Broadband Wireless World Forum San Francisco – February 2001

1. Broadband Wireless World Forum San Francisco – February 2001 www.airspan.com Unlocking the Broadband Residential Market – Advances in Low-Cost CPE and Installation Eric Stonestrom CEO

2. Outline • Main themes • Broadband wireless – Residential market characteristics and trends • Technology trends to address market needs • Airspan’s response • Conclusion BWWF Feb 2001 - (c) Airspan Networks Inc

3. Main themes • Broadband wireless is happening now • Combining voice AND data is the key to a successful business model • The introduction of residential broadband wireless will drive volumes up and costs down • Many systems deployed already – especially in 3.5GHz, PCS and MMDS bands BWWF Feb 2001 - (c) Airspan Networks Inc

4. Residential market characteristics and trends • Data speeds comparable to DSL • 512k today; 2Mbit/s by end 2001 • 4X year-on-year speed increases! • Distance independence from exchange • A uniform service must be delivered by the operator – significant numbers of residential subscribers live out of reach of DSL • Combined delivery of high quality voice AND high-speed data are key to success • Voice alone is not enough – operators need to offer high speed data in order to remain competitive • Data alone can rarely generate sufficient revenues to justify the business case for ANY technology • High Churn rates • Some markets churn at 2 percent per month BWWF Feb 2001 - (c) Airspan Networks Inc

5. Technology trends to address market needs • Data speeds • Wireless DSL systems available today to meet data speed requirements • Many technical developments underway to achieve future data needs • 64QAM; MIMO; OFDM; multi-carrier CDMA; etc • Distance independence from exchange • Frequency band is critical to achieving good range: LMDS is not appropriate for residential market • Below 5GHz is best compromise • Wireless DSL systems deliver! • Combined delivery of high quality voice AND high-speed data • VoIP to end customer is not the best solution for residential • But integration with VoIP networks is a clear industry trend • High churn rates • Need to be able to recover large proportion of installed equipment when subscriber churns away: Integratedexternal subscriber equipment • Very short installation/recovery time: auto configuration of subs equipment, subscriber installs BWWF Feb 2001 - (c) Airspan Networks Inc

6. Technical and Technology Aspects

7. Technology Evolution for low-cost BWA Flexible, scaleable Base Station (CT) architecture Modular CTs for Microcell applications and small-scale deployments Infrastructure Wide range of voice and data terminals • Expanded range of terminals • Lower cost • Multi-Megabit Speeds CPE ASIC technology • Soft-configuration • Higher integration • Smaller footprint • Higher Bandwidth • Higher spectral efficiency Underlying Technology TIME Speed Cost BWWF Feb 2001 - (c) Airspan Networks Inc

8. Internal Service Dependent unit Upgradeable / replaceable if service mix changes Low power Unobtrusive External Frequency dependent antenna Small, lightweight, easy to deploy Single co-ax connection CPE - Airspan’s approach This approach maximizes flexibility whilst minimizing product cost BWWF Feb 2001 - (c) Airspan Networks Inc

9. Agreement on standards can make a significant impact on technology costs - viz the (GSM/cdmaOne) mobile markets. However in the broadband wireless access market, the needs are different: Non-uniform regulation and allocation of spectrum Customers are not mobile Much proprietary development has been undertaken already Some fora are active: IEEE 802.16 (WirelessMAN) - Widest industry support today WDSL Consortium ETSI BRAN/HyperAccess …. Others Standards may evolve - but not before many systems have been deployed! Lower costs through standardization BWWF Feb 2001 - (c) Airspan Networks Inc

10. This is key to the ultimate economics of a given system: 5 x range will typically need 25 x fewer base stations to cover given area There are also 25 fewer backhaul links to be installed HOWEVER this depends on having sufficient system capacity for large range systems AND sufficient spectrum Where many small sites are deployed, INTERFERENCE is often the limiting factor In comparing the economics of various systems, it is essential to examine the detailed tradeoffs between Capacity Deployed spectral efficiency Associated costs of (e.g. backhaul, site acquisition, power) System range and performance BWWF Feb 2001 - (c) Airspan Networks Inc

