DigitalBridge Communications Next-generation broadband for South Carolina October 17, 2007

1. DigitalBridge Communications Next-generation broadband for South Carolina October 17, 2007

2. DBC summary • Launched WiMAX in small towns during 2007, attaining 7% penetration in 4 months • Acquired 20,000 existing subscribers and 150 million MHz-PoPs of WiMAX spectrum, with • 135 million MHz-PoPs pending • Projected 2007 base case revenue of $11M growing to $104M in 2011 • Employed capital-efficient, pay-as-you-grow strategy: • WiMAX is fundamentally different from other technologies • DBC is able to deploy economically to smaller, under-served towns

3. Why WiMAX will succeed in underserved markets • Capital cost per home passed is $50-$75 vs. $800-$1,200 • WiMAX network is built only where sufficient density exists base station-by-base station • Service differentiates on simplicity of install/activation and portability • All-IP network permits profitable additions to ARPU • Simplicity and end-to-end control of activation enables targeting of large customer bases • among universities, visitors (roaming and non-roaming), and military communities • WiMAX networks will do for the Internet what cellular networks did for voice • communications

4. WiMAX puts DBC on the path toward personal broadband In-home self-install CPE PC card Embedded WiMAX chips Mobile devices Today Q1 2008 Q4 2008 2009

5. DBC differentiates itself at three points in the broadband service delivery chain Small Business MDUs Schools Visitor-based network NOC Fiber or Wireless Internet Backhaul Single Family Homes Military Housing • First Mile • Flexible, low-cost back office • Outsource/integrate: • Arise (customer care) • Aria (billing) • Alvarion (network management) • Outsource overhead • Scalable – invest as you grow • Middle Mile • Low-cost, high-capacity backhaul • Excess fiber capacity • Municipally-supported transport networks • Utility-owned fiber networks • Educational networks • Aggregated content • Last Mile • New WiMAX technology to reach • end customer • Underserved/exclusive markets • Self-provisioned, fast install • Portable  personal broadband • No one between DBC and • its customers

6. DBC has built a low-cost, scalable, carrier-grade back office

7. DBC’s primary markets are smaller, under-served towns • Target markets include 1,300 towns (population 20,000-150,000) with 27 million people • Key “reference” markets will be deployed this fall: Consumer Business Government/ Homeland Security • Homes • College students/staff • Visitors • Military families • Small business • Carriers/wholesale • Muni WiMAX • First responder (Missoula) • Disaster recovery • Redundant links • Work-from-home

8. DBC welcomes the opportunity to partner with South Carolina to deploy next-generation broadband • Rapid deployment to under-served parts of South Carolina • Affordable pricing of broadband voice and data services • Fair-market lease rates for spectrum • Commitment to bring broadband to college communities (on- and off-campus) • Commitment to support educational and strategic goals of local colleges

9. DBC is well positioned to help bring next-generation broadband services to South Carolina Small Business MDUs Schools Visitor-based network NOC Fiber or Wireless Internet Backhaul Single Family Homes Military Housing • First Mile • Capital-efficient, pay-as-you-grow • Flexible, non-legacy systems • Middle Mile • Capacity additions on a variable basis • Last Mile • Targeted underserved markets • Opportunistic mix of owned, leased, and “called” spectrum • Differentiated, easy, portable • service