Wide Area Wireless Broadband Corporate Profile Series A

Wide Area Wireless Broadband

Corporate Profile • Series A November, 2002 led by Ven. Growth, BDC • Series B November, 2003 led by JP Morgan • Strategic Investment T-Ventures March 2004 • 69 employees • Locations: • Ottawa, Canada: R&D and current head office • Sales: Atlanta, Dallas, Phoenix, New York, Seattle • Bel. Air 200 shipping since March 2004 • 20 commercial deployments in North America • Bel. Air 100 now shipping 2

Bel. Air Networks Vision • Wide Area Wi-Fi § Complete solution for metro scale WI-FI infrastructure § Wi-Fi access today, but other access technologies possible § Wi-Fi, Wi. MAX, cellular can exist on the same platform • Carrier-grade, outdoor solution § Integrated wireless mesh backhaul and wireless access § Delivers broadband data, voice and video services § Software to manage multiple applications • Target Markets § Metro Wi-Fi, Hospitality, Higher Education Campuses, Transportation & Logistics, Government, Multi-Dwelling Units 3

Bel. Air Mesh Applications 4

Complete Wide Area Wi-Fi Bel. Air provides complete infrastructure for Wide Area Wi-Fi. Includes integrated wireless backhaul and wireless access. 5

Enterprise Performance, Metro Scale • Standard Wi-Fi Clients • Enterprise applications § Vo. Wi-Fi § Enterprise security § Multiple SSIDs and VLANs § Mobility Metro coverage for Wi-Fi with no compromises. 6

Bel. Air’s Outside In Coverage • Directional access antennas project coverage in from the outside • Complete building coverage with fewer nodes • Eliminates need for indoor wired network to interconnect APs 54 Mbps Point to Point Backhaul Links Bel. Air system covers outdoor open areas or inside buildings. 7

Bel. Air’s Mesh Technology • Multiple Point-to-Point Mesh with Wi-Fi Access § High capacity, robust, secure wireless backbone • Reduces backhaul costs § Enables wireless access nodes to be placed where needed • Provide Wi-Fi coverage inside buildings from the outside 8

Bel. Air’s Mesh Approach • Multi-radio mesh with multiple point-topoint wireless backhaul links § Access is 2. 4 GHz Wi-Fi at 11 Mbps up to 54 Mbps § Backhaul is multiple point-to-point 5 GHz links • Up to 3 independent 54 Mbps links • Capacity § Highest capacity wireless mesh • Performance similar to wired links § More than 10 times capacity of single radio mesh § 3 times the capacity of dual radio mesh • Latency § Bel. Air has lowest latency § Bel. Air system can support voice and video § Dual radio and single radio mesh have shared backhaul so latency is poor and unpredictable • Interference and co-existence § Bel. Air is a better citizen sharing the unlicensed bands and has more flexibility in dealing with interferers 9

Single Radio Mesh and Vo. IP • In single radio mesh systems, when one node transmits, its neighbors must listen. § All nodes use same channel Transmitting § Each node must buffer packets until network is not busy § Buffering represents delay § Backhaul links between APs are ‘transient’ f 1 • Delay and jitter vary depending on the number of neighbors and their activity. f 1 • Increased latency and variable jitter reduces voice quality § Single radio and other mesh systems with shared backhaul • Single radio mesh and other shared backhaul mesh systems can’t support voice over 2 hops or more Single Radio Mesh Listening and Blocked f 1 Buffers Data Link Not Made, Node is Blocked Listening and blocked f 1 Listening But No Data Arriving § Also impacts other multimedia applications 10

Multi-Radio Mesh and Vo. IP • Bel. Air multi-radio mesh architecture § Dedicated point to point links between Transmitting nodes • Stable and persistent links Multi-Radio Mesh § No buffering is required § Latency is low (1 -2 ms delay per hop) f 1 § Jitter is independent of network topology f 2 • Parallel operation is possible f 3 § Wireless access and backhaul on different channels • Enables voice and other multimedia applications mixed with data f 1 f 2 § Backhaul links on different channels § Not a shared backhaul network Listening and Ready Listening and ready Backhaul Links are Persistent f 3 Listening and Ready Bel. Air system enables Vo. Wi-Fi across large mesh. 11

Backhaul Mesh Connections • = Bel. Air 100 § § 2 Radio Platform 1 Access Radio Module 1 Backhaul Radio Module Edge mesh node • = Bel. Air 200 § § 4 Radio Platform 1 Access Radio Module Up to 3 Backhaul Radio Modules Core mesh node 12

