1. The HighPoint Broadband Delivery System Ermanno Pietrosemoli School on Radio Use for digital and Multimedia Communications ICTP, February 2002

2. Market Review HighPointDeploymentPositioning I.P. Services e conomy Driving Forces Computing, storage, transmission costs time Connected devices Locations Transactions Applications Complexity Bandwidth Demands  ...go to infinity...go to zero...go to one! Networks... Market Review

3. HighPointDeploymentPositioning I.P. Services Acceleration of Change Time it took for these technologies to reach the 10 million customer mark after being introduced to the mass market Pager Telephone Cable TV Fax Machine VCR Cellular Phone Personal Computer CD-ROM Drive Wireless Data Services Internet (WWW) 41Years 38Years 25Years 22Years 9Years 7Years 6Years <2Years Source: USA Today, Info Tech and Pac Tel Cellular Market Review

4. HighPointDeploymentPositioning I.P. Services Global Deregulation & Privatization  Telecom privatizations lead to increased investment in modern equipment  Deregulation and Liberalization of telephone companies occurring worldwide  State owned telcos privatizing  Competition being encouraged  Frequency Allocation  Worldwide at 2.5 GHz and 3.5 GHz  3.5 Emerging as International Standard  Meanwhile…….Demand for increased connectivity growing…..Time to Market Critical Market Review

5. HighPointDeploymentPositioning I.P. Services  IP WAN & Internet connections in high demand  IP Platform now supports multiple data, video and voice applications:  Internet access  WAN access  Video conferencing, Video streaming  IP telephony  Value Added Services Market Review Huge potential for new service providers and managers of networks classically reliant on terrestrial infrastructure

6. Market Review HighPointDeploymentPositioning I.P. Services Broadband Local Access Demand (Lines in Millions) 0 20 40 60 80 100 120 140 '98'99'00'01'02 Broadband Narrowband Source: IDC, FDC, and Lehman Brothers Estimates Market Review

7. HighPointDeploymentPositioning I.P. Services HighPoint  Concentrator & S 2 R Technology Patent Pending F1 F3 F2 F4 A Pair B Pair 1 2 3 4 5 6 7 8 9 10 1112 13 14 15 16 17 18 19 20 21 22 HighPoint  Concentrator S 2 R  Technology allows spectral reuse of channel pairs Spectral reuse with S 2 R  Technology results in a ratio up to 11:1 for spectral efficiency. High Point

8. Market Review HighPointDeploymentPositioning I.P. Services Throughput Based on Channel Size Channel Bandwidth Downstream Throughput Upstream Throughput Aggregate Throughput 3.5 MHz 12 Mbps 5.4 Mbps 382.8 Mbps 5 MHz 17 Mbps 7.6 Mbps 541.2 Mbps 6 MHz 20 Mbps 8.75 Mbps 632.5 Mbps 7 MHz 24 Mbps 10.24 Mbps 753.3 Mbps High Point

9. Market Review HighPointDeploymentPositioning I.P. Services HighPointService Provider Architecture HighPoint  Service Provider ArchitectureTelephonyInfrastructureInternetWAN Central Office 2 Way High- Speed Data 2 Way High- Speed Data TelephonyTelephony InternetInternet VideoConferencingVideoConferencing S 2 R  Base Station RF Modem Banks Ethernet Packet Switch or ATM Switch High End Super Server Transceiver Bank Rooftop/Tower Concentrator High Point

10. Market Review HighPointDeploymentPositioning I.P. Services Modems and Switch Data within the WLL (Wireless Local Loop) to Service Full wire speed Switch IF Cabling via RG6/11 to Transceiver Bank High speed modem sector -n High speed modem sector -3 High speed modem sector -2 High speed modem sector -1 High Speed Modems 100 T Connection to NOC High Point

11. Market Review HighPointDeploymentPositioning I.P. Services Computing Environment Video Server Connect outside of the WLL 2 Way High Speed Data Server Telephony Server Internet Server Full wire speed Switch Data Within WLL Central Office High Point

12. Market Review HighPointDeploymentPositioning I.P. Services HighPoint  Subscriber Side Architecture Modem Directional Antenna Transceiver (Up/Down Converter) RF Single RF Cable One Cable with IF Signal Switch or Hub High Point 10T Full Duplex

13. Market Review HighPointDeploymentPositioning I.P. Services HighPoint BDS wireless concentrator base station High Point aesthetically pleasing flat panel antenna low profile, higher gain mesh parabolic antenna subscriber radio transceiver

