Citigroup 12 th Annual Global Technology Conference September 7, 2005

1. Citigroup 12th Annual Global Technology ConferenceSeptember 7, 2005 John Leonard Vice President, Marketing & Offer Management Network Solutions Group

2. Forward-Looking Statement Disclosure This presentation includes some forward-looking statements about our expectations for our future performance. Actual results could differ materially from those suggested by our comments today. Additional information about factors that could affect future results are addressed in our SEC filings, including our Form 10-K, 10-Q, and 8-Ks. A summary is included at the end of this presentation. Lucent Technologies – Proprietary - Use pursuant to company instruction

3. Agenda • Service Convergence • IP Multi-Media Subsystem (“IMS”) • Lucent’s Converged Service Value Proposition Creating value through true convergence™ Lucent Technologies – Proprietary - Use pursuant to company instruction

4. Service Convergence Lucent Technologies – Proprietary - Use pursuant to company instruction

5. (908)582-8519 ID: P.Russo (908)582-8519 ID: P.Russo (908)582-8519 ID: P.Russo (908)582-8519 ID: P.Russo (908)582-8519 ID: P.Russo Consumers Expect Communications To Better Their Lives, Not Burden Them Consumers ask, “Is more really better?” Juggling multiple devices and filtering the flurry of useless v. useful information is cumbersome • Too many devices • Too much useless information • Not tailored for me Consumers require blended lifestyle services….personalized, content-rich, reliable, secure • Your TV/video anywhere, anytime you want it • Your secure home, mobile, or business voice services anywhere, anytime • Your secure home or business internet services anywhere, anytime • Your home or business PC is securely accessible anywhere, anytime • Your secure e-mail, IM, v-mail, video mail anywhere, anytime • Your phone book, buddy list, speed dial, contact lists unified and securely available anywhere, anytime Lucent Technologies – Proprietary - Use pursuant to company instruction

6. CapEx protection, OpEx reduction, standardization – with security and QoS/reliability “Own” the customer relationship and service experience - leverage the public trust in the brand and the company Value and leverage expertise and excellence in delivering the highest quality communications services in the world QoS, Security, Scalability, Personalization, Presence Enablement Deliver blended services to generate additional revenue streams and expand market share. “Bundling” will erode service value, “blending” will create value in the mind of the consumer. Services must be portable between Wireline/Wireless networks Key competitive differentiator via Cable/Satellite Addressing Key Service Provider Challenges and Imperatives Providers must build their own community with blended lifestyle services to win customer loyalty and establish new revenue streams Lucent Technologies – Proprietary - Use pursuant to company instruction

7. The Service Provider Opportunity… Business Market Consumer Market 10,000 10,000 Annual Revenues Annual Revenues 6,000 6,000 $ 8,000 8,000 Millions $ Millions 6,658 6,658 4,084 4,084 6,000 6,000 CAGR = 70% CAGR = 70% 4,000 4,000 4,000 4,000 2,000 2,000 2,000 2,000 805 805 494 494 0 0 0 0 2005 2006 2007 2008 2009 2009 2005 2006 2007 2008 Subscribers Subscribers 30.0 30.0 30.0 Millions Millions 21.6 21.6 Cumulative subs 19.2 19.2 Cumulative subs 20.0 20.0 20.0 20.0 New subs New subs 10.0 10.0 10.0 10.0 4.8 4.8 5.4 5.4 2.3 2.3 2.6 2.6 0.0 0.0 0.0 0.0 2005 2006 2007 2008 2009 2005 2006 2007 2008 2009 2009 Source: Strategy Analytics/Lucent Technologies, 8/05 US Revenues from Converged Services in the Business/Consumer Markets Will Reach $10B by 2009 Lucent Technologies – Proprietary - Use pursuant to company instruction

8. The Network Equipment Vendor Opportunity… ’06-’10 $9.8Bln ’06-’10 $6.5Bln ’06-’10 $8.0Bln ’06-’10 $6.0Bln Source: IDC, 8/05 By 2010 the WW IMS market for network equipment vendors will be worth in excess of $14Bln Lucent Technologies – Proprietary - Use pursuant to company instruction

