Delivering Capacity, Low Latency and Low Jitter Jim Freeze, SVP Marketing & Alliances October 2007

BELAIR NETWORKS CONFIDENTIAL Slide 2 BelAir Networks Private technology company funded by leading VCs, mobile and cable operators Single Focus  Mobile Broadband Multi-Service Mesh Networks Field-Proven Performance  Deployed in over 300 installations  Customers in North America, Asia, Europe, Latin America Comprehensive product family  Multi, dual, & single radio platforms supporting Wi-Fi, Public Safety, WiMAX  Industry-leading performance and scalability  Designed to deliver carrier-class capacity and reliability  The only solution optimized for carrier-grade voice services

BELAIR NETWORKS CONFIDENTIAL Slide 3 Key Requirements In Identifying The Right Technology for Public Safety Metro-scale Networks Mobility  Do NOT assume that mobility is enabled  Will voice calls & VPN seamlessly hand-off between WiFi APs Broadband  Do NOT settle for “wireless dial-up”  Deliver true broadband today and plan to scale Multi-service  It’s NOT just about WiFi!  What about 4.9GHz Public Safety? What about WiMAX? Mesh  Proven mesh backhaul – capacity on demand  Reliable, low latency, support for high quality video/voice

BELAIR NETWORKS CONFIDENTIAL Slide 4 All Meshes Are Not Created Equal - Shared Mesh Wireless Access & Backhaul “Shared Mesh” Multipoint-to-Multipoint Links Wire Ethernet Access What Does a Shared Mesh Deliver: Limited capacity – shared bandwidth High, unpredictable latency, jitter Very limited scaleability Highly unpredictable performance No ability to support Video or VoIP same frequency and same channel All radio nodes and all devices communicate on the same frequency and same channel in a hub- like broadcast fashion.

BELAIR NETWORKS CONFIDENTIAL Slide 5 Only With BelAir: Modular & Upgradeable Platform Architecture Integrated Antennas for access and backhaul Modular Radios Integrated Switch & Router Line interface Integrated Power Outdoor Chassis IP backbone for card interconnect One to Six BelAir-designed Radios Fully modular universal radio and network interfaces Licensed and Unlicensed Frequencies Carrier Network Interfaces Sophisticated Layer 2/3 Switch Router Carrier-Grade Reliability and Performance Industry’s Best Warranty & only RoHS compliant products

BELAIR NETWORKS CONFIDENTIAL Slide 6 Switched Mesh – Only With BelAir! Point-to-Point Link Isolated Channel 25 Mbps Point-to-Point Link Isolated Channel 25 Mbps Point-to-Point Link Isolated Channel 25 Mbps Point-to-Point Link Isolated Channel 25 Mbps PATENTED Device Port User VLAN Deny Contain Class of Service Access Control Belair OS Priority/QoS Rate Limit Packet Classification Permit Switch-likePerformance Benefits of Switched Mesh Backhaul Exceptionally low latency High capacity, scaleability Predictable performance Redundancy & resiliency

BELAIR NETWORKS CONFIDENTIAL Slide 7 BelAir’s Switched Mesh Only BelAir’s Switched Mesh Delivers Capacity and Low Latency Source: Novarum testing, January 2007; independent testing of London, May 2007 ACCESS BACKHAUL CITY PERFORMANCE ACCESS BACKHAUL CITY PERFORMANCE Phila., St. Cloud, & Anaheim Madison, WI Tempe, AZ Raising the Performance Bar! BelAir delivers #1 performance – 5 times faster than 2 nd place network! 95% coverage! Toronto, London, UK 5 Meg 200K X X Other vendors struggle to deliver true broadband performance! Santa Clara, CA

BELAIR NETWORKS CONFIDENTIAL Slide 8 Thank You!