MultiBeam Smart Antenna Technology for Reduced Network Costs Broadband Wireless Forum February 18, 2001 Dan Castellano VP Operations and Manufacturing

Wireless Online Confidential2 About Wireless Online MISSION STATEMENT To enable the wireless generation by delivering the best coverage and capacity with significantly fewer sites Founded In 1995 Headquarters in Silicon Valley Facilities Texas, Israel and Latin America 85 Employees Design and manufacture of wireless infrastructure equipment Investors Charter Ventures August Capital Mayfield Fund Redleaf Venture Management Safeguard Scientifics

Wireless Online Confidential3 Wireless Online Technology Wireless Online’s smart wireless PointBeam TM platform supports broadband wireless access solutions Increasing the capacity of wireless networks by providing: Spatial Division Multiple Access - SDMA Frequency reuse Interference cancellation and spatial diversity Increased gain for larger footprint Higher data rates PointBeam equipped networks reduce the number of required cell sites Compatible with wide range of frequencies, protocols and networks

Wireless Online Confidential4 PointBeam Platform Base station Subscriber MultiBeam Scalable Plug and Play Compact Sleek design

Wireless Online Confidential5 PointBeam Product Benefits High Capacity Supports 4 times the number of users Increases data rate Superior performance over traditional configurations Improves Quality of Service (QoS) Reduces interference Reduces the number of required antennas and base stations Patented MultiBeam technology Scalable solution Grows systems gradually as usage increases Single antenna expandable to 6 beam configuration Simple installation Compact design Flat panel, 90º sector, mounts on sides of buildings

Wireless Online Confidential6 F1 4 Sector Cell 2 x Reuse F1 F2 Frequency Reuse Each Picture Represents a Single Cell Single Cell MultiBeam Cell Additional 4 x Reuse 8X

Wireless Online Confidential7 PointBeam Cell: 4 X 90 degree multibeam sectors 6 beams per 90 degrees 4 X frequency reuse 2 X reuse within a sector 4 X number of users 4 antennas required F3F4 F3 F4 F2F1 F2F1 F2F1 F3F2F1 F4F3 F2F1 F2F1 4 X 90 degree sectors 2 X frequency reuse 2 X number of users 4 antennas required F1 F2 PointBeam Cell: 4 X 90 degree multibeam sectors 6 beams per 90 degrees 4 X frequency reuse 2 X reuse within a sector 4 X number of users 4 antennas required PointBeam Cell: 4 X 90 degree sectors 2 X frequency reuse 2 X number of users 4 antennas required F1 F2 Cellular Tiling Schemes Standard Cell:

Wireless Online Confidential8 Service Cost Per Subscriber (kbps) $ $ $ $ PointBeam

Wireless Online Confidential9 Revenue Increase for SuperCell

Wireless Online Confidential10 Service Cost Per Subscriber (kbps) $ $ $ $ PointBeam $ $

Wireless Online Confidential11 Revenue Increase for MultiCell

Wireless Online Confidential12 PointBeam Benefits Increases capacity 4 times over 90 degree sector system Increases revenue 4 times over conventional networks Increases service quality due to superior RF performance and spatial filtering Maximizes return on investment Simplifies installation and upgrade Complements multiple networks and standards

Wireless Online Confidential13 Conclusion PointBeam Platform Improves Performance While Reducing Network Cost