Is Recreational Network Traffic Hurting Your Enterprise?

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Study: Differentiated Networks More Efficient

A new study by researchers at Rensselaer Polytechnic Institute, AT&T Labs, and the University of Nevada, Reno suggests that an Internet where all traffic is treated identically would require significantly more capacity than one in which differentiated services are offered.

Findings from the study were presented June 22 at the 15th IEEE International Workshop on Quality of Service (IWQoS 2007) in Evanston, Ill. IWQoS is a premier workshop on quality of service research, featuring rigorously reviewed technical sessions and papers.

As the Internet becomes more crowded with high-bandwidth applications and content, a wide-ranging debate is taking place about the issue of “network neutrality,” which involves both economic and technical aspects. One aspect of the debate involves whether application traffic that requires performance assurances (e.g., VoIP) could be serviced differently, or what the impact would be if all traffic were to be treated in an undifferentiated manner.

“We wanted to take one piece of the overall debate and approach it quantitatively,” says principal investigator Shivkumar Kalyanaraman, professor of electrical, computer, and systems engineering at Rensselaer. “The study makes clear that there are substantial additional costs for the extra capacity required to operate networks in which all traffic is treated alike, and carrying traffic that needs to still be assured performance as specified in service level agreements (SLAs).”

Using computer models, the researchers compared the current “best-effort” approach with a tiered model that separates information into two simple classes — one for most types of information and another for applications requiring service level assurance for high-bandwidth content like video games, telemedicine, and Voice over Internet Protocol (VoIP).

The study was meant to answer one basic question, according to Kalyanaraman: “If I want to meet the needs of applications that require service level assurances, how much more capacity do I need"”

The additional capacity needed for an undifferentiated network compared to a differentiated network is referred to as the Required Extra Capacity. The study estimates that the Required Extra Capacity in even modestly loaded networks could approach 60 percent. At times of heavy demand on the network, the Required Extra Capacity in an undifferentiated network could amount to an additional 100 percent or more of the total capacity required when differentiation is permitted.

“Clearly, an undifferentiated network in this context is less efficient and more expensive,” says coauthor K.K. Ramakrishnan of AT&T Labs. “We believe understanding the real impacts of the alternative strategies is important as the debate about network architecture unfolds.”

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Help Your Small Business Get Ahead

It sure seems like your small business just can't get ahead.

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China and India Will Lead Growth in the Mobile Market by 2011

China and India will remain the world's growth engine for wireless services, accounting for 60% of the 1.2 billion predicted new mobile subscribers over the next five years, according to the inaugural report produced by Global Insight's new Telecoms Intermodal Forecasting Service.

Global Insight an economic and financial analysis and forecasting company.

The report compares the world's 20 leading developed and emerging markets between 2006 and 2011, and predicts that over the next five years, market penetration of wireless services will grow from 34.8% to 69.1% in China; and from 13.4% to 31.0% in India.

According to the report, China will also outpace the other 19 markets in terms of broadband growth, accounting for more than one-third of the 350 million-plus new broadband subscriptions anticipated over the next fiveyears. By 2011, China, with broadband revenues of more than US$19 billion and four times the subscribers, will surpass Japan as the world's second-largest broadband market. However, the United States will continue to maintain its position as the world's largest mobile and broadband market by revenues over the forecast period.

"The bulk of the revenues for the sector will still come from thedeveloped markets. Another notable conclusion is that the so-called deathof the landline has been overstated, even if traditional landline revenueswill take a massive hit," says Julian Watson, director of Global Insight Telecom Products and author of the special report, Substitution Shakes Up the Telecoms Sector.

More than US$50 billion in revenues will be lost worldwide over the forecast period due to fixed-line subscriber declines and the migration of voice traffic to mobile and VoIP (Voice over Internet Protocol) networks. A 4.5% decline is predicted in traditional fixed-line accesses as the growth in the China and India markets fail to offset the erosion of traditional accesses in markets like Japan, South Korea, and Europe; the latter of which has already seen extensive migration of accesses from fixed lines to mobile.

"Primarily as a result of substitution, the next five years will see a fundamental shift in the revenue make-up of the global telecoms industry. In these 20 markets, fixed-line's share of total telecoms revenues will collectively fall from 39% in 2006 to 21% in 2011; while by the end of 2011, mobile will account for over two-thirds of total telecoms revenues in those markets," Watson says.

"But as our research shows, disparate local regulatory, competitive, and economic conditions will mean that the pace of substitution will vary greatly across the 20 markets. Traditional telcos are seeking to offset or reduce substitution effects by moving into multimedia and convergent markets such as IP TV (Internet Protocol Television) and Fixed-to-Mobile Convergence (FMC), but this will not always be sufficient to protect and enhance their revenues," he concludes.

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Try NationVoice for Ventrilo Hosting

Ventrilo is a new-generation voice over Internet (VOIP) communications system.

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Its efficient CPU usage makes Ventrilo Servers popular for communicating during online gaming. Others appreciate its easy interface.

Choose NationVoice as your Ventrilo host. Through the use of the Ventrilo client, they are able to bring the best in PC to PC communications. Voice quality is "nothing short of amazing."

As a voice hosting company, NationVoice strives is to provide total voice solutions for individuals and companies alike. Its industry leading support team is available around the clock to meet your needs. Along with our reputation for reliability, its goal is to provide our customers with both high quality Ventrilo servers, and a performance edge which no other company can offer.

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VoIP For Business

You've heard all the buzz, and you've seen the commercials -- use your Internet broadband connection to save money on your phone service.

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Xpander's technology provides VPN (Virtual Private Networking), Web server hosted on your office network and other critical functions -- all with drastically reduced costs and unlimited free service and support.

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