HVAC Control in the New Millennium.pdf - HVAC.Amickracing

Building Automation, Wireless Technology and the Internetriers to carry voice and data on the backbone.Sprint is planning the Integrated On-Demand Network (ION)which is an early part of the new public network. Calculated savingscompared with its older equipment is 70% cheaper. Access lines areestimated to be 60% to 80%. Maintenance is estimated at 50% less.In the new public network, other new products will allow usersto plug in all their communications gear. Traffic from these sources isshunted to the carrier. These are more than superconcentrators. Thetechnology delivers service classes based on bit rates like most ADSL(asymmetric digital subscriber line) services. AT&T is planning anequivalent service code-named INC (Integrated Network Connect).Other companies like Xedia offer Access Point which lets carriers offerbundled services with bandwidth management over a single accessline. The new public network should allow carriers to cut costsand roll out new services more rapidly.In the new infrastructure, virtual networks will not have muchin common with their rudimentary equivalents where every connectionmust be manually configured. The new public networks willeliminate most configuration chores and run over managed backboneswhich guarantees throughput and latency for different types of traffic.Carriers will be able to add services on the fly.Intelligence will also be added in the form of directory-enabledprovisioning. Other products will become available that will delivercomplete security so that even banks will do wire transfer over publicnetworks.ReferencesBraun, Cedric R., “Wireless LAN Standard Proposal Highlights theNeed for Speed,” Wireless Systems Design, Vol. 3 Number 9, September1998, pp. 13-16.Feuerstein, Marty, and Michael Zhao, “Smart Antennas Tune in toCDMA Cellular Networks,” Wireless Systems Design, Vol. 3 No. 6,June 1998, pp. 38-40.Heywood, Peter, and Andrew Cray, “Building the Brave New World -Conventional Circuit Switching Won’t Cut it in the 21st Century,”Data Communications, Vol. 10 No. 20, October 1, 1998, pp.44-49.©2001 by The Fairmont Press, Inc. All rights reserved.