Chap06 -- modified.ppt

8/19/2019 Chap06 -- modified.ppt

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6 - 1Copyright © 2006, The McGraw-Hill Companies, Inc. All rights resere!.

1. Identify several major developments andtrends in the industries, technologies

and business applications of

telecommunications and Internettechnologies.

2. Provide examples of the business valueof Internet, intranet, and extranet

applications.

Learning Objectives

Learning Objectives


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Learning Objectives

Learning Objectives

. Identify the basic components,functions, and types of

telecommunications net!or"s used in

business.

#. $xplain the functions of major types of

telecommunications net!or" hard!are,soft!are, media, and services.


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%hy &tudy 'et!or"ing(

%hy &tudy 'et!or"ing(

) %hen computers are net!or"ed, t!oindustries * computing and

communications * converge, and the

result is vastly more than the sum of theparts.

) &uddenly, computing applications becomeavailable for business+to+business

coordination and commerce, and for small

as !ell as large organiations.


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-ase 1/ %ireless 0usiness pplications


Business Value of Wireless:) ime is money. Poc"et P-s help reduce

travel time at -elanese -hemicals relatedto plant e3uipment diagnosis.

) 4idelity Investments attracts customers byoffering services via !ireless devices.

) 56 uses !ireless devices to improvefor"lift operator productivity and cut costs.


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1. %hat is the business value of !irelesstechnologies in the chemicals and automotive

manufacturing industries( %hat other

manufacturing applications might benefit from

!ireless technologies( %hy(

2. %hat are some of the business benefits of

!ireless technologies in finance andinvestments( %hat other applications !ould

you recommend( %hy( -hec" the !ebsite

of 4idelity.com to help you ans!er.


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. %hat are some of the business benefits andchallenges of using !ireless technologies in

retailing( %hat are some other applications

that might be beneficial to consumers, as !ell

as retailers( %hy(

#. %hat are some of the major challenges

limiting the !idespread use of !irelesstechnologies in many business applications(

%hat can be done to meet such challenges(


7/576 - 7Copyright © 2006, The McGraw-Hill Companies, Inc. All rights resere!.

elecommunicationselecommunications

7efinition/) he exchange of information in any form

8voice, data, text, images, audio, video9

over net!or"s



Open &ystemsOpen &ystems

7efinition/) Information systems that use common

standards for hard!are, soft!are,

applications, and net!or"ing



-onnectivity-onnectivity

7efinition/) he ability of net!or"ed computers and

other devices to easily access and

communicate !ith each other and shareinformation



InteroperabilityInteroperability

7efinition/) he ability of an open system to enable

the many different applications of end

users to be accomplished using thedifferent varieties of computer systems,

soft!are pac"ages, and databases

provided by a variety of interconnectednet!or"s



7igital 'et!or" echnologies7igital 'et!or" echnologies

7efinition/) 7igital transmission technologies that transmit

information in the form of discrete pulses

0enefits/

) :igher transmission speeds

) 6ovement of larger amounts of information

) 5reater economy

) Lo!er error rates



0usiness ;alue of elecommunications0usiness ;alue of elecommunications



InternetInternet

7efinition/) net!or" made up of millions of smaller

private net!or"s each !ith the ability to

operate independent of, or in harmony!ith, all the other millions of net!or"s

connected to the Internet



Internet pplicationsInternet pplications



0usiness



0usiness ;alue of the Internet0usiness ;alue of the Internet



IntranetIntranet

7efinition/ net!or" inside an organiation that

uses Internet technologies to provide an

Internet+li"e environment !ithin theenterprise for information sharing,

communications, collaboration, and the

support of business processes



0usiness ;alue of Intranets0usiness ;alue of Intranets

) -ommunications and -ollaboration * includesemail, voicemail, paging, faxes, and group!are

) %eb Publishing * easy, attractive and lo!+cost

!ay of publishing and accessing multimediabusiness information

) 0usiness Operations and 6anagement *platform for developing and deploying criticalbusiness applications to support businessoperations and managerial decision ma"ingacross the inter+net!or"ed enterprise



0usiness ;alue of Intranets0usiness ;alue of Intranets



$xtranet$xtranet

7efinition/) 'et!or" lin"s that use Internet

technologies to interconnect the intranet

of a business !ith the intranets of itscustomers, suppliers, or other business

partners


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0usiness ;alue of $xtranets0usiness ;alue of $xtranets


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-ase 2/ &erving -itiens !ithout %ires-ase 2/ &erving -itiens !ithout %ires

MEMA Tecnolo!ies:) 5lobal+positioning satellite

communications

) -ellular phones) 5eospatial technologies

) 6icroelectronics technologies


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"ea#ures:) device to communicate !arnings to

properly position individuals before an

event happens

) tool to collect timely information after a

disaster hits


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1. %hat is the business value of advancedmobile technologies to 6aryland=s emergency

management services(

2. In !hat other government services could 5P&

serve to provide business value( 5ive some

examples.