11. Operational costs are in many cases highly dependent on the maturity of the product, the quality of the build and the experience of the manufacturer concerned Operating BWA equipment requires: Extremely rugged tried-and-tested designs capable of withstanding a wide range of climatic conditions A product that can be easily maintained or upgraded, with minimal downtime while upgrades are undertaken Comprehensive O&M facilities To manufacture such high performance equipment requires excellent DFM techniques, and access to high-volume production lines in order to achieve lowest-cost product. Quality and DFM (Design For Manufacture) BWWF Feb 2001 - (c) Airspan Networks Inc

12. Frequency Many different frequency bands and allocations in many different global markets No world-wide frequency standards Inevitable consequence: an architecture that restricts frequency flexibility will not achieve ultimate low-cost - insufficient manufacturing volumes Services Wide variations in service requirements and mix Mixtures of 10bT, n x POTS, leased lines, ISDN Combinations of service delivery to customers – such as voice and data Dictates need for flexible subscriber service delivery unit HOWEVER - more modularity generally leads to higher costs: therefore careful design that achieves both flexibility and low-cost needs to be thought through from the outset. System Architecture BWWF Feb 2001 - (c) Airspan Networks Inc

13. Spectrum Aspects 1 GHz 2 GHz 4 GHz 10 GHz 40 GHz • Rural Radio • Mobile • Satellites • Fixed links • Cordless • Mobile • BWA • ISM • MMDS • Microwave pt-pt • Microwave pt-pt • LMDS (28) • MVDS (40) LOW CARRIER CAPACITY HIGH HIGH ---------- SPECTRUM CONGESTION LOW LARGE • CELL SIZE • LOS • Atmospheric Attenuation SMALL • Optimum balance between • Performance • Ease of Deployment • Economics LOW INTRINSIC COST HIGH PCS MMDS 900 MHz 3.8 GHz BWWF Feb 2001 - (c) Airspan Networks Inc

14. Home PNA and HomeRF allow simple and fast installation of CPE Customers may extend home networks more easily More equipment can be recovered when subscribers churn HomeRF and HomePNA Integrated Subscriber Terminal Phone1 RJ11 Home Wiring Phone2 ST-P1V2 Connect Box Power Supply BWWF Feb 2001 - (c) Airspan Networks Inc

15. O&M - key requirements • Fault detection and repair • Presentation of events • Redundancy - automatic/manual switching • Routine/background testing • Over the air customer activation • Minimal turn-up cost • Links into other management systems • Service management • Performance analysis • Quality of service • Minimize cost and frequency of customer call out • Evolve with the operator BWWF Feb 2001 - (c) Airspan Networks Inc

16. AS8100 Network Management System SUPPORTS ALL AS4000 Releases Comprehensive graphical-based network management system BWWF Feb 2001 - (c) Airspan Networks Inc

17. Typical residential installation • Simple, fast install: typically 10 STs per 2-man team per day • Low installation costs BWWF Feb 2001 - (c) Airspan Networks Inc

18. Radio survey • Note: trees all around! Systems need to work reliably in this environment! • Results used to predict which subscribers can be reached: targeted deployment at lowest operational cost BWWF Feb 2001 - (c) Airspan Networks Inc

19. Modularity to achieve scalability and customisation Re-use of hardware as multi-function boards: soft-configured for different functions: Reduces costs Simplifies spares Simplifies maintenance Minimal requirement for site visits Full configuration and upgrade via O&M Infrastructure BWWF Feb 2001 - (c) Airspan Networks Inc

20. Airspan’s Response – AS4000 Wireless DSL AS8100 Sitespan AS4000 CT and AC AS9000 Airplan AS4000 Subscriber Terminals AS4000 BWWF Feb 2001 - (c) Airspan Networks Inc

21. Conclusion • Broadband Wireless is here today and being deployed worldwide! • Low-cost solutions are available for residential markets – especially SoHo applications • Application of new technology is driving costs down: • Quicker install, HomeRF/PNA, and self-install • Product costs • Delivery of bundled services (voice and data) produces a compelling business case for ILECs, CLECs and ISPs BWWF Feb 2001 - (c) Airspan Networks Inc

