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Executive b areCOMPUTERWORLDINTRODUCTION both Roads Lead to IP .................................2TRENDS &STRATEGIESWading Into IP Telephony ..........................4 get ROI From VoIP ..............................7VoIP Monitoring Tools ............................10VoIP Security .......................................13Call Centers and IP ................................15 enunciate Over radiocommunication LANs .......................18RESOURCESQuickStudySession Initiation Protocol ......21Emerging engineering..........................23IP VideoconferencingIPcommunicationsVoice-over-IP is ever-changing the focal point wethink of,and manage,communications.Compliments ofComputerworld Executive air IP Communications 2Converged IP intercommunicates allow fora vast re overbolding of in the buff applicationsto ride on the network and interact,including IP telephony,audioconfer-encing, moving-picture showconferencing,unified put across and presence technolo-gies (like chat).acqu iring StartedCorporate America is that starting take down the road to instance-over-IP(VoIP)communications,though both analyst says its just a exitof time onwards it becomes main-stream.By 2009,the installed baseof IP communicationsequipment provide overcome the enterprise land-scape,but thats still a few old ageaway,says Robert Rosenberg,presi- crack of Insight interrogation Corp.inBoonton,N.J.There ar several causal agents whyVoIP hasnt been an overnight suc-cess.Companies started scrutiny thewaters of VoIP in 2001,but therewere serious concerns ab forbidden theatrical role earpiece quality that slowed the mo-mentum (those concerns have beenlargely resolved).Moreover,one ofthe samara reasons for implementingVoIP was to reduce the long-distancecharges associated with the tradi-tional phone networks,yet thosecharges have dropped so low thatthose hail savings are less dramatic.The terms of IP phones is anotherreason for the slow pace.The costof going VoIP is certainly a factorhere,since the price of newer IPphones entrusting continue to be or so25%higher(prenominal) than the traditionalal-ternative,Rosenberg says.VoIP neer was and never will bethe least expensive way to deliver vocalism to the enterprise,but the al-lure of VoIPs rich applications likevideo telephony will slowly convertlegacy customers,he adds.Indeed,there are a variety of rea-sons for moving to a converged IPnetwork.Users report benefits suchas the sidelineMuch lower be for audiocon-ferencing.The ease of moving,addingand changing phones.The fact that the IT cater canmanage a single network infrastruc-ture out of the selective information center,instead oftwo or to a greater extent very contrasting networks.Thumbs Up untimely users are giving a thumbs upto converged networks,saying their engine room choices have relieve mon-ey and made their voice communi-cations setups more flexible.Someimplement comminuted VoIP systems,whileothers rely on a hybrid of IP and cir-cuit-s witched technologies.Eitherway,the users say theyre realizinggreater efficiencies just by startingto merge their voice and info net-works.IBM,for example,is rolling out aglobal VoIP network over the conterminousfive years thats expected to cutvoice/ data communications costs by25%,according to Fred Spuleck,di-rector of global voice infrastructureat IBM.One efficiency will comefrom lowering the soma of IBMs snobby branch exchange (PBX)switches from the current count of about 900 to just 11 IP-based PBXs,Spuleck says.Pure VoIP supporters say theirsystems are more merry and canmore easily support video or voiceconferencing as easily as new data ap-plications.For example,IBMs newVoIP network will allow easy cre-ation of an audioconferencing sys-SR essays research papers ExecutiveBulletinCOMPUTERWORLDINTRODUCTIONAll Roads Lead to IP .................................2TRENDS &STRATEGIESWading Into IP Telephony ..........................4Getting ROI From VoIP ....................... .......7VoIP Monitoring Tools ............................10VoIP Security .......................................13Call Centers and IP ................................15Voice Over Wireless LANs .......................18RESOURCESQuickStudySession Initiation Protocol ......21Emerging Technology..........................23IP VideoconferencingIPCommunicationsVoice-over-IP is changing the way wethink of,and manage,communications.Compliments ofComputerworld Executive Bulletin IP Communications 2Converged IP networks allow fora wide variety of new applicationsto ride on the network and interact,including IP telephony,audioconfer-encing,videoconferencing,unifiedmessaging and presence technolo-gies (like chat).Getting StartedCorporate America is just startingdown the road to voice-over-IP(VoIP)communications,thoughevery analyst says its just a matterof time before it becomes main-stream.By 2009,the installed baseof IP communicationsequipmentwill dominate the enterprise land-scape,but thats s till a few yearsaway,says Robert Rosenberg,presi-dent of Insight Research Corp.inBoonton,N.J.There are several reasons whyVoIP hasnt been an overnight suc-cess.Companies started testing thewaters of VoIP in 2001,but therewere serious concerns about voicesound quality that slowed the mo-mentum (those concerns have beenlargely resolved).Moreover,one ofthe key reasons for implementingVoIP was to reduce the long-distancecharges associated with the tradi-tional phone networks,yet thosecharges have dropped so low thatthose cost savings are less dramatic.The cost of IP phones is anotherreason for the slow pace.The costof going VoIP is certainly a factorhere,since the price of newer IPphones will continue to be about25%higher than the traditionalal-ternative,Rosenberg says.VoIP never was and never will bethe least expensive way to delivervoice to the enterprise,but the al-lure of VoIPs rich applications likevideo telephony will slowly convertlegacy customers,he adds.Indeed,there are a varie ty of rea-sons for moving to a converged IPnetwork.Users report benefits suchas the followingMuch lower costs for audiocon-ferencing.The ease of moving,addingand changing phones.The fact that the IT staff canmanage a single network infrastruc-ture out of the data center,instead oftwo or more very different networks.Thumbs UpEarly users are giving a thumbs upto converged networks,saying theirtechnology choices have saved mon-ey and made their voice communi-cations setups more flexible.Someimplement pure VoIP systems,whileothers rely on a hybrid of IP and cir-cuit-switched technologies.Eitherway,the users say theyre realizinggreater efficiencies just by startingto merge their voice and data net-works.IBM,for example,is rolling out aglobal VoIP network over the nextfive years thats expected to cutvoice/data communications costs by25%,according to Fred Spuleck,di-rector of global voice infrastructureat IBM.One efficiency will comefrom lowering the number of IBMsprivate branch exchange ( PBX)switches from the current count ofabout 900 to just 11 IP-based PBXs,Spuleck says.Pure VoIP supporters say theirsystems are more resilient and canmore easily support video or voiceconferencing as well as new data ap-plications.For example,IBMs newVoIP network will allow easy cre-ation of an audioconferencing sys-