© 2009 AT&T Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. Surfin’ USA: Riding the Crest of the Broadband Wave Kris Rinne SVP, Architecture and Planning

The Rise and Rise of Data Page 2 Relative Network Load UMTS/HSPA Voice and Data Traffic Source: 3G Americas/Peter Rysavy ~ 2x ~ 18x Packet data Voice Jan 07 Mar 07 May 07 Jul 07 Sep 07 Nov 07 Jan 08 Mar 08 May 08 Jul 08 Sep 08 Nov 08 Jan 09 Mar 09 May 09

Wireless Data Growth at AT&T Page % growth over 12 quarters

Postpaid Subscribers with Integrated Devices Page 4

AT&T Network Enhancements Deployment of 850 MHz Carrier 90% complete Recent rollouts in New York, Atlanta, Houston Page MHz spectrum provides better in-building coverage and has better propagation

Network: The Economic Stimulus $38 billion invested over two years to enhance wireless and wired networks and supporting infrastructure $17 billion and $18 billion to be invested this year this year, two-thirds of which is being used for network expansion and enhancement Increasing 3G coverage – Adding 20 new cities Increasing coverage, capacity – Building ~2,000 cell sites this year Page 6 In 2008, AT&T invested more than any other company in America last year.

Network: Upgrading to HSPA Planned deployment in Charlotte, Chicago, Dallas, Houston, Los Angeles and Miami 2010 – 25 of the top 30 U.S. Markets 2011 – 90% of AT&T’s 3G footprint Page 7 Case Study Source: 3G Americas/Peter Rysavy Downlink Speeds for European 7.2 Network Good Coverage3.8 Mbps Mobile1.9Mbps Bad Coverage1.8Mbps (median bitrate)

Upgrading Backhaul – looking to the future Page 8 In Region – Fiber to the 3G Cell Site Out of Region – Ethernet over Fiber Upgrades will payoff with LTE

The Road to LTE Page 9 Trials AT&T Spectrum for LTE 700 MHZ and AWS spectrum used exclusively for LTE 700 MHz has excellent propagation characteristics Covers 100% of top 20 markets Covers 87% of U.S. population Initial Deployment

© 2009 AT&T Intellectual Property. All rights reserved. AT&T and the AT&T logo are trademarks of AT&T Intellectual Property. Questions?