1. Converged VoIP Mesh Networks Ron Sege, President and CEO, Tropos NetworksOctober, 2005

2. © 2005 Tropos Networks, Inc. Page 2 Tropos Networks Anytime, Anywhere Broadband Access. Fast. Low Cost. Simple. Tropos Control EMS Tropos Mesh Router with PWRP™ 01 2 Miles 1 WiMAX Internet Self-healing Wi-Fi Mesh

3. © 2005 Tropos Networks, Inc. Page 3 Wi-Fi Device Explosion Continues 120K+ Wi-Fi Hot Spots Projected 160M+ Cellular Phones with Wi-Fi Source: IDC Source: Instat 140M+ Wi-Fi Client Devices Source: IDC 11Mbps54Mbps150Mbps

4. © 2005 Tropos Networks, Inc. Page 4 Mesh Takes Wi-Fi to Metro Scale Wi-Fi originally designed as a wireless extension for indoor LANs Mesh makes Wi-Fi effective outdoors over large areas WiMAX will complement Metro Wi-Fi for fixed applications today and mobile ones tomorrow Speed UWB WiMAX Wi-Fi 2G 3G/UMTS PANLANMANWAN Wi-Fi Open Standard Progression Open-standards moving into wireless MAN + WAN

5. © 2005 Tropos Networks, Inc. Page 5 Metro-Scale Mesh Deployments Today Metro-scale Wi-Fi is Now a Fact Vancouver, BC Whistler, BC Livermore, CA Half Moon Bay, CA Cerritos, CA Newport Beach, CA Encinitas, CA Fullerton, CA Healdsburg, CA Pacifica, CA Federal Way, WA Las Vegas, NV Boulder City, NV Aspen, CO Burlingame, CA Chaska, MN Tulsa, OK Frisco, TX Addison, TX Granbury, TX Dallas, TX Grand Prairie, TX Corpus Christi, TX Houston, TX Gilbert, MN Moorhead, MN McMinnville, OR Paris, KY Baton Rouge, LA New Orleans, LA Lafayette, LA Franklin, TN Atlanta, GA Greensboro, NC Pensacola, FL Miami Beach, FL Alexandria, VA Baltimore, MD Croton-on-Hudson, NY Jamestown, NY Nantucket, MA Malden, MA Brocton, IL Panama City, FL St. Petersburg, FL South Bend, IN Cedar Island, NC Jackson, TN Nampa, ID Roswell, GA Rockaway Valley, NJ Washtenaw County, MI Lynchburg, TN Montgomery County, AL St. Cloud, FL Laguna Beach, CA Los Angeles, CA Oklahoma, OK Philadelphia, PA Lompoc, CA San Mateo, CA Milpitas, CA 250+ Paying Customers in 18 Months Anaheim, CA

6. © 2005 Tropos Networks, Inc. Page 6 The Metro-Scale Interest Tomorrow US Market Momentum >190 cities known by Tropos to have purchasing in process for metro-scale Wi-Fi in 2005 40 City RFPs due for release from 7/1/05 – 1/1/06 Albuquerque, NM Anaheim, CA Atlanta, GA Austin, TX Baltimore, MD Bellevue, WA Boca Raton, FL Boston, MA Charlotte, NC Chattanooga, TN Chicago, IL Cincinnati, OH Cleveland, OH Columbus, OH Corpus Christi, TX Dallas, TX Denver, CO Detroit, MI El Paso, TX Fairfax, VA Fargo, ND Fort Worth, TX Fresno, CA Galveston TX Honolulu, HI Houston, TX Indianapolis, IN Jacksonville, FL Kansas City, MO Las Vegas, NV Los Angeles, CA Maui, HI Memphis, TN Miami, FL Milwaukee, WI Minneapolis, MN Nashville, TN New Orleans, LA New York, NY Oklahoma City, OK Omaha, NE Orlando, FL Pasadena, CA Philadelphia, PA Phoenix, AZ Pittsburgh, PA Portland, OR Sacramento, CA San Antonio, TX San Diego, CA San Francisco, CA San Jose, CA Seattle, WA St. Louis, MO Tucson, AZ Tulsa, OK Washington, D.C. Wichita, KS Major US Cities Considering Metro-Scale Wi-Fi in 2005/2006

