Creating Business Solutions for the Mobile Enterprise

1. Creating Business Solutions for the Mobile Enterprise

2. Forward Looking Statements This presentation contains forward-looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These statements regarding Avaya�s expected performance and outlook for operating results are based on current expectations, forecasts and assumptions that involve risks and uncertainties that could cause actual outcomes and results to differ materially. These risks and uncertainties include, but are not limited to: price and product competition; rapid or disruptive technological development; dependence on new product development; the mix of our products and services; customer demand for our products and services, including risks specifically associated with the services business and, in particular, the maintenance and rental and managed services lines of business, primarily due to renegotiations of customer contracts and changes in scope, pricing pressures and cancellations; general industry and market conditions and growth rates and general domestic and international economic conditions including interest rate and currency exchange rate fluctuations; disruption associated with the re-alignment of our sales and marketing efforts; risks related to inventory, including warranty costs, obsolescence charges, excess capacity, material and labor costs, and our distributors decisions regarding their own inventory levels; the economic, political and other risks associated with international sales and operations, including increased exposure to currency fluctuations as a result of our acquisition of Tenovis; the ability to successfully integrate acquired companies, including Tenovis, which has required significant management time and attention; the ability to attract and retain qualified employees; control of costs and expenses; U.S. and non-U.S. government regulation; and the ability to form and implement alliances. For a further list and description of such risks and uncertainties, see the reports filed by Avaya with the SEC, which are available at www.sec.gov, particularly the information contained in Part II, Item 7, entitled �Forward Looking Statements�, of our fiscal 2004 Form 10-K and the information contained in Part I, Item 2, entitled �Forward Looking Statements�, of our Form 10-Q for the fiscal quarter ended March 31, 2005. Avaya disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise. � Presentation� Unless indicated otherwise, all results are presented in accordance with United States generally accepted accounting principles (GAAP).

3. Agenda The Mobile Enterprise Environment A Definition of Enterprise Mobility Fixed Mobile Convergence What is it? Enterprise Fixed Mobile Convergence Solutions The Future

4. Redefining Business Communications

5. Enterprises Are Increasingly Deploying IP Telephony Foundation for Enabling Flexible Applications and Services

7. The Environment

8. What is Enterprise Mobility ?

9. How Do We Work Today?

10. For Employees:Communications Out of Control

11. For IT Directors: Complex Environment

12. User Modes in the Mobile Enterprise Employees Transition Across Different Modes Through the Day

13. Needs of the Mobile Enterprise Vary WorldwideSolutions Must Adapt to These Different Environments

14. What Are The Solutions?

15. Solutions in the Mobile Enterprise Nowand In the Future - Many Employees Use Many Solutions

16. Avaya Enterprise Mobility StrategyTransparently extend business communications applications to mobile workers; securely, reliably, and with centralized intelligence and control

17. Enterprise Mobility: Benefits for End UsersOne Business Number, Your Chosen Devices Simplicity of user experience (one voicemail, one directory, one call log) Consistent user capabilities Control of business and personal communications Productivity transparent of work location

18. Enterprise Mobility: Benefits for IT DirectorsCentralized Intelligence and Control of Fixed and Mobile Communications Simplicity Leverage same business communications applications, IP telephony, and networks infrastructure Single reporting and accounting Consistent security and control policies Control of mobile devices and communications Transparency of mobile communications cost

19. Fixed Mobile Convergence

20. Drivers for Enterprise Fixed Mobile Convergence

21. Spectrum of Fixed Mobile Convergence SolutionsDifferent Solutions Required for Different Levels of User Needs/Capabilities

22. Avaya/Nokia Mobile for Series 60 Customer Feedback 100+ external users in more than 10 global trials (NAR, EMEA, APAC) Preliminary survey results: 89% satisfied with Avaya Mobile Client App met or exceeded expectations of 74% of users One number and flexibility equally ranked (74%) as features most liked

23. Avaya/Motorola Seamless Communications Solution 300+ users in 14 trials Solution is validated & ready for market Awaiting phone certification from service provider Challenges overcame: Minimize power drain Ensuring security Managing QOS over WLAN Ensuring a truly seamless experience No changes to cellular network Customer feedback Great productivity gains from One number, One vmail Improved customer service

24. What�s New in Enterprise Mobility in FY05? Avaya Expands Choices of Devices and Work Modes for Mobile Workers Voice Portal Validated solution Phase 1 Avaya Mobile for Series 60 cellular extension product GA Multi-vendor phones supported today

25. Enterprise Mobile Communications Transparently Extended to Mobile Users, with Centralized Intelligence and Control Avaya is leading the industry in Enterprise Mobility, with a holistic approach and a comprehensive product portfolio Our strategy is built on Avaya�s leading Business Communications Applications, focused on the enterprise We are investing to deliver innovative and differentiated solutions with world class partners We are focused on extending our market leadership Communications effectiveness is extremely significant � especially in those remote branch office scenarios which include highly trained, highly skilled branch associates managing important client relationships. Where the communications needs are complex and where there is a high degree of collaboration amongst associates both in the same branch office as well as between branches. Communications effectiveness is extremely significant � especially in those remote branch office scenarios which include highly trained, highly skilled branch associates managing important client relationships. Where the communications needs are complex and where there is a high degree of collaboration amongst associates both in the same branch office as well as between branches.

26. The Future

27. Futures: Mobility Still has Much Change to Come

28. Futures: Mobility Still has Much Change to Come Collaboration � centered around SIP bringing presence, voice availability, IM (desk and mobile), and email integration WiMAX � increasing bandwidth availability, simplifying roaming (campus and metropolitan), enabling VoIP growth IMS (IP Multi-media Subsystem) � will become core services platform for Service Providers, based on SIP will enable �simpler� integration of enterprise services with Service Provider � enriches Collaboration

29. �Enterprise-Enabled� Mobile Communications

31. Avaya Fixed Mobile Convergence Client Broadened device support Enhanced application capabilities

32. Enteprise Fixed Mobile Convergence Example:Avaya Mobile for Series 60 Avaya's Extension to Cellular integrates simply in Symbian phones Phones based on Nokia S60 2nd Edition Nokia 3230, 66xx, 7610 Panasonic X700, X800 Lenovo P930 Samsung SDH 720 Download the application from the web and install on phone !

33. Avaya Communication Manager Station Features Supported Enable/Disable Extension to Cellular Active appearance select Enable/Disable Automatic call back Call forwarding all Call forwarding busy/no answer Call forwarding deactivation Call park/unpark Call pick-up directed Block/Unblock Calling party number

34. What Can Enterprise FMC Give You ? Benefit 1: One Number - Work as if in Office Mobile phone functions as off-PBX bridged extension Mobile phone makes, receives, transfers calls through Avaya Communication Manager

35. What Can Enterprise FMC Give You ? Benefit 2: Transparently Move Between Work Modes

37. Group call pickup using mobile phone What Can Enterprise FMC Give You ? Benefit 4: Be Mobile on Campus

38. Reduce cost of mobile communications while on enterprise campus

39. Always Reachable Sales Force