1. IDATE Conference Nov 19 th – 21 st 2003 TSI Network Consolidation Offering Jody Craft T-Systems International EVP, Product Management IP

2. TSI Network Consolidation Offering Market Trends. Source: DETECON 05/03, Gartner 06/02, IDC, OVUM 09/02, EITO 2003,Pyramid 02/03,GfK Two digits growth rates: IP services, Mobile services, Hosting services Worldwide Retail-Market: 2003-2006 0 50 100 150 200 250 bn € Business Voice Legacy Data IP Solutions Mobile Solutions Hosted Services CAGR 2,0 % CAGR 1,1 % CAGR 11,6 % CAGR 41,3 % CAGR 23,5 %

4. The Traditional Approach Today: Different network applications have different communication requirements. network platforms Headquater Home- Office Branch Office Production Site Internet/Intranet Leased Lines/ ATM-PVCs Public Telephony

5. TSI Consolidated Infrastructure Approach Peering Routers Internet Partners Remote Users Site x C ASP/eMarket Services C Peering Routers Internet Services Hosting Services C e-Service Area MX Cache/Proxy Collaboration UMS, VoIP MX-Relay FW, VW, IDS, Cont.Sec. Web, DNS Firewall services PSTN GSM Dial PoP Dial In Services Site B Site A Voice Services CoS CoS Service Management Center (SMC) VPN Services MPLS PSTN

6. T-Systems e-Service Area The MultiCustomer eSA provides the infrastructure for solution modules. Firewall servers Authentication servers Unified Messaging server Mail servers Internet web server Intranet web server B2B exchanges (extranet) hosted corporate applications Intranet shop solutions (MyCSM) Internet shop solutions corporate mobile portals Voice services (ToIP) Hosted web applications Encryption services DSL access Mobile access Dial Access eService Area Intl. access DSL ATM concentrator Platform, Partner, ... IPLS PSTN/ GSM Internet IP2 other

8. TSI Customer Network Consolidation Strategy Value Proposition: Cost Reduction Cost Reduction Roadmap I (Example) Cost CoO 2 : Router Management Additional Feature: Standard web services, Portals, BPO S2M PSTN Access CoO 2 : Internet Security & Remote Access-Services CoO 2 : PABX, Voice Equipment, Servers CoO 2 : Web & Enterprise Application Servers Intranet Access Internet Access Leased Line / ATM / FR ITC Personnel Corporate Network Consolidation Additional Feature: Internet Access Additional Feature: Telephony over IP ITC Personnel ITC Personnel ITC Personnel ITC Personnel time CoO 2 : Cost of Ownership Process-Solution/Portals

9. TSI Customer Network Consolidation Strategy Value Proposition: Cost Reduction Cost Reduction Roadmap II (Example) CoO 2 : Router Management Additional Feature: Standard web services, Portals, BPO S2M PSTN Access Rental CoO 2 : Internet Security & Remote Access-Services CoO 2 : PABX, Voice Equipment, Servers CoO 2 : Web & Enterprise Application Servers Intranet Access Internet Access Rental Leased Line / ATM / FR IT Personnel Additional Feature: Internet Access Additional Feature: Telephony over IP IT Personnel IT Personnel IT Personnel IT Personnel Cost time CoO 2 : Cost of Ownership Process-Solution/Portals Unified IP MPLS platform replaces dedicated IP, ATM and Leased Line Infrastructure: Reduced access cost Corporate Network Consolidation

10. TSI Customer Network Consolidation Strategy Value Proposition: Cost Reduction Cost Reduction Roadmap III (Example) CoO 2 : Router Management Additional Feature: Standard web services, Portals, BPO S2M PSTN Access Rental CoO 2 : Internet Security & Remote Access-Services CoO 2 : PABX, Voice Equipment, Servers CoO 2 : Web & Enterprise Application Servers Intranet Access Internet Access Leased Line / ATM / FR IT Personnel Corporate Network Consolidation Additional Feature: Telephony over IP IT Personnel IT Personnel IT Personnel IT Personnel Cost time CoO 2 : Cost of Ownership Process-Solution/Portals Multiple decentralized internet access lines are integrated into the corporate IP MPLS core: Reduced access cost and optimal security Additional Feature: Internet Access

11. TSI Customer Network Consolidation Strategy Value Proposition: Cost Reduction Cost Reduction Roadmap IV (Example) CoO 2 : Router Management Additional Feature: Standard web services, Portals, BPO S2M PSTN Access Rental CoO 2 : Internet Security & Remote Access-Services CoO 2 : PABX, Voice Equipment, Servers CoO 2 : Web & Enterprise Application Servers Intranet Access Internet Access Leased Line / ATM / FR IT Personnel Corporate Network Consolidation Additional Feature: Internet Access IT Personnel IT Personnel IT Personnel IT Personnel Cost time CoO 2 : Cost of Ownership Process-Solution/Portals On-net telephony integrated into the corporate IP core: Only one access line per site, cost effective IP-Telephony Additional Feature: Telephony over IP