7. © 2005 Tropos Networks, Inc. Page 7 Metro-Scale Mesh is Worldwide Installations in 29 countries, and growing Activities in APAC, EMEA and CALA Growing international ecosystem Greece Italy United Kingdom Algeria Thailand Korea China Japan Malaysia Lebanon Singapore Mexico Costa Rica Taiwan Philippines Iceland Malta Congo Chile Turkey Kuwait Kosovo Iraq United States Canada Spain India Indonesia Puerto Rico Wi-Fi is a Truly Global Radio Standard

8. © 2005 Tropos Networks, Inc. Page 8 Metro Wi-Fi Disruptive Economics 5-Year Rollout Metro 1xEV-DOCable Av. Revenue per User (ARPU) $20$65 1 $30$45 CAPEX per Home Passed $29$54$66$70 Av. Cost per User (ACPU) $6.70$12.44$16.88$15.42 DSL (ILEC) Example Network Covering Los Angeles Basin Expected Throughput 1 - 5 Mbps symmetric 40 - 700 Kbps asymmetric 144 Kbps - 2.0 Mbps symmetric/ asymmetric 256 Kbps - 5 Mbps asymmetric Based on hypothetical build-out of Los Angeles Basin 1.4M homes passed, 20% penetration (280K subscribers) Wi-Fi ARPU is for fixed residential service only Mobility will add additional ARPU 1 Conservative estimate for 1xEV-DO ARPU rate at year 5 ACPU includes depreciation; CapEx includes CPE Source: Tropos, industry sources Based on hypothetical build-out of Los Angeles Basin 1.4M homes passed, 20% penetration (280K subscribers) Wi-Fi ARPU is for fixed residential service only Mobility will add additional ARPU 1 Conservative estimate for 1xEV-DO ARPU rate at year 5 ACPU includes depreciation; CapEx includes CPE Source: Tropos, industry sources Wi-Fi

9. © 2005 Tropos Networks, Inc. Page 9 Metro-Scale VoWiFi Performance Today MetroMesh networks support 750 voice subscribers per square mile –Cellular-type model: 37.5 concurrent calls per square mile at 20:1 oversubscription Real-world round-trip latency of <40 msec Layer 3 Traffic prioritization and reservation over air-link delivers carrier-class VoWiFi VoWiFi currently in use in many networks “ m VoWi-Fi” is operational today

10. © 2005 Tropos Networks, Inc. Page 10 VoWiFi Cost Savings with Metro Coverage Typical MVNO cost per subscriber per month = $13.50 (450 min/sub X $0.03 per min) Total Min/mo/subCost/mo/sub Both parties on VoWiFi network 25%112.5$0.00$0 One party on VoWiFi network 40%180$0.015$2.70 Neither party on VoWiFi network 35%157.5$0.03$3.90 Cost/min % of calls 100%450$6.60 $0.015 Savings per sub per month w/ metro coverage = $6.90 m VoWi-Fi can cut MVNO OPEX 50%

11. © 2005 Tropos Networks, Inc. Page 11 Key Roaming Technologies for Convergence 802.11r provides roaming within Wi-Fi –Provides fast roaming and fast BSS transition for 802.11 Unlicensed Mobile Access (UMA) provides roaming between Wi-Fi and cellular –Provides access to GSM and GPRS mobile services over unlicensed spectrum technologies, including 802.11 –Now part of 3rd Generation Partnership Project (3GPP) Standards-based roaming enables convergence 802.11rUMA

12. © 2005 Tropos Networks, Inc. Page 12 Summary Wi-Fi client availability and native IP infrastructure drives superior economics Mesh makes Wi-Fi work outdoors over large areas Metro Wi-Fi mesh for data and voice is proven today Economics are superior for voice, too. Wi-Fi, IP and middleware improvements will make VoWi-Fi experience even better over time Superior economics will drive m VoWi-Fi adoption