. re there disadvantages or ris"s associated

!ith the deployment of 5P& systems to

monitor the location of people( $xplain.


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#. %hat is the business value of thevarious applications of 5P& satellite

net!or"s beyond those discussed in the

case( -hec" out the !ebsites ofsatellite services providers li"e :ughes

'et!or" &ystems 8!!!.hns.com9 or 5+

-om International 8!!!.g+com.com9 to

help you ans!er.

http://www.hns.com/http://www.g-com.com/http://www.g-com.com/http://www.hns.com/


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elecommunications 'et!or" -omponentselecommunications 'et!or" -omponents

)erminals * any input>output device that usestelecommunications net!or"s to transmit or receive data

) elecommunications Processors * devices that performcontrol and support functions

) elecommunications -hannels * media over !hich dataare transmitted and received

) -omputers * all sies and types

) elecommunications -ontrol &oft!are * programs thatcontrol telecommunications activities


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elecommunications 'et!or" -omponentselecommunications 'et!or" -omponents


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ypes of elecommunications 'et!or"sypes of elecommunications 'et!or"s

) %ide rea 'et!or" 8%'9 * net!or" thatcovers a large geographic area

) Local rea 'et!or" 8L'9 * net!or" connecting

information processing devices !ithin a limitedphysical area

) ;irtual Private 'et!or" 8;P'9 * secure net!or"

that uses the Internet as its main bac"bonenet!or", but relies on net!or" fire!alls,encryption, and other security features of itsInternet and intranet connections and those ofparticipating organiations


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L' ? ;P'L' ? ;P'


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ypes of elecommunications 'et!or"sypes of elecommunications 'et!or"s

) -lient>&erver * P-s and !or"stations, calledclients are interconnected by local areanet!or"s and share application processing !ithnet!or" servers

) 'et!or" -omputing * hin clients provide abro!ser+based user interface for processingsmall application programs

) Peer+to+Peer * file+sharing soft!are connectseach P- to a central server or to another onlineuser=s P-


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-lient>&erver -lient>&erver


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-lient>&erver ? 'et!or" -omputing-lient>&erver ? 'et!or" -omputing


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Peer+to+Peer Peer+to+Peer


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Peer+to+Peer Peer+to+Peer


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elecommunications 6ediaelecommunications 6edia

) !isted+Pair %ire * copper !ire t!istedinto pairs

) -oaxial -able * sturdy copper oraluminum !ire !rapped !ith spacers toinsulate and protect it

) 4iber Optics * one or more hair+thinfilaments of glass fiber !rapped in aprotective jac"et


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elecommunications 6ediaelecommunications 6edia


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%ireless echnologies%ireless echnologies

) errestrial 6icro!ave * earthboundmicro!ave systems that transmit high+

speed radio signals in a line+of+sight path

bet!een relay stations spaced

approximately @ miles apart

) -ommunications &atellites + high+earthorbit communications satellites placed in

stationary geosynchronous orbits


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%ireless echnologies%ireless echnologies

) -ellular and P-& &ystems * a geographic areadivided into cells !ith one lo!+po!er transmitter

device per cell used to relay calls from one cell

to another

) %ireless L's *high+ or lo!+fre3uency radio

technology installed in an office or building

) %ireless %eb * !ireless, %eb+enabled

information appliances accessing the Internet,

intranets and extranets


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elecommunications Processorselecommunications Processors

) 6odems * convert digital signals from acomputer into analog fre3uencies that can

be transmitted over ordinary telephone

lines

) 6ultiplexers * allo!s a single

communications channel to carrysimultaneous data transmissions from

many terminals


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elecommunications echnologieselecommunications echnologies


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Internet!or" ProcessorsInternet!or" Processors

) &!itch * ma"es connections bet!eentelecommunications circuits in a net!or"

