Filed by AT&T Corp. Pursuant to Rule 425 under the Securities Act of 1933 and deemed filed pursuant to Rule 14a-12 under the Securities Exchange Act of 1934 Subject Company: AT&T Corp. Commission File No. 001-01105 On March 5, 2002, AT&T distributed the following information: (Slide #1) [AT&T Logo] David Dorman President (Slide #2) Safe Harbor The following are "forward-looking statements" which are based on management's beliefs as well as on a number of assumptions concerning future events made by and information currently available to management. The audiences are cautioned not to put undue reliance on such forward-looking statements, which are not a guarantee of performance and are subject to a number of uncertainties and other factors, many of which are outside AT&T's control, that could cause actual results to differ materially from such statements. For a more detailed description of the factors that could cause such a difference, please see AT&T's filings with the Securities and Exchange Commission. AT&T disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. This information is presented solely to provide additional information to further understand the results of AT&T. Additional Information And Where To Find It On December 19, 2001, AT&T and Comcast agreed to combine AT&T's broadband business with Comcast. In connection with the proposed transactions, AT&T and Comcast will file a joint proxy statement/prospectus with the Securities and Exchange Commission. Investors and security holders are urged to carefully read the joint proxy statement/prospectus regarding the proposed transactions when it becomes available, because it will contain important information. Investors and security holders may obtain a free copy of the joint proxy statement/prospectus (when it is available) and other documents containing information about AT&T and Comcast, without charge, at the SEC's web site at www.sec.gov. Free copies of AT&T's filings may be obtained by directing a request to AT&T Corp., 295 North Maple Avenue, Basking Ridge, NJ 07920, Attention: Investor Relations. Free copies of Comcast's filings may be obtained by directing a request to Comcast Corporation, 1500 Market Street, Philadelphia, Pennsylvania 19102-2148, Attention: General Counsel. Participants In Solicitation AT&T, Comcast and their respective directors, executive officers and other members of their management and employees may be soliciting proxies from their respective stockholders in connection with the proposed merger. Information concerning AT&T's participants in the solicitation is set forth in AT&T's proxy statement for its annual meeting of stockholders, filed with the SEC on March 30, 2001. (Slide #3) T Communications Services Strengths Operational Excellence Market Opportunity Competitive Strength Financial Flexibility Business Consumer 4 M+ customers ~60 M customers $14 B growth services revenue Leader in long distance voice Leader in enterprise Developing integrated customer relationships service offerings (Slide #4) Unparalleled Consumer Assets 60 million customer relationships Financial Comprehensive Strength consumer database [AT&T Consumer Logo] AT&T's Global World renowned Network AT&T brand Strong management team (Slide #5) AT&T Business Services Strategic Priorities Access & Local......Connectivity Services......Managed Services......Outsourcing - Global Enterprise Networking Leader - Grow revenue share in Local and Global - Grow Data/IP revenues with industry - Maintain LD Voice revenue share - Improve "growth" service profitability - Maximize scale levers to deliver the lowest unit costs (Slide #6) Transforming AT&T Sales and Service - Deepened bench in sales leadership - Increased Data/IP and Local sales force - Simplified product offerings - Revamped sales incentive programs - Launched Solutions Center Customer Care and Provisioning - One Organization responsible for end-to-end customer care - Realigned resources to build and service growth portfolio - Leverage AT&T Labs resources to focus on customer priorities - Engineering and development driving process cost reductions - E-enablement/Concept of One (Slide #7) Access & Local Scaling Local Services - Presence in 85 Cities in 67 MSAs - Covers ~75% of Business Local Market [Graphic map of United States showing cities covered] (Slide #8) Access & Local Managing Market Profitability Drivers 2001 Annualized Profitability % Margin 80% O Omaha X X O O O X New York O x x O O X X X X X O O X X x x xxx O x X x OO O O O X x x x O Hartford X x X x x O x x x x 20% 0$ $150 2001 Annualized Revenue $M Gross Plant Scale x < $50M O < $100M X < $300M (Slide #9) Outsourcing Building Solutions Leveraging the Network Outsourcing Opportunity $ Billions Revenue 100 X $74 B X $65 B X $59 B CAGR 2000-2004 10% 0 2002 2003 2004 Source: IDC, February 2002 Growing revenues in long-term value-added relationships 1995 2000 2002 Local Area Internet Work-at-home Next Network Services VPN Generation Management Network Transport PBX Call Center Computer- Call Center Management Technology Telephony Consulting Management Integration Corporate Voice Mail Custom Solutions.....Managed Services Offer Incubator (Slide #10) Managed Services Establishing Market Leadership Best Solutions e-Infrastructure Hosting Provider - Hosting - Web Hosting Magazine - Intelligent Content Distribution Services - Managed Data Storage Best Overall Enhanced Virtual Private Networks Managed Services Portal - Extranets - Tier 1 Research - Intranets - Remote Access - IP Security VPN Market Leader High Availability & Security Services - Yankee Group - Ultravailable Solutions - Business Continuity Assessment - Managed Firewall Services - Managed Token Authentication - Managed Intrusion Detection AT&T Global VPN Service Managed Network Services - Network Magazine - Managed Frame and ATM Product of the Year - Managed Router Services - Network Application Services Internet Access Services - Managed Internet Services - Private Label Services (Slide #11) Managed Services Enterprise Hosting Continuum Increasing Levels of Management and Performance Guarantees Complexity of Managed Services Business Applications AT&T Managed Hosting AT&T Enhanced Managed Hosting Managed Hosting *New!* ---------------------------- -------------------------- -------------------------- -------------------------- Client Managed - AT&T Provides - Fully managed Hosting Component Level environment with event Management correlation across network, system and applications ---------------------------- -------------------------- -------------------------- -------------------------- Servers - Customer Managed - Component Level SLAs - Transaction Level SLAs Databases ---------------------------- -------------------------- -------------------------- -------------------------- Hardware/Software - Optional Component - AT&T Manages - Operational processes Monitoring Standard Vendor "Off supporting transactional the Shelf "Applications level SLAs ---------------------------- -------------------------- -------------------------- -------------------------- WAN/LAN Management - Optional Component - AT&T Obtains Root - Application Due Diligence Management Access required to plan, design, deploy and manage an end to end environment ---------------------------- -------------------------- -------------------------- -------------------------- Hosting - Customer Maintains - Portal Service - Portal Service Data Centers Root Access ---------------------------- -------------------------- -------------------------- -------------------------- Network Services ---------------------------- -------------------------- -------------------------- -------------------------- Client Managed AT&T Managed AT&T Enhanced Managed ---------------------------- -------------------------- -------------------------- -------------------------- (Slide #12) Global Enterprise Services Shift of Value Proposition in Customer Driven Architecture AT&T as AT&T as Integrated Integrated Supplier Supplier Americas Europe Asia/Pacific International Services: AT&T Retail Services/Applications - Managed Data Services and Solutions (GEMS) - Hosting/Co-Location - IP Data - FR/ATM Data - Voice Applications Transport: Target Agreements/AT&T Purchases of Capacity - Commercial Arrangements - Barter/Swaps - Co-Build - Equity Participation (Slide #13) [Graphic of AT&T Logo]