9. IP Multi-Media Subsystem “IMS” Lucent Technologies – Proprietary - Use pursuant to company instruction

10. IMS is the Cornerstone of Next-Generation Services Convergence • IMS is a portfolio play, not a traditional “box” play • Differentiate based on depth/breadth of portfolio • Access-agnostic, carrier-grade, end-to-end IP/VoIP solution • Common core for both wireless and wireline networks • IMS value proposition • Economics: integrated services platform vs. disparate point solutions • Service transparency: Shared profile vs. replicated data for each application • Blended Services: IP core with softswitch-based control • Access-agnostic: Network identifies and accommodates any end-user device from any access network Lucent Technologies – Proprietary - Use pursuant to company instruction

11. IMS creates a new ‘user-centric’ paradigm in the communication industry… Pro-sumers on the go… • Users will define their own experiences, when they are reachable, and by whom • Users will have ubiquitous access to all their services – independent of devices and different network types • Users will have more control - to different user personae, profiles and to personalize information • The network will become more intelligent - capturing user context, location and more… Mobility Domain IMS enables a consistent user experience unifying domains, across different networks, user identities & applications Residential Domain Enterprise Domain At work… At home… Wireless Domain Working remotely… Lucent provides the next level of innovation for an enhanced end-user experience Lucent Technologies – Proprietary - Use pursuant to company instruction

12. IMS Architecture Enables Rich, Dynamic, Blended Services Multimedia Portals & Content VoIP Common Back Office Resources Simplified Converged Applications … Application • Session Control • Policy Management • Privacy, personalization • Single sign-on • Sharing of common data across applications Session Endpoints • Access Agnostic • Downloadable SIP client • Seamless mobility • Common user experience Converged services providers can build and launchservices faster, efficiently adapting to market changes Lucent Technologies – Proprietary - Use pursuant to company instruction

13. Unified Control Caller ID on TV Web on TV Voice Wireline Follow-me TV Video Gaming on Demand Wireless Follow-me TV Data Family Finder Data Network Control Video Network Control Data Subscriber Control Video Subscriber Control Providers Require a New Service Delivery Paradigm to Offer Blended Services: IMS Legacy Networks Rich, Personalized, Blended Services with IMS Legacy Networks For Voice Connections Voice Subscriber Control Voice Voice Network Control For Data Connections Wireline For MobileVoice Connections Data Wireless For VideoVoice Connections Third party Video • IMS provides unified control for dynamic management and provisioningto support all services - blended services • IMS sets stage for true Wireline and Wireless service convergence Lucent Technologies – Proprietary - Use pursuant to company instruction

14. The Lucent Value Proposition Creating value through true convergence™ Lucent Technologies – Proprietary - Use pursuant to company instruction

15. ApplicationLayer Operations Maintenance Center – Core Network Common domain manager simplifies management of next-gen network elements Applications Voice ContentServices PSTN Support Systems Operations, Maintenance, Fault Correlation, Billing Mediation, … Video Data Session Control Call/Session Control SessionControlLayer INTERNET SDHLR/HSS Profiles, AAA, SLF IP/MPLS Core Media &EndpointLayer IP Multiservice Edge Lucent Unified Subscriber Data Server Deployed / Reusing common platform for all user data with the SDHLR Optical Transport DWDM Lucent Session Manager Enhanced service broker and session control offering intelligent interface to apps & svc ULH SONET/SDH CMTS OLT 3G Mobile Data Center Access Networks DSLAM CMTS DSLAM OLT Consumer Enterprise LucentAccelerate™ Next Generation Communications Solutions IP-TDM Gateway Lucent Network Gateway Best-in-class gateway density; Common wireline/wireless gateway Lucent Technologies – Proprietary - Use pursuant to company instruction

