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Dan Gulliford Vice President Advance Technology Broadband Wireless World Forum February 19, 2001

Crossfire: Deploying the Optimal Configuration -- Point to Multipoint vs Consecutive Point vs Mesh. Dan Gulliford Vice President Advance Technology Broadband Wireless World Forum February 19, 2001. Point-to-Point Technology. 155 Mbps being deployed today Limited scalability

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Dan Gulliford Vice President Advance Technology Broadband Wireless World Forum February 19, 2001

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  1. Crossfire: Deploying the Optimal Configuration -- Point to Multipoint vs Consecutive Point vs Mesh Dan Gulliford Vice President Advance Technology Broadband Wireless World Forum February 19, 2001

  2. Point-to-Point Technology • 155 Mbps being deployed today • Limited scalability • Redundancy, but not alternate routing • Line of sight issues Financial Building Network Interconnect Point-Of-Presence (POP)

  3. Point-to-Multipoint Technology POP • Typically 10 to 45 Mbps per building • Capacity declines as subscribers are added • No alternative routing or redundancy • Line of site and frequency reuse issues • Best suited to low- to medium scale BW needs Financial Building Bank City Hall Trade Center University

  4. Consecutive Point Network - Ring/Mesh Networks • Ideal CPN uses radios designed specifically for ring/mesh deployment • Totally transparent to voice, video, and data applications • Radios work with standard network equipment to provide total CPN solution Bank Gateway POP Financial Building Trade Center University City Hall

  5. POP Consecutive Point Networks Dense deployments POP Create self-healing, route-diverse networks Minimize frequency interference

  6. Consecutive Point Networks • Scaleable & Flexible: Build to customer demand, matching revenue generation with network investment outlay • Reliable & Available: Dual route (path) diverse links to customers • Backhaul to backbone network inherent in architecture (minimizes backhaul issue and cost) • Simpler RF planning: Easier adaptation as network grows in size and density (grow and evolve to mesh) • High spectrum efficiency: One 50 MHz channel pair gives greatest, most flexible, and highest bandwidth density per customer • Dense network deployment because of efficient RF spectrum management of co-channel interference • Uses state-of-the-art standard network equipment--fully future proof --Best choice for medium to high capacity BW needs

  7. Consecutive Point and Mesh Topology • Mesh network advantages: • High survivability • Support heterogeneous and dynamic traffic patterns • Consecutive Point is a minimal form of mesh (n[the # of conections per node] = 2), which provides full redundancy • Consecutive Point can readily be expanded to complex mesh, if needed: • Economic justification of extra links: • Additional capacity? • Additional reliability? --Typically ROI diminishes rapidly as n increases beyond two

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