14. Market Review HighPointDeploymentPositioning I.P. Services HighPoint  SuperCell Benefits Maximize ChannelMaximize ChannelCapacity InexpensiveInexpensive SimpleSimple QuickQuick Max coverage per unit cost Deployment 22 km Radius 17 Mbps Down Stream/ Sector 7.6 Mbps Up Stream/ Sector Up to 541 Mbps Aggregate Throughput (With 5MHz Channels)

15. Market Review HighPointDeploymentPositioning I.P. Services HighPoint  FocalCell Benefits Time to marketTime to market Invest for returnInvest for return SimpleSimple Excellent coverageExcellent coverage Migration pathMigration path Teledensity sensitiveTeledensity sensitive Optimal bandwidth & coverage Deployment 22 km Radius 5 mi Radius 17 Mbps Down Stream/ Sector 7.6 Mbps Up Stream/ Sector 2.1 Gbps Aggregate Throughput (With 5MHz Channels)

16. Market Review HighPointDeploymentPositioning I.P. Services HighPoint  MultiCell Benefits Efficiency through Secrotal/MulticellEfficiency through Secrotal/Multicell Endless PossibilitiesEndless Possibilities 100% reuse in adjacent cells100% reuse in adjacent cells 3 to 4 times re-use in cell3 to 4 times re-use in cell Excellent CoverageExcellent Coverage Highest Possible BandwidthHighest Possible Bandwidth Deployment 478Mbps Cell Capacity (4MHz Channels) 3,346 Mbps in 7 Cell Deployment 83.65Bit/Hz Spectral Efficiency 100% Reuse in a MultiCell Environment

17. Market Review HighPointDeploymentPositioning I.P. Services

18. Market Review HighPointDeploymentPositioning I.P. Services Product Solutions Positioning Reuse / Efficiency / Throughput HIGH MEDIUM LOW MEDIUMHIGH Customer Density Supercell 6C RuralPoP 6B Supercell 24C Multicell 6C Multicell 24C Multicell 6B Positioning

19. Market Review HighPointDeploymentPositioning I.P. Services Spike Positioning Positioning

20. Market Review HighPointDeploymentPositioning I.P. Services

21. Market Review HighPointDeploymentPositioning I.P. Services Subscriber Side Multi-Service Architecture Data, Voice & Video RFRF Transceiver Bank Transceiver IF Modem Bank IF Modem IP Switch IP Switch or Hub CO Side I.P. Services Customer Network(s) Data Services, PSTN, Internet

22. Market Review HighPointDeploymentPositioning I.P. Services RF Transceiver Bank IF Multi-Service Architecture Dedicated Internet Access Modem Bank IP Switch Internet RF Transceiver IF Modem IP Router Proxy/Firewall Switch or Hub HTTPFTPSNMP Existing Premises Equipment CO Side Subscriber Side I.P. Services

23. Market Review HighPointDeploymentPositioning I.P. Services RF Transceiver Bank IF Multi-Service Architecture LAN-to-LAN Connections Modem Bank IP Switch Remote Customer Office, Internet RF Transceiver IF Modem IP Router Proxy/Firewall VPN Gateway Switch or Hub RemotePrinting File & DatabaseServers Existing Premises Equipment CO Side Subscriber Side I.P. Services

24. Market Review HighPointDeploymentPositioning I.P. Services RF Transceiver Bank IF Multi-Service Architecture Voice-over-IP Connections Modem Bank IP Switch PSTN, Remote Office RF Transceiver IF Modem IP Router Switch or Hub VoIP Gateway PBX IP Telephone Existing Premises Equipment CO Side Subscriber Side I.P. Services

25. Market Review HighPointDeploymentPositioning I.P. Services Product Timeline Head-End SuperCell MultiCell FocalCell RuralPoP 2Q ‘00 3Q ‘004Q ‘001Q ‘012Q ‘01 6-24C 22C 6-24C 6B 6-24 Sectors 6B 4B 16QAM Return OFDM Integration Tower Mount Future Direction

26. Market Review HighPointDeploymentPositioning I.P. Services

27. Market Review HighPointDeploymentPositioning I.P. Services

28. Market Review HighPointDeploymentPositioning I.P. Services

29. Market Review HighPointDeploymentPositioning I.P. Services

30. THANK YOU !