1. AT&T’s Wireless Network Improving, Expanding, Evolving and Innovating

3. Improving Innovating Evolving Current Level of Maturity for Most Businesses Expanding Why Technology is Important GSM enables a smooth evolution as your mobile needs mature Future Deployment Voice Email/Messaging Corporate-Provided Device Video-on-demand Peer-to-peer file sharing Complex Web services ERP/SCM/CRM SFA/Field Service Fleet Workflow Enhancers Smart Devices Laptops Corporate Intranets 4G Real-time Workforce Collaboration Business Process Applications Remote Access to Business Information Business Communications 2G 3G

4. Today GPRS 48K Time 2G EDGE 237K LTE 20-50M (planned for 2011-12) Choosing the Right Technology With GSM, devices will be backward compatible as technology evolves 3G 4G Based on theoretical peak speeds. Actual speed experienced will be less. 2G and 3G not available everywhere. Future Deployment UMTS 384K HSDPA 1.8M HSPA 3.6M ( 7.2M planned for 2009-11 )

5. Speed, Coverage and Capacity AT&T’s Network Investments

11. Driving, Testing and Inspecting Managing the airwaves to improve reliability for millions of devices Drive Tests Our network team and vendors will drive over 1 million miles to test and inspect AT&T's wireless network each year Inspecting and Managing Our network is always monitored to manage and balance changing and increasing traffic Reporting Tools AT&T enables our entire workforce to support network performance with our Network Incident Tracker reporting tool Certification Our rigorous certification process assures your device and application capabilities are optimized to perform on our network

12. 3G Devices will be backward compatible as technology evolves Moving to Mobile Collaboration 3G enhancement delivers considerably faster 3G speeds beginning in 2009 Evolving Work flow enhancers Video Conferencing Business Process Applications

13. Moving to Real-time Rich-Media LTE 4G evolution projected to deliver IP-based flexibility and higher speeds 4G Innovating Video-on-demand Peer-to-peer file sharing Complex Web services Real-time Workforce Collaboration

14. Voice Email/Messaging Corporate-Provided Device Video-on-demand Peer-to-peer file sharing Complex Web services ERP/SCM/CRM SFA/Field Service Fleet Workflow Enhancers Smart Devices Laptops Corporate Intranets What should you be doing now? Your technology plan should align with your business mobilization plan Assess your current business processes to determine the impact of Line of Business and Horizontal applications Evaluate your remote access strategies Improving Innovating Evolving Expanding Future Deployment Real-time Workforce Collaboration Business Process Applications Remote Access to Business Information Business Communications 4G 2G 3G

15. Thank You!

16. Backup

18. Speed 3G 4G 2G AT&T’s GSM Network Technology LTE: LTE, or Long Term Evolution, is a fourth generation (4G) technology standard under development that will provide significantly increased peak data rates. EDGE: EDGE stands for Enhanced Data GSM Environment and is a digital mobile phone technology that allows increased data transmission rates and improved data transmission reliability. EDGE is often called 2.5G GPRS: Short for General Packet Radio Service. It is a standard for wireless communications which runs at speeds up to 115 kilobits per second. HSPA/HSDPA/HSUPA: HSPA, or High Speed Packet Access, is a general term that encompasses both HSDPA and HSUPA, which increase downlink and uplink speeds for AT&T’s 3G network, respectively. UMTS: Universal Mobile Telecommunications System, UMTS, is a GSM-based third generation (3G) cell phone technology, which is also being developed into a 4G technology, HSPA operates over UMTS.