1. Copyright © 2006 AT&T. All rights Reserved. AT&T Cool Tools Victoria J. Readnour Senior Account Manager missvic@att.com Running on AT&T Wireless High Speed Access to the Public Internet

2. Copyright © 2006 AT&T. All rights Reserved. Page 2 AT&T Wireless – How it Works! How It Works: 802.11B/G Wi-Fi Hot Spots! Remote Access Services: Wi-Fi Mobile (PC Cellular Card) Broadband (DSL/Cable) Dial-up ISDN FREE Hotspot detection and use Tsunami in here and CSU in the EBC Single PC Client which enables mobile access to AT&T VPN, IntraNet & Enterprise Applications Users only need to know credentials: Service selection, VPN credentials, DNS, etc are all centrally configured

3. Copyright © 2006 AT&T. All rights Reserved. Page 3 AT&T Wireless - Availability Availability: The goal of AT&T Wi-Fi & Wired Ethernet service is to provide customers Internet access when and where they want it, around the world. AT&T “Roaming” services are available through a number of agreements between AT&T Wi-Fi and other Wi-Fi providers: GoRemote Internet Communications, Inc. (Aggregator) WeRoam (Aggregator) Additional WiFi Service Providers U.S. based Remote Access Business Users have access to: – 8,849 Dial-up locations in 149ountries** – 28,552 WiFi locations in 55 countries** 14,258 in the U.S. 14,294 Rest of World locations – 1,645 Wired Ethernet locations in the World** **Footnote: Number of Dial up, WiFi & Wired Ethernet locations as of 2/28/06. Numbers can vary weekly. **AVTS & ANIRA are available in fewer countries do to IPSEC encryption restrictions.