Bel. Air 200 • Integrated Solution: Network-in-a-Box • 4 Radio Platform § 1 Access Radio Module, 2. 4 GHz, 11 or 54 Mbps § 3 Backhaul Radio Modules, 5 GHz, 54 Mbps § Integrated 100 Mbps Ethernet § Embedded Router, Gateway, Switch § Outdoor, environmentally hardened • Hardware to deliver coverage and capacity needed for large networks § Multiple applications § Voice over Wi-Fi • Software to manage and secure the system § WPA, AES, VLANs, VPNs, OSPF § Multiple SSID support Diameter: 12 inches Height: 16 inches Weight: 25 lbs § Rogue AP detection 13

Bel. Air 200 Hardware • Backhaul 5 GHz antenna array § 8 antennas, 15 d. Bi gain § Each 45 degree horizontal, 20 degree vertical Bel. Air 200 Top View • Line Interface Module § 100 Mbps Ethernet § Fiber Interface § Connection to the wired network • AC powered with backup 4 3 6 § 95 – 264 V § Integrated Battery Backup (15 minutes) • Integral 2. 4 GHz access antenna § § Diversity, dual cross polarized, 8 d. Bi gain 65 degrees horizontal and vertical pattern 22 degree up-tilt to beam into buildings Extended Range WLAN 802. 11 b and. 11 g 5 Electronics Enclosure 2 7 1 8 • Designed for outdoor environment o o § -40 to +50 C operation § Water and Dust proof (IP 56/NEMA 4 rating) 14

Bel. Air 100 • Two Radio Platform § Same high performance radio modules as § § Bel. Air 200 (BRM 2 and ARM 2) Outdoor extended temperature operation AC powered, pole mounted Works with Bel. Air 200 networks Consistent software and management • Application § Mesh termination node • Connection to the wired backhaul § Lower capacity networks • Single hotel, lightweight Metro Wi-Fi § Mesh edge nodes § Large indoor venues 15

Bel. Air 100 Hardware • Designed for outdoor environment § -40° to +50° C operation § Water and dust proof (IP 56/NEMA 4 rating) § 13. 5” high by 5. 5” thick by 7” wide § Weight 11 lbs • Integrated antennas § One directional Backhaul antenna (10. 5 d. Bi) § One directional Access antenna (8 d. Bi) § Optional external antennas for both radios • AC powered with backup § 95 – 264 V § Integrated 15 minute Battery Backup 16

Bel. Air System Software • Same software for Bel. Air 100 and Bel. Air 200 • First Wide-Area Wi-Fi solution to support private and public networks over a single network § MSSID – up to 16 virtual Wi-Fi networks • 1 public and 15 private SSIDs mapped to separate VLANs with different security policies § Enables different service providers on a single infrastructure § Supports open public and secure private applications • Enhanced security § 802. 1 x authentication and TKIP for access § AES encryption for newer Wi-Fi client cards § TKIP support on backhaul links • Interference detection from other systems § Rogue AP Detection on the Bel. Air 200 17

Release 3 System Software • Release 3. 0 – February 2005 § BRM 2 • Dynamic Frequency Selection for radar avoidance • Delivers operation in 5470 -5725 MHz band for access to more channels • Radar Detection § Management Enhancements • New SNMP standard tree • Active Alarm retrieval • SYSLOG to console • Release 3. 1 – March 2005 § ARM 2 • delivers 802. 11 g for higher capacity • 802. 11 i support (WPA 2 with AES) for enhanced security • Spectralink support: SVP protocol detection § Better support for Vo. IP applications • Quality of Service - Access Radio queues enables Vo. IP over Wi-Fi • Backhaul radio queues enables Vo. IP and TDM over backhaul 18

Municipal Wi-Fi Networks • Bel. Air is the ONLY Wi-Fi product that supports metro scale deployments in urban areas § Large mesh with just a few wired backhaul locations § Cover outdoor street level or inside buildings up to 25 stories • Capacity to support multiple applications throughout network § Multiple SSIDs mapped to different VLANs § Voice support • Use mesh to go around obstructions • Add security/surveillance… 19

Metro Deployments • Telecom Ottawa § 24 Bel. Air 200 s in downtown Ottawa § Wi-Fi public access zone and complete hotel coverage from the same mesh • Athens, Georgia § 7 Bel. Air 200 units downtown § 24 blocks covered § University of Georgia • WAGZone • Mobile Media Consortium 20

