The document summarizes a meeting between Nortel, AT&T, and their customers about Nortel's business restructuring and the ongoing partnership between Nortel and AT&T. It discusses Nortel's filing for creditor protection, the impact on customers, and AT&T and Nortel's commitment to supporting customers. It also highlights the benefits of the Nortel and AT&T alliance in providing integrated solutions to meet customer needs.

1. The Nortel and AT&T Advantage The Power of 2 … for You Sunrise, FL March 10, 2009

6. Recent Developments "We remain deeply committed to our customers and are staffed to meet their needs as we take the necessary actions to strengthen the Company. Throughout the process, we are committed to maintaining current high service levels and appropriate innovation investment levels to ensure best in class technology continues to be available to Nortel's global customer base." Source: Mike Zafirovski, Nortel President and Chief Executive Officer. Feb 24, 2009 http://www2.nortel.com/go/news_detail.jsp?cat_id=-8055&oid=100252808&locale=en-US

7. Reshaping Nortel: New Business Structure Corporate Finance / Legal / HR / Strategy/CIO Organization Enterprise Services & Solutions Sales Marketing R&D Operations Creating a more customer-centric business culture and a more competitive cost structure Service Providers Sales & Operations MEN Services & Solutions Marketing R&D CN Services & Solutions Marketing R&D A Solutions and Services Driven Business Model

11. AT&T Peter V. Keiley IP Applications Specialist

24. AT&T Industry Recognition AT&T Positioned in the Leaders Quadrant for 2008 U.S. Wireless Services Provider Magic Quadrant. (August 2008) AT&T is listed in the "Leaders Quadrant" for US, Global, Asia/Pacific and Pan-European Gartner Magic Quadrants for Network Service Providers . (1H08) Network Product Portfolio “ Leader” in all four of Gartner’s regional Network Service Provider “Magic Quadrants” – 08/2007 “ Visionaries Quadrant” for Magic Quadrant for U.S. Managed Remote-Access and Mobility Services, 2007 Frost & Sullivan 2008 North America Company of the Year Award for technological leadership, commitment to customers, strategic direction, and overall financial performance as the largest North America telecommunications service provider in North America. (July 2008) MPLS Best Value Customer Experience Best Technical Service Best Technology Innovation Favorite Provider – Large Business Customers Network Product Portfolio Fortune magazine has named AT&T as America's Most Admired Telecommunications Company. AT&T has topped the America's Most Admired list for its industry in 11 of the past 14 years. AT&T joins an elite group of other corporate leaders ranked No. 1 in their industries, including General Electric, Genentech, UPS, Procter & Gamble, and Berkshire Hathaway. (March 2009)

27. VoIP, Unified Communications Service Convergence Bundling of multiple services and support Service Convergence Bundling of multiple services and support User Experience Convergence Seamless handover between networks Source: IDC Device Convergence Single device across multiple networks and applications Product Convergence Single number, Single mailbox Service Convergence Bundling of multiple services and support It’s an evolutionary process towards Seamless, Transparent Mobility Anywhere, any device, any access to business information Enables Collaboration Towards Full Seamless Mobility

28. VoIP, Unified Communications Service Convergence Bundling of multiple services and support Service Convergence Bundling of multiple services and support User Experience Convergence Seamless handover between networks Source: IDC Device Convergence Single device across multiple networks and applications Product Convergence Single number, Single mailbox Service Convergence Bundling of multiple services and support It’s an evolutionary process towards Seamless, Transparent Mobility Anywhere, any device, any access to business information Enables Collaboration Towards Full Seamless Mobility

29. Leveraging your Nortel Investment Larry Hice

30. Business Trends Business Needs The Speed of Business is Accelerating June 9, 2009 Connect with your employees RIGHT NOW irrespective of where they were Time to Decision Access to Experts ANYTIME you need to respond to customer inquires Time to Service Eliminate human delay, SIMPLIFY COMMUNICATIONS and STREAMLINE BUSINESS PROCESS Time to $$$ Increased Velocity Required To Succeed

