SR :: essays research papers

Executive Bulletin COMPUTERWORLD INTRODUCTION All Roads Lead to IP .................................2 TRENDS &STRATEGIES Wading Into IP Telephony ..........................4 Getting ROI From VoIP ..............................7 VoIP Monitoring Tools ............................10 VoIP Security .......................................13 Call Centers and IP ................................15 Voice Over Wireless LANs .......................18 RESOURCES QuickStudy:Session Initiation Protocol ......21 Emerging Technology:..........................23 IP Videoconferencing IPCommunications Voice-over-IP is changing the way we think of,and manage,communications. Compliments of Computerworld Executive Bulletin IP Communications 2 Converged IP networks allow for a wide variety of new applications to ride on the network and interact, including IP telephony,audioconfer- encing,videoconferencing,unified messaging and presence technolo- gies (like chat). Getting Started Corporate America is just starting down the road to voice-over-IP (VoIP)communications,though every analyst says it ¡Ã‚ ¯s just a matter of time before it becomes main- stream. ¡Ã‚ °By 2009,the installed base of IP [communications]equipment will dominate the enterprise land- scape,but that ¡Ã‚ ¯s still a few years away, ¡Ã‚ ±says Robert Rosenberg,presi- dent of Insight Research Corp.in Boonton,N.J. There are several reasons why VoIP hasn ¡Ã‚ ¯t been an overnight suc- cess.Companies started testing the waters of VoIP in 2001,but there were serious concerns about voice sound quality that slowed the mo- mentum (those concerns have been largely resolved).Moreover,one of the key reasons for implementing VoIP was to reduce the long-distance charges associated with the tradi- tional phone networks,yet those charges have dropped so low that those cost savings are less dramatic. The cost of IP phones is another reason for the slow pace. ¡Ã‚ °The cost of going VoIP is certainly a factor here,since the price of newer IP phones will continue to be about 25%higher than the [traditional]al- ternative, ¡Ã‚ ±Rosenberg says.  ¡Ã‚ °VoIP never was and never will be the least expensive way to deliver voice to the enterprise,but the al- lure of VoIP ¡Ã‚ ¯s rich applications like video telephony will slowly convert legacy customers, ¡Ã‚ ±he adds. Indeed,there are a variety of rea- sons for moving to a converged IP network.Users report benefits such as the following:  ¡Ãƒ ¶Much lower costs for audiocon- ferencing.  ¡Ãƒ ¶The ease of moving,adding and changing phones.  ¡Ãƒ ¶The fact that the IT staff can manage a single network infrastruc- ture out of the data center,instead of two or more very different networks. Thumbs Up Early users are giving a thumbs up to converged networks,saying their technology choices have saved mon- ey and made their voice communi- cations setups more flexible.Some implement pure VoIP systems,while others rely on a hybrid of IP and cir- cuit-switched technologies.Either way,the users say they ¡Ã‚ ¯re realizing greater efficiencies just by starting to merge their voice and data net- works. IBM,for example,is rolling out a global VoIP network over the next five years that ¡Ã‚ ¯s expected to cut voice/data communications costs by 25%,according to Fred Spuleck,di- rector of global voice infrastructure at IBM.One efficiency will come from lowering the number of IBM ¡Ã‚ ¯s private branch exchange (PBX) switches from the current count of about 900 to just 11 IP-based PBXs, Spuleck says. Pure VoIP supporters say their systems are more resilient and can more easily support video or voice conferencing as well as new data ap- plications.For example,IBM ¡Ã‚ ¯s new VoIP network will allow easy cre- ation of an audioconferencing sys- SR :: essays research papers Executive Bulletin COMPUTERWORLD INTRODUCTION All Roads Lead to IP .................................2 TRENDS &STRATEGIES Wading Into IP Telephony ..........................4 Getting ROI From VoIP ..............................7 VoIP Monitoring Tools ............................10 VoIP Security .......................................13 Call Centers and IP ................................15 Voice Over Wireless LANs .......................18 RESOURCES QuickStudy:Session Initiation Protocol ......21 Emerging Technology:..........................23 IP Videoconferencing IPCommunications Voice-over-IP is changing the way we think of,and manage,communications. Compliments of Computerworld Executive Bulletin IP Communications 2 Converged IP networks allow for a wide variety of new applications to ride on the network and interact, including IP telephony,audioconfer- encing,videoconferencing,unified messaging and presence technolo- gies (like chat). Getting Started Corporate America is just starting down the road to voice-over-IP (VoIP)communications,though every analyst says it ¡Ã‚ ¯s just a matter of time before it becomes main- stream. ¡Ã‚ °By 2009,the installed base of IP [communications]equipment will dominate the enterprise land- scape,but that ¡Ã‚ ¯s still a few years away, ¡Ã‚ ±says Robert Rosenberg,presi- dent of Insight Research Corp.in Boonton,N.J. There are several reasons why VoIP hasn ¡Ã‚ ¯t been an overnight suc- cess.Companies started testing the waters of VoIP in 2001,but there were serious concerns about voice sound quality that slowed the mo- mentum (those concerns have been largely resolved).Moreover,one of the key reasons for implementing VoIP was to reduce the long-distance charges associated with the tradi- tional phone networks,yet those charges have dropped so low that those cost savings are less dramatic. The cost of IP phones is another reason for the slow pace. ¡Ã‚ °The cost of going VoIP is certainly a factor here,since the price of newer IP phones will continue to be about 25%higher than the [traditional]al- ternative, ¡Ã‚ ±Rosenberg says.  ¡Ã‚ °VoIP never was and never will be the least expensive way to deliver voice to the enterprise,but the al- lure of VoIP ¡Ã‚ ¯s rich applications like video telephony will slowly convert legacy customers, ¡Ã‚ ±he adds. Indeed,there are a variety of rea- sons for moving to a converged IP network.Users report benefits such as the following:  ¡Ãƒ ¶Much lower costs for audiocon- ferencing.  ¡Ãƒ ¶The ease of moving,adding and changing phones.  ¡Ãƒ ¶The fact that the IT staff can manage a single network infrastruc- ture out of the data center,instead of two or more very different networks. Thumbs Up Early users are giving a thumbs up to converged networks,saying their technology choices have saved mon- ey and made their voice communi- cations setups more flexible.Some implement pure VoIP systems,while others rely on a hybrid of IP and cir- cuit-switched technologies.Either way,the users say they ¡Ã‚ ¯re realizing greater efficiencies just by starting to merge their voice and data net- works. IBM,for example,is rolling out a global VoIP network over the next five years that ¡Ã‚ ¯s expected to cut voice/data communications costs by 25%,according to Fred Spuleck,di- rector of global voice infrastructure at IBM.One efficiency will come from lowering the number of IBM ¡Ã‚ ¯s private branch exchange (PBX) switches from the current count of about 900 to just 11 IP-based PBXs, Spuleck says. Pure VoIP supporters say their systems are more resilient and can more easily support video or voice conferencing as well as new data ap- plications.For example,IBM ¡Ã‚ ¯s new VoIP network will allow easy cre- ation of an audioconferencing sys-