16. Personal Simple Secure Portable Seamless LucentUnique IMS implementation Value over IP™ Voice A/V Streaming PTT Combo Phone IP PBX Gaming Presence Location Service & Network Management Software Applications Bell Labs Service Enhancement Layer Lucent SessionManager Unified SubscriberData Server Lucent NetworkController Lucent NetworkGateway SIP IMS Service Broker HSS/SDHLR Media GatewayControl Function MediaGateway MRFC CSCF BGCF SS7 Access Networks BroadbandResidentialAccess 3G MobileNetwork PSTN EnterpriseAccess Access Devices WirelessMSC Lucent’s truly differentiated IMS drives intelligence into the network to enable the delivery of lifestyle services to the end user Lucent Technologies – Proprietary - Use pursuant to company instruction

17. Application/Feature Server • Session Control • Media / End Points • HSS/HLRMiLIfePlatform • ISG • MiLifePlatform • MMPortal • FeatureServers • SessionManager • CompactSwitch • Network Controller • Network Gateway • Universal GW/5E-XC / Other GWs • TRIALS • DEPLOYEMENTS • NAR • EMEA • APAC • CALA Lucent’s 3Q IMS ScorecardAs of June 2005 Trials and Deployments Lucent Technologies – Proprietary - Use pursuant to company instruction

18. Lucent Market Ready Solutions • IPTV/IP Multimedia Solutions • Scalable, bundled video, voice and data services • Converged Ethernet Transport Solution • End-to-end Carrier Ethernet transport solution for triple play and IP VPN services • Transport for Wireless Service Providers • Evolve to an all IP transport solution while meeting cost and scalability challenges Lucent Technologies – Proprietary - Use pursuant to company instruction

19. Lucent Market Ready Solutions • Converged Voice for Enterprise & Consumers • Consists of WiFi – Cellular Integration and Circuit Mobile Extensions (CME) • Network Based Enterprise & Consumer VoIP+ • Business productivity & Lifestyle applications enabled by IMS • Multimedia Blended Services • Baseline set of IMS applications and enablers Lucent Technologies – Proprietary - Use pursuant to company instruction

20. Key Takeaways • Service provider strategies for providing converged services will differ, but end goal is the same: Expanding the telecom wallet by delivering new lifestyle services • IMS service-intelligent network enables seamless, dynamic delivery of blended services to end-users • Lucent is an industry leader in showing customers how to deliver Value over IP™ with new blended lifestyle services • Lucent is building leadership in “Value over IP” supported by our capability to bring to the market one of the industry’s most complete and ready implementation of IMS anchored by our Bell Labs differentiators Lucent Technologies – Proprietary - Use pursuant to company instruction

21. Forward-Looking Statement Disclosure This presentation contains forward-looking statements that are based on current expectations, estimates, forecasts and projections about us, our future performance, the industries in which we operate, our beliefs and our management's assumptions. In addition, other written or oral statements that constitute forward-looking statements may be made by or on behalf of us. Words such as “expects,” “anticipates,” “targets,” “goals,” “projects,” “intends,” “plans,” ”believes,” “seeks,” “estimates,” variations of such words and similar expressions are intended to identify such forward-looking statements. These statements are not guarantees of future performance and involve certain risks, uncertainties and assumptions that are difficult to predict. Therefore, actual outcomes and results may differ materially from what is expressed or forecasted in such forward-looking statements. These risks and uncertainties include: our ability to develop and deploy new or unproven technologies; fluctuations in the telecommunications market; our ability to compete effectively; our product portfolio and ability to keep pace with technological advances in our industry; our reliance on a limited number of key customers; our exposure to the credit risk of our customers; the pricing, cost and other risks inherent in our long-term sales agreements; the costs and risks associated with our pension and postretirement benefit plans; the social, political and economic risks of our foreign operations; our reliance on third parties to manufacture most of our products; our ability to generate positive cash flow; existing and future litigation; our ability to protect our intellectual property rights and the expenses we may incur in defending such rights; the complexity of our products; changes to existing regulations or technical standards; changes in environmental health and safety laws; and our ability to retain and recruit key personnel. For a further list and description of such risks and uncertainties, see the reports filed by us with the Securities and Exchange Commission. Except as required under the federal securities laws and the rules and regulations of the SEC, we do not have any intention or obligation to updatepublicly any forward-looking statements after the publication or distribution of this presentation, whether as a result of new information, future events, changes in assumptions, or otherwise. Lucent Technologies – Proprietary - Use pursuant to company instruction