12. TSI Customer Network Consolidation Strategy Value Proposition: Cost Reduction Cost Reduction Roadmap V (Example) CoO 2 : Router Management S2M PSTN Access Rental CoO 2 : Internet Security & Remote Access-Services CoO 2 : PABX, Voice Equipment, Servers CoO 2 : Web & Enterprise Application Servers Intranet Access Internet Access Leased Line / ATM / FR IT Personnel Corporate Network Consolidation Additional Feature: Internet Access Additional Feature: Telephony over IP IT Personnel IT Personnel IT Personnel IT Personnel Cost time CoO 2 : Cost of Ownership Process-Solution/Portals Integration of standard and dedicated hosting solutions: Only one access line per site, reduced server cost. Additional Feature: Standard web services, Portals, BPO

14. The tailored modul for every request for Hosted Services: Hosted Services opens the view to horizons. Solid and flexibel. Telecomunication Services Structure Application Hosting : eCommerce, Datenbanken, E-CRM, Intranet/Internet Provider Services ERP, e-Learning, Terminal-, Web-Server, Content Mgnt.., e-Service Area Basic Web Hosting: (Hosting-Area) Managed Hosting Services, Messaging, Storage, eMail, Housing (Colocation) Security-Module Administration-Moduls IP-VPN (as platform) IP-based virtual privat network Collaborative Services: Mobil Portals Exchange Services, Business Process Services

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16. Forecast: Europe’s Managed Network Services Market, 2003 To 2008 Source. Forrester Research, 2003

17. IP Services – IP VPN based on MPLS IntraSelect MPLS - Coverage Telekom owned Network infrastructure – core network MPLS-enabled IP network since 2003 with 53 countries and more than1000 PoPs (excl. Germany)

19. IP Services – IP VPN based on MPLS Customer applications  Needs for higher bandwidth in companies through the increasing use of ERPs (SAP, Siebel, Citrix etc.) Bandwidth Requirements High Low Low High Web-based Apps Voice Medical Telemetry Video Conferencing Latency Sensitivity AGILE SMTP Mail HTTP Web Microsoft Exchange

20. IP Services – IP VPN based on MPLS CoS vs. applications LOTUS NOTES LAN2LAN MFG PRO LAN2LAN MICROSOFT EXCHANGE ACCESS MIMI (SAP) INTERACTIVE NA4 LAN2LAN NOVELL GROUPWISE LAN2LAN ORACLE INTERACTIVE PEOPLESOFT INTERACTIVE PIN LAN2LAN SAGA LAN2LAN Application CoS Profile ACSIS (SAP) INTERACTIVE AGILE ACCESS BAAN INTERACTIVE CADENZA LAN2LAN CLARIFY INTERACTIVE CERES LAN2LAN CFMS LAN2LAN CITRIX INTERACTIVE CODA LAN2LAN Application CoS Profile DOCUMENTUM LAN2LAN ENERGY SYSTEM INTERACTIVE FIN WEB ACCESS FRIGATE LAN2LAN FTP ACCESS HTTP WEB ACCESS I2 DEMAND PLANNER LAN2LAN IS LOGISTICS INTERACTIVE JD EDWARDS INTERACTIVE

21. IP Services – IP VPN based on MPLS CoS vs. applications SALES/SERVICES EDGE LAN2LAN SAP INTERACTIVE SCALA LAN2LAN SIEBEL 2000 INTERACTIVE SIEBEL 7 INTERACTIVE SMTP ACCESS TELNET Interactive VANTIVE INTERACTIVE Application CoS Profile

24. IP Services – IP VPN based on MPLS IntraSelect MPLS: One Platform – Many Benefits. Site Backup and Redundancy Telecommuter Services Internet Access Integration Flat-rate pricing Encryption Services via Internet & VPN Intranet Hosting/Co-loServices Secure off-net Access Firewall Services Traveler Services IP Telephony Integration 56k – 155M bandwidth 53 countries 4 Classes of Service Dynamic routing Multiple VPN service Dial in via Internet & VPN Voice VPN’s Unified Communications Private Content Services Managed Extranet Services ASP Services E-commerce End-to-End SLA’s Virtual ISP Services Video Services (Multicast) Web based reporting

25. Forecast: Europe’s Managed Network Services Market, 2003 To 2008 Source. Forrester Research, 2003

26. Market Trends and development The trend goes to outsourcing and managed IP services! Source: EITO 2003,Pyramid 02/03 2003 2006

27. T-Systems e-Service Area Firewall servers Authentication servers Unified Messaging server Mail servers Internet web server Intranet web server B2B exchanges (extranet) hosted corporate applications Intranet shop solutions (MyCSM) Internet shop solutions corporate mobile portals Voice services (ToIP) e-Service Area Internet (Web)applications Encryption services IP VPN PSTN / GSM Internet