22. Thank you for listening….. www.airspan.com Leaders in the Wireless DSL market

23. Company Overview www.airspan.com

24. Company Profile • A global supplier of Wireless DSL systems and solutions • Dedicated solely to wireless fixed access telecommunications • Established technology with a proven track record • Committed to the evolving business & technological needs of our customers BWWF Feb 2001 - (c) Airspan Networks Inc

25. Experience - 1992 to Today • Formed in 1992 to focus on R&D of wireless communications within DSC Communications • A pioneering product range launched in 1996 • One of the first to deploy point-to-multipoint radio systems • Became an independent US corporation in February, 1998. Investors included Sevin Rosen, Oak, and Deutsche Bank • IPO in July 2000 BWWF Feb 2001 - (c) Airspan Networks Inc

26. Resources • Headquartered in Florida, with primary operations in London • More than 100 engineers involved directly with R&D • Self-contained facilities from lab testing to system assembly & delivery • A "greenfield" live air site for testing & monitoring long term system performance • Comprehensive service portfolio from initial consulting to full system support • On-site & in-house customer training programs BWWF Feb 2001 - (c) Airspan Networks Inc

27. Our Experience • Installed capacity exceeds 170,000 lines worldwide • More than 50 customers in over 40 countries • Urban to rural deployments • Approvals in more than 25 countries BWWF Feb 2001 - (c) Airspan Networks Inc

28. PTN Global Customer Base Datel BWWF Feb 2001 - (c) Airspan Networks Inc

29. Some of Airspan’s partners Technology & Manufacturing OEMs BWWF Feb 2001 - (c) Airspan Networks Inc

30. Market Overview • Internet growth is driving global demand for reliable access & increased bandwidth • World-wide telecom deregulation is creating new opportunities to provide local access • Service providers are: • Differentiating their services by offering a greater range of services • Expanding their focus beyond large business customers • Needing more cost-effective solutions • Airspan has products that meet today’s requirements and that evolve with the ever-changing market BWWF Feb 2001 - (c) Airspan Networks Inc

31. Airspan’s Response – AS4000 Wireless DSL AS8100 Sitespan AS4000 CT and AC AS9000 Airplan AS4000 Subscriber Terminals AS4000 BWWF Feb 2001 - (c) Airspan Networks Inc

32. AS4000 - an Integrated Services Platform DSL rate data and toll quality voice Internet traffic groomed for ISP presentation OSS Network AS4000 Wireless DSL Platform Architecture The CO Site The Radio Site Subscriber Sites Small Business Ethernet (10baseT) AC PSTN interconnect Voice Backhaul CT Switch Residential or SOHO TCP/IP Router Router SS Ethernet Voice V.90 modem SC Residential Voice V.90 modem The Management Site BWWF Feb 2001 - (c) Airspan Networks Inc

33. 1.6 Mbit/s Packet Delivery per RF channel today – 20Mbit/s per channel by end 2001 Up to 24 RF channels per Base Station - 480 Mbit/s total Packet throughput Internet (TCP/IP) PacketDrive - High Speed Wireless DSL High speed Packet pipe Multi-subscriber Internet Access RF Channel BWWF Feb 2001 - (c) Airspan Networks Inc

34. Airspan: Total Solution Provider • Having a working product is not enough • Customers increasingly require complete solutions • Network Management • Network/radio planning • Surveys, Installation & turn-up; ongoing technical support • Airspan provides additional product and support services: • Airspan AS8100 - Sitespan element manager • Customer Support Services • Training Services • Radio Planning Services • AS9000 - AirPlan radio planning software • Industry experts BWWF Feb 2001 - (c) Airspan Networks Inc

35. Airspan - the leader in the W-DSL market Airspan has solutions for: • Internet access • Data • Voice TODAY! Airspan has unrivalled experience - derived from many years of deployment and development of Wireless Access systems Airspan has the technology roadmap to support even higher speeds and capacities in the future BWWF Feb 2001 - (c) Airspan Networks Inc

36. www.airspan.com