1. Copyright © 2008 Vanu, Inc. 1 Software Radio Infrastructure Solutions for Caribbean Carriers Rob Anglin COO Vanu, Inc. July 16, 2008

2. Copyright © 2008 Vanu, Inc. 2 Vanu has Pioneered Software Radio Technology History –Evolved from groundbreaking software radio research at MIT –Company founded in 1998 by Dr. Vanu Bose –100 employees –Offices in Cambridge, MA, Bangalore, India & New Delhi, India Industry Awards –Top 25 Emerging Technology companies, SmartTechie, SiliconIndia, 2008 –Mass NetComm Product of the Year, 2008 –Chosen IEEE Spectrum Magazine’s 2006 “Wireless Winner”, 1/2007 –GSM Association Technology Award for Most Innovative Infrastructure, 2005 –SDR Forum Industry Achievement Award for 2005 –Ten Coolest Companies Award by Telecommunication Magazine, 2005 –World Economic Forum Technology Pioneer, 2004 –Wall Street Journal Technology Innovation Awards: Runner Up in the Wireless Category, 2004

3. Copyright © 2008 Vanu, Inc. 3 Anywave has Unique Benefits and Capabilities Run multiple standards simultaneously –Dual mode (GSM/CDMA) product is deployed and operational –Only infrastructure product to support multiple standards simultaneously Cost-effective solutions for remote or rural site deployments –Reduce OPEX for sites requiring satellite backhaul Standards upgrades are software downloads –Download new software, rather than forklift upgrade to new standards “…the first step in what has proven to be a radio technology revolution.” -Michael Powell, FCC Chairman commenting on first ever FCC certification for a software- defined radio granted to Vanu, Inc.

4. Copyright © 2008 Vanu, Inc. 4 Technology Overview - The Vanu Anywave Solution Vanu Anywave Radio Access Network (RAN) –Multiple cellular standards operating at the same time –Add new wireless standards through remote software-only downloads –Compatible with legacy circuit switched and IP-based core networks Base Transceiver Station (BTS) Base Station Controller (BSC/RNC) Packet Control Unit/Function (PCU/PCF) Mobile Switching Center (MSC) GPRS/Packet Data Service Node (GSN/PDSN) PSTN IP

5. Copyright © 2008 Vanu, Inc. 5 Anywave: Multi-Standards on a Single Network RF Head per frequency band Single BTS server can support multiple wireless standards in any frequency band Single BSC server can support multiple wireless standards in any frequency band Vanu’s open standards approach enables faster deployments while future-proofing the network for remote additions of new standards and additional capacity Waveforms are digitized into IP packets and sent via GigE to be processed for any technology

6. Copyright © 2008 Vanu, Inc. 6 Vanu VoIP Core Solution For Current VoIP providers: Capitalize on existing network resources to provide new services without large capital expenses Leverage existing switch, billing system, and delivery platform to support both wireline and wireless subscribers For Greenfield Wireless Network Deployments: VoIP switching infrastructure is significantly lower cost than traditional circuit switching Flexibility to add wireline service quickly and seamlessly

7. Copyright © 2008 Vanu, Inc. 7 GSM / CDMA Hosted Switch Service A hosted core network enables operation of multiple technologies without the large upfront CAPEX

8. Copyright © 2008 Vanu, Inc. 8 Vanu’s Satellite Backhaul Solution Traditional Approach Vanu Approach Opportunity Expand cellular service in rural areas Challenges Cost of Bandwidth – connectivity Satellite access : $US 2 - 5 K / month Voice delay introduced by satellite Traffic pattern Up to 80% of the calls, originate and terminate in same town Case Study: GCI in Alaska This solution was chosen to connect over 200 remote areas across the state of Alaska Up to 70% of monthly satellite cost eliminated Improved voice quality without satellite latency

9. Copyright © 2008 Vanu, Inc. 9 Reduce CAPEX & OPEX Increase Roaming Revenues Cost Effective Remote & Rural Access One System – Multiple Standards – New Revenue Sources Summary

10. Copyright © 2008 Vanu, Inc. 10 Thank You One System – Multiple Standards – New Revenue Sources

11. Copyright © 2008 Vanu, Inc. 11 Case Study: GCI Communication Background: Alaska’s largest telecommunications firm, providing local, long distance, wireless, cable TV & Internet services Deploying a Vanu GSM solution to bring wireless communications to over 200 remotely located villages across the state of Alaska– islands of coverage The Challenge: To find a cost-effective solution for remote sites where cellular coverage hasn’t previously existed Cost-effective migration path to new technologies The Solution: Deployed Vanu’s GSM Software Radio at each cell site with the ability to add CDMA & other future standards Capacity can be increased or moved to other sites remotely via software downloads IP satellite backhaul

12. Copyright © 2008 Vanu, Inc. 12 Network Architecture Vanu GSM/CDMA BTS Vanu GSM/CDMA BTS Vanu GSM/CDMA BSC/TRAU/PCU Mavenir mOne Convergence Platform VLR/HLR GW MGW VoIP Switch SGSN/GGSN/ PDSN AAA HLR SMSC MMSC WAP GW PSTN SS7 Internet