Free Space Optic Solutions Remote Antenna Extension Application

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2. SONAbeam ™ Free Space Optic Solutions Remote Antenna Extension Application

3. Distributed/Remote Antennas - Need • Increased MOU’s (Bundle of Minutes rate plans) and upgrade to GPRS/GSM require the installation of more antenna locations • Wireless carriers have urgent market need to eliminate “dead spots” – “Can You Hear Me Now?” • Capex crisis have reduced available capital for construction of much needed BTS’s • Coverage “Crisis” Number 1 cause for churn • Availability of roof/site/space rights for placement of antennas limited and recurring monthly operational expenses are high • Wireless Carriers need to triple the number of cells sites within the next four years

4. Benefits • Capex – 80% less than cost of a new cell site • Opex- Small footprint of remote antenna dramatically reduces roof-right, tower, and infrastructure costs. Total going forward savings dwarf Capex savings. Also, backhaul costs eliminated using remotes • Fiber available in only 25% of desired remote antenna locations* • Only SONAbeam (free space optics) can fill the gap with its ability to transport the required 1.482 GB capacity. Microwave cannot do it. Only fiber and FSO can • *ADC Telecommunications Market Research

5. Application:Base Station Hotel

6. Remote Antenna Extension - Topology BASE STATION Free Space Macro Optical Link Coverage Digivance ™ RF Transport Solutions Free Space Optical Link Mobile Switching Center Co-Site Tower-Mounted Co-Site Tower-Mounted Street-Level DWDM Amplifier Solutions Amplifier Solutions Coverage OADM Diplexer Diplexer Power Power OADM Distribution Distribution In-building Unit Unit Metro Fiber Ring Coverage Radio Equipment Radio Equipment OADM Radio Network Controller Radio Base 800 MHz BTS 800 MHz BTS Station 1900 MHz BTS 1900 MHz BTS Software Systems • Singl . eView ™ Customer Management & Billing Solutions Cell Site • Metrica Service Assurance Solutions Coverage Services • Site Acquisition, Engineering Digivance ™ Digivance ™ • Materials Management, Installation RF Transport Solutions RF Transport Solutions • Commissioning & Integration, Program/Project Management Table of Contents

7. Answer: SONAbeam 1250 & ADC Digivance • ADC Digivance converts 25 mhz of RF spectrum into a digital pipe of 1.482 Gb of bandwidth • SONAbeam 1250 is the free space optical transmission system that transports the 1.482 Gb bandwidth pipe • Combined, the system extends the full capability of an existing (and very expensive) BTS to a remote distributed antenna location within 1 mile of the hub BTS location • Interoperability testing complete and 100% successful using SONAbeam 1250 and ADC Digivance. Tests conducted by ADC. • Benefits • Speed of deployment • Reduce costs of new antenna deployments by 90% and more compared to costs of dark fiber - build or lease • Reduce operational expenses going forward

8. SONAbeamTM 1250-S Introducing the SONAbeam™ 1250-S • Remote Antenna - 1.5 Gigabit Solution • Supports all data rates from 34Mbps to 1500Mbps • Operating range from 100m to 2300m (320ft to 1.4miles) • 1250-M longer range product – Q1/03 • Targeted at • Remote Antenna (BTS Hotel) applications • Metro Ethernet Network Backhaul • Carrier-Class Reliability • Telcordia design philosophy • 15 year service life • Redundant high-MTBF sub-systems • Active heating and cooling • Adaptive Power Control

9. Rx 1310/ 1550 Tx 1310 Rx 1310/ 1550 Tx 1310 Tx 1310 Rx 1310/ 1550 Tx 1310 Rx 1310/ 1550 Free Space Link Free Space Link < 1 km @ 1.5 Gbps < 1 km @ 1.5 Gbps Free Space Optics Free Space Optics Free Space Optics Free Space Optics ADC Digivance LRCS System & FSOBlock Diagram with Free Space Optics Digital RF Over Fiber System Block Diagram 800MHz Antenna D U P L E X E R Optic Tx 1550 nm Optic Rx 1310 nm Optic Rx 1550 nm Optic Tx 1310 nm A/D 50 W PA D/A Tx 800MHz BTS RX/TX Antenna Ports D/A A/D Rx ADC 800MHz Host Unit 1900MHz Antenna ADC Dual Band Remote Unit 19” Rack 2 RU High D U P L E X E R Optic Tx 1550 nm Optic Rx 1310 nm Optic Rx 1550 nm Optic Tx 1310 nm A/D 40 W PA D/A Tx 1900MHz BTS RX/TX Antenna Ports D/A A/D Rx ADC 1900MHz Host Unit 19” Rack 2 RU High

10. SONAbeam™ - Where Fiber Cannot Go • Low Cost • Rapid Deployment • High Availability • Carrier Class Design

11. SONAbeam™ 1250 GigE Pentagon Installations – DOD Accepted • Quick Installation • Easy to Redeploy • Secure • Penetrates Rain, Snow, & Fog • Low Cost • Highest Transmit Power

12. US Army US Navy British Telecom What our customers are saying “I am very pleased with the installation … I am more than willing to recommend both the fSONA product and CSG Wireless to any of your potential customers.” Arizona State Police “When compared to other products tested, it proved to be both superior in overall quality of hardware and in transmission capabilities.” Major European Carrier “We just came through a winter season filled with snow, rain and fog. The weather never caused any problems… We made the right decision and are very happy with the SONAbeam optical link.” Canadian Distributing & Warehousing Company “We are so glad to inform you that during the tests, the impression that each customer had for FSO changed in a very positive way in general and in particular for the fSONA product line. All got the same conclusion: SONABeam is the best FSO in its class.” South American Systems Integrator CA & AZ State Govt’s

13. > SONAbeam™ - Product of the Year FSO is here, it works, and it can provide a high-speed, point-to-point link without the need to lay fiber or acquire a radio spectrum license. While several vendors produce excellent FSO equipment, fSONA stands out as 2001's most innovative. Wireless links always mean a three-way trade-off between capacity, range, and reliability, but the SONAbeam™ excels in all three. -the editors at Network Magazine