University of Georgia 21

Euro Metro Coverage Area Map Coverage Areas of Interest Tower Hotel 22

Bel. Air’s Network Layout Cisco Switch (3550) Cisco 3745 N 7 Ch. 152 Internet N 6 10/100 Mbps Base-T Ch. 166 N 5 N 1 Ch. 156 N 4 Ch. 156 Ch. 148 Tower • European Deployment • 100 m. W EIRP limit on access • 1 W EIRP limit on backhaul • Coverage provided indoors and outdoors N 3 Ch. 166 Not To Scale Ch. N 2152 N 8 Hotel 23

Location Photos 24

Bel. Air in Hospitality • Practical coverage of large venues § Hotels, resorts, convention centers § Sports arenas, marinas, ski lodges • Bel. Air solution is ideal for complete large hotel Wi-Fi coverage • Hotels are perfect for Bel. Air’s “outside-in” Wi-Fi coverage • Bel. Air system supports both public and private applications within a hotel § Wi-Fi public access § Security, retail, back office 25

Sheraton Maui • 6 building complexes, 529 rooms over 23 acres § Fitness Center, Salon & Day Spa, 6 Restaurants and Lounges § 6, 500 square foot ballroom § 140 Yard Fresh Water Lagoon-Style Pool • Challenges: § Very limited room for deployment on the ocean side § Limited locations for mounting or power access 26

Results 13 Bel. Air 200 s provide full Wi-Fi coverage for entire Sheraton property. 27

Louisiana State University • Campus and MDU Wi-Fi coverage for housing near Louisiana State University • Over two square miles of open areas and buildings including 2, 200 apartments • Residential broadband for apartments • Public access Wi-Fi zone in common areas • 4 Bel. Air 200 s in phase 1 28

Transportation/Logistics • Warehouse/Shipping § Upgrade to wide area coverage § RFID, Mobile Data, Vo. IP § Large warehouses, manufacturing, shipping yards, construction sites • Transportation applications § Commuter rail lines § Airport terminals and hangers § Wireless security cameras and logistics support • Ports and waterfronts § Security and logistics 29

Fort Myers Airport • Two Bel. Air 200 s provide complete coverage of existing terminals • Four more will cover construction site as they build new terminals 30

Summary • Bel. Air provides complete solution for Wide Area Wi-Fi § Everything from the wired interconnection to the wireless client § Enterprise Wi-Fi performance on a metro scale § No compromises – throughput, capacity, security, Vo. Wi-Fi • Unique, patented Cellular LAN architecture § Multi-radio approach solves mesh scalability issues § Supports voice with high Qo. S • Bel. Air 200 shipping in volume § Available in multiple configurations • Bel. Air 100 now available § Lowers cost of simple, single building installations § Also works as part of larger Bel. Air mesh systems www. belairnetworks. com 31

Wide Area Wireless Broadband

Mesh Options: Single Radio • Each node has a single radio § Access and backhaul share radio § All nodes tune to same frequency • Mesh is formed using omni-directional antennas to send and receive to all the other nodes within range § Backhaul is a shared network f 1 § Mesh nodes and clients share available bandwidth § System capacity is very low § Latency is high and unpredictable f 1 f 1 • Most mesh products today are single radio § Simple, but won’t scale to a large system • Cannot support many broadband users Unacceptable For Permanent Broadband Infrastructure 33

Mesh Options: Dual Radio • Each node has two radios § Access and backhaul are separate • Mesh is formed using omnidirectional antennas § Multipoint-to-multipoint § Backhaul is a shared network operating on a single channel § System capacity is low • Dual radio mesh is an improvement § Solves the mesh forwarding problem § Still limited capacity and scalability § Works for small networks § But… f 1 f 1 a 1 a 1 a 1 Won’t Support Voice Over Wi-Fi—Latency High/Unpredictable 34

Mesh Options: Multi-Radio • Each node has multiple radios § Client access and mesh backhaul are completely independent • Mesh formed with multiple point -to-point links, dedicated radios, directional antennas § Backhaul is an independent network operating on multiple channels • Can run custom protocol • Independent backhaul links provide greater capacity • Point-to-point links enable greater separation of mesh nodes § Backhaul mesh has performance of wired network Coverage And Capacity Scale To Large Network 35

Capacity Comparison • Capacity of Multi-Radio system constrained by backhaul § Can increase capacity of multi-radio system by adding more wired egress points 36