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ATM can provide this capability because it handles call setups on the fly. When a switch receives a cell, it checks the destination address and sets up a dedicated path through the network. These connections can either be switched virtual circuits, where the connection is set up and torn down after every transmission, or permanent virtual circuits, where a fixed logical channel between two nodes is defined once and maintained each time those nodes communicate.

New, high-powered applications have raised the question of whether ATM will have a significant impact on existing network operating systems (NOS), as well. According to McClimans, there will be two waves of ATM winners in regards to that issue. The Elsa Peretti Teardrop Earrings ATM providers will be the major networking players who have huge installed bases, which will force them to keep most of their NOSes intact to keep disruption and change to a minimum.

In about two years, however, new players will emerge who have no allegiance to any users because they have no installed base to protect. "There is the potential for a very different winner who has the luxury to look at the technology, architecture and applications and rework the NOS to take advantage of this new high-performance switching system that is not broadcast-oriented like we have in place today," McClimans says. "Heavyweights such as Microsoft Corp. are hinting that they are going to do those things, but they have these massive installed legacy bases to deal with, so they can't be radical in the near future."

Even if these ATM-oriented applications surface, the percentage Paloma's Zellige drop earrings the market that will make use of them is pretty small, McClimans added."There is only about 10% to 15% of the market that will ever need the power of ATM down to the desktop," he said.MPACT ON PERFORMANCEA physical infrastructure that has been altered far ATM and a new class of applications that are bandwidth-hungry begs the obvious question of network performance: Once the LAN has been outfitted for ATM, how will it perform?

Unfortunately for users, this question cannot be answered. While proposed rates for ATM range from 25M to 622M bit/sec, no one is sure what strains that level of performance will put on the LAN.The reason for the uncertainty regarding performance is related to the amount of questions that still remain to be answered. "Issues of congestion and blocking, for example, are still on the table," Robbins says. "These are the critical technical issues that are a little esoteric but could kill the networks once ATM gets out of pilot phase and into real production."Yet everyone agrees that the performance ATM can bring to the whole infrastructure Elsa Peretti Teardrop drop earrings architecture will significantly change the way users think about their business.

"The technology is still in a stage where we don't fully understand what the potential can be in terms of the whole network landscape," Yankee Group's Shuler says. "Today, we design, build and architect networks with bounds, constraints and caps in mind, Paloma's Zellige earrings prohibit innovation, application development and business reengineering. While ATM promises to remove those barriers, we just don't know what will ultimately happen."

Because no one is quite sure how ATM will affect the network or react with existing network technologies, initial installations will likely run in parallel with existing nets or in small work groups attached to the periphery of a larger net.

"Given the price points that ATM has today as well as the marginal track record Atlas drop earrings have of pragmatically introducing technology from a user's perspective in a fully consumable form, ATM--by default--will be introduced in the LAN in pockets," Shuler says. "We'll first see ATM where the users will get the maximum amount of value with the minimal amount of aberrations in their operation. That's the bottom line. Users are going to go for the simplest set of options with the highest level of payback tied to them."