31. Transformation of Communications Response Time 24 hours 8 hours 4 hours Real Time Competition Local Regional National Global Workplace Desk Desktop PC Workspace Desk and PC Virtual 1980’s 1970’s 1990’s 2000’s

32. Hyperconnectivity It’s Real and Happening … Now Europe – mobile phones outnumber people (103% penetration) 1.6 million mobile phones added every day Global mobile IM grew 33% 1H08 “ 4x” growth in Internet Commerce to 100B transactions 1-2 billion A-GPS enabled handsets iPhone: Hyperconnectivity at applications level (*) 100 million iPODs sold (market to double 2005 – 2010) In 2007, 10B embedded processors sold By 2010 – 14 billion connected devices (from computers to coffee makers) 70%+ of all 2007 cars in U.S. have iPOD connectivity Sensor pocket in Nike shoes (*1 million sold in 74 days) Person to Person Person to Machine Machine to Machine The shift in communications The Mobile Phone becomes your office phone Texting / IM continues to increase

33. Nortel’s Communication Evolution for Enterprise Transformation Business Optimized Communications Communications Enabled Applications User Initiated Event Initiated Business Productivity Simplicity & Effectiveness Phase 3 Business Application Convergence Unified Communications (SIP) Consistent Experience Multimedia Applications Person/Group Productivity Anywhere Anytime Any Device Phase 2 Communications Convergence IP Telephony VoIP Network Consolidation TCO & Virtualization Phase 1 Network Convergence

37. Are you prepared?

38. Nortel Unified Communications Building Blocks Business Grade IP / SIP Mobility Survivable, Geographic Business Continuity Independent Analysts Recognize AT&T in Leaders Quadrant for BOTH Wired and Wireless Networks Integrated Applications Gateways, TUI / GUI / Presence, Video Communication Servers CS1000E CS1000M Communications Clients / Devices Pocket PC Softphone Wireless 2001 Low cost IP Digital phones Multimedia client 2007 Colour IP Screenphone IP Softphone Endpoints provide a consistent user experience and features regardless of transport mechanism. Network Wireless Wired Applications MG1000E MG1000B SRG

39. Nortel Convergence Roadmap Positioned for Any Business Need Norstar Meridian 1 BCM Meridian 1 IE CS 1000 MPS 500 / 1000 Branch Office CS1000 Meridian Remotes BCM SRG Survivable branch options CS 2100 SL 100 SOHO Branch Enterprise Large Enterprise Soft Clients Mobile Clients Desktop Clients IP Enabled Collaborative Converged Traditional

41. Nortel – A Strategic, Valued IP Convergence Strategy for Customers Historic and Continued Independent, Analysts Recognize Nortel for Technology Leadership Nortel has staked out a "Business Made Simple" strategy based on the observation that hyper-connectivity — powered by unified communications (UC) — is a foundation of the business world today and tomorrow

42. Nortel positioned in the Leaders Quadrant for 2008 U.S. Unified Communications Provider Magic Quadrant. (September 2008) Unified Communications Contact Center Frost & Sullivan Market Leadership Award for its Interactive Voice Response (IVR) solution in the Contact Center Application category (Feb 2008) Unified Communications Excellence Award Nortel Converged Office Nortel Multimedia Communication Server 5100 (2008) Contact Center IVR Nortel has a robust UC product line that is deployed with a flexible service-oriented architecture (SOA) infrastructure such that UC can be implemented as a Web service. Nortel further drives its ability to service businesses by building deep technical and marketing relationships with enterprise collaboration software leaders, IBM and Microsoft (March 2008) Nortel Industry Recognition Nortel is listed in the Leaders Quadrant for 2008 Worldwide, Contact Center Infrastructure (November 2008) Corporate Telephony Nortel is listed in the Leaders Quadrant for 2008, Corporate Telephony (August 2008) Nortel is listed in the Leaders Quadrant for 2008 IVR and Voice Portal (February 2008) IVR and Voice Portal INTERNET TELEPHONY magazine named Interactive Communications Portal and BCM450 as recipient of its 2008 Product of the Year Award (Jan 2009)

43. Questions?

45. The Nortel and AT&T Advantage The Power of 2 … for You Sunrise, FL March 10, 2009