1. Copyright © 2008, SmartSynch Inc., all rights reserved. Public Wireless for the Smart Grid Secure, Scalable, Reliable Henry L. Jones II, Ph.D. Chief Scientist hjones@smartsynch.com (601) 362-1780

2. Copyright © 2008, SmartSynch Inc., all rights reserved. Public Wireless Value Secure –World-class IP-based end-to-end security Reliable –In use by public safety, first responders Scalable –Over three billion users today

3. Copyright © 2008, SmartSynch Inc., all rights reserved. PROVEN SECURITY

4. Copyright © 2008, SmartSynch Inc., all rights reserved. AT&T Wireless Network Security AT&T Mobility Radio Network Smart Grid Devices VRF 3 VRF 2 VRF 1 AT&T CCS Edge Routers AT&T Mobility Core Enterprise 1 AT&T Wide Area FR/ATM Network Separate GTP Tunnels per Device AT&T Mobility Port Traditional / Legacy FR PVC Any Supported L2 Enterp 2 AVPN VPN Enterprise 2 – site A Enterprise 2 – site n ePVC Enterp 3 IPeFR VPN Any Supported L2 (FR, ATM) ePVC AT&T Mobility Network PE Enterprise PVCs Utility Customers Customer’s existing AVPN or IPeFR MPLS Virtual Private Network Enterprise 3 – site A Enterprise 3 – site n PE Separate Dedicated L2 VLANs per Enterprise

5. Copyright © 2008, SmartSynch Inc., all rights reserved. PROVEN SCALABILITY

6. Copyright © 2008, SmartSynch Inc., all rights reserved. Ample Bandwidth Adding all possible meters in the United States = %0.0002 increase in AT&T network traffic

7. Copyright © 2008, SmartSynch Inc., all rights reserved. PROVEN RELIABILITY

8. Copyright © 2008, SmartSynch Inc., all rights reserved. Investment Comparison Technology 2008 Endpoints 2012 Endpoints 2008 Investment Cumulative 2008-2012 Investment BPL 17,000,00020,000,000$230,000,000$2,000,000,000 Proprietary RF 30,000,00060,000,000$300,000,000$2,250,000,000 Mesh 2,000,00025,000,000$100,000,000$1,260,000,000 Cellular 3,900,000,0005,000,000,000$120,000,000,000$700,000,000,000 Worldwide numbers; Based on published information and conservative estimates when required

9. Copyright © 2008, SmartSynch Inc., all rights reserved. For further information Henry Jones hjones@smartsynch.com 601-362-1780