2. 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

3. © 2000 Triton Network Systems, Inc. All Rights Reserved. Confidential and Proprietary. Network Interconnect Point-Of-Presence (POP) Financial Building Point-to-Point Technology  155 Mbps being deployed today  Limited scalability  Redundancy, but not alternate routing  Line of sight issues

4. © 2000 Triton Network Systems, Inc. All Rights Reserved. Confidential and Proprietary. Financial Building University City HallTrade Center Bank POP Point-to-Multipoint Technology n Typically 10 to 45 Mbps per building n Capacity declines as subscribers are added n No alternative routing or redundancy n Line of site and frequency reuse issues n Best suited to low- to medium scale BW needs

5. © 2000 Triton Network Systems, Inc. All Rights Reserved. Confidential and Proprietary. Consecutive Point Network - Ring/Mesh Networks POP 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 Financial Building UniversityCity Hall Trade Center Bank Gateway

6. © 2000 Triton Network Systems, Inc. All Rights Reserved. Confidential and Proprietary.POP Create self-healing, route-diverse networks Dense deployments Minimize frequency interference POP Consecutive Point Networks

7. © 2000 Triton Network Systems, Inc. All Rights Reserved. Confidential and Proprietary. Consecutive Point Networks n Scaleable & Flexible: Build to customer demand, matching revenue generation with network investment outlay n Reliable & Available: Dual route (path) diverse links to customers n Backhaul to backbone network inherent in architecture (minimizes backhaul issue and cost) n Simpler RF planning: Easier adaptation as network grows in size and density (grow and evolve to mesh) n High spectrum efficiency: One 50 MHz channel pair gives greatest, most flexible, and highest bandwidth density per customer n Dense network deployment because of efficient RF spectrum management of co-channel interference n Uses state-of-the-art standard network equipment--fully future proof --Best choice for medium to high capacity BW needs

8. © 2000 Triton Network Systems, Inc. All Rights Reserved. Confidential and Proprietary. Consecutive Point and Mesh Topology n Mesh network advantages:  High survivability  Support heterogeneous and dynamic traffic patterns n 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