGraphical Topology Examples Graphical Topology Examples
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KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-43
Real World Cases
Network Architecture Network Architecture and Protocolsand Protocols
• International Standards Organization (ISO)• The Seven-Layer Open
Systems Interconnection (OSI) Model• Five-Layer Transmission
Control Protocol/Internet Protocol (TCP/IP)• OSI and TCP/IP Are Related
to One Another… ENDBACK NEXT
The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-44
Real World Cases
Network Architecture Network Architecture and Protocolsand Protocols
TCP/IPTCP/IPThe OSIThe OSIModelModel
• Provides communications services for end user applications
• Provides appropriate data transmission formats and codes
• Supports the accomplishment of telecommunications sessions
• Supports the organization and transfer of data between nodes in the network
• Provides appropriate routing by establishing connections among network links
• Supports error-free organization and transmission of data in the network
• Provides physical transmission of data on the telecommunications media in the network
PhysicalLayer
Data LinkLayer
ApplicationLayer
NetworkLayer
TransportLayer
PresentationLayer
SessionLayer
Application orProcess Layer
Host-to-Host Transport Layer
Internet Protocol (IP)
Network Interface
Physical Layer
12
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KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-45
Real World Cases
Bandwidth AlternativesBandwidth Alternatives•Narrow Band•Medium Band• Broadband• Switching Alternatives
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-46
Real World Cases
Bandwidth AlternativesBandwidth Alternatives• Packet Switching Technology• Cell Switching Technology• Choices Made by Firms
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The Networked EnterpriseTrends in Telecommunica-tionsThe Internet RevolutionBusiness Use of the InternetSection IITelecommunica-tionsAlternativesTelecommunica-tions ModelNetwork TopologiesBandwidth Alternatives
KEY TERMS
Copyright 2005, McGraw-Hill/Irwin, Inc. 6-47
Real World Cases
SummarySummary•Telecommunications Trends•The Internet Revolution•The Business Value of the Internet•The Role of Intranets•The Role of Extranets•Telecommunications Networks•Network Alternatives