) Aouter * intelligent communications processor

that interconnects net!or"s based on differentprotocols

) :ub * a port s!itching communications

processor

) 5ate!ay * connects net!or"s using differentcommunications architectures


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'et!or" 6anagement'et!or" 6anagement

) raffic 6anagement * manage net!or"resources and traffic to avoid congestion

and optimie telecommunications service

levels to users

) &ecurity * provide authentication,

encryption, fire!all, auditing andenforcement


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'et!or" 6anagement'et!or" 6anagement

) 'et!or" 6onitoring * troubleshoot and!atch over the net!or", informing net!or"

administrators of potential problems

before they occur

) -apacity Planning * survey net!or"

resources and traffic patterns and users=needs to determine ho! best to

accommodate the needs of the net!or"

as it gro!s and changes


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'et!or" opologies'et!or" opologies

) &tar * ties end user computers to acentral computer

) Aing * ties local computer processorstogether in a ring on a relatively e3ual

basis

) 0us * local processors share the same

communications channel


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'et!or" rchitectures ? Protocols'et!or" rchitectures ? Protocols

) Protocol * standard set of rules and proceduresfor the control of communications in a net!or"

) 'et!or" rchitecture * the use of standard

protocols, standard communications hard!areand soft!are interfaces and the design of a

standard multilevel interface bet!een end users

and computer systems !ith the goal of

promoting an open, simple, flexible, and efficient

telecommunications environment


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O&I ? -P>IP 6odelsO&I ? -P>IP 6odels

) Open &ystems Interconnection 8O&I9 +model is a seven+layer model that serves

as a standard model for net!or"

architectures

) ransmission -ontrol Protocol > Internet

Protocol 8-P>IP9 * is a five layertelecommunications protocol used by the

Internet


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0and!idth0and!idth

7efinition/) -lassification of communications speed

and capacity of telecommunications

net!or"s

ransmission Aates/

) 'arro!+band * lo!+speed) 0roadband * high+speed


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ransmission &peedsransmission &peeds


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&!itching lternatives&!itching lternatives

) -ircuit &!itching * a s!itch opens acircuit to establish a lin" bet!een a

sender and receiverB it remains open until

the communication session is completed

) 6essage &!itching * a message is

transmitted a bloc" at a time from ones!itching device to another


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-ase / %i+4i 'et!or"s-ase / %i+4i 'et!or"s

$allen!es:) :it+or+miss hotspots

) Lost productivity due to disruptions

) 6ust create billing systems) 6ust establish technical standards

) 6ust develop tighter security measures

-


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-ase / %i+4i 'et!or"s-ase / %i+4i 'et!or"s

1. %hat are the business benefits of %i+4inet!or"s(

2. %hat are some of the problems faced by

companies !ho are using %i+4i net!or"s(%hat are some solutions to those problems(

. %hat are some other business uses for %i+4inet!or"s not mentioned in this case( %hat

are their business benefits and challenges(

- # ; i O IP


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-ase #/ ;oice Over IP-ase #/ ;oice Over IP

%er&ices:) -ombine email !ith voicemail

) udio+conferencing

) -ollaboration technologies) ;ideo

- # ; i O IP

- # ; i O IP


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Benefi#s:) Install one line to carry voice and data

) Aeduced staff training

) Improved productivity

- # ; i O IP

- # ; i O IP


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1. %hat are the main benefits that can be gainedby companies that s!itch to ;oIP systems(

2. %hat are some of the major cost factors that

may limit a positive rate of return frominvestments in ;oIP projects(

. &hould more companies s!itch to ;oIPsystems( ;isit the !ebsites of vaya and

-isco &ystems to vie! their ;oIP ne!s,

products, and services to help you ans!er.

&

&


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&ummary&ummary

)Organiations are becoming net!or"edenterprises that use the Internet, intranets, and

other telecommunications net!or"s to support

business operations and collaboration !ithin the

enterprise, and !ith their customers, suppliers,and other business partners.

) elecommunications technology is moving

to!ard open, inter+net!or"ed digital net!or"s

for voice, data, video and multimedia.

&

&


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&ummary&ummary

)Open systems !ith unrestricted connectivityusing Internet technologies are the primarytelecommunications technology drivers in e+business systems.

) -ompanies are deriving strategic businessvalue from the Internet, !hich enables them todisseminate information globally, communicateand trade interactively !ith customied

information and services for individualcustomers, and foster collaboration of peopleand integration of business processes !ithin theenterprise and !ith business partners.


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