1. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 1 A Perspective on VoIP: Where we are Today and the Challenges for Tomorrow Jonathan Rosenberg Cisco Fellow

2. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 2 A Long Road 70s and 80s Early to Mid 90s Late 90s to Early 00 Mid 00 to Now

3. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 3 Today: Enterprise 4.3M IP phones shipped 1Q07 63.8% of the PBX market in 1Q07 was IP Vast majority of phones on peoples desk still TDM 4.3M 1Q07

4. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 4 Today: Service Provider Huge growth in Cable voice – millions of lines in U.S. Millions of customers in the ASP market – Vonage, Broadvoice, etc. Essentially zero VoIP endpoints for wireless Vast majority of Endpoints still TDM

5. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 5 What Challenges Lie Ahead? Federation Interoperability Emergency Services SPAM

6. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 6 Federation Today PSTN Enterprise A Branch 1 Branch 2 Cable Provider Region 1 Region 2 ASP

7. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 7 What are the Barriers to IP Federation? Routing QoS Troubleshooting Presence and IM Scale Security SPIT Firewall and NAT Traversal Protocol Interop

8. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 8 Interoperability The Confusion of Tongues – DTMF – Codecs – Security – IM – Advanced Features

9. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 9 Example: CPL Here is my CPL Script for Call Forwarding I provide CF, set up Via XCAP. What is this CPL thing?

10. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 10 Emergency Services Individual to Authority: 911 Authority to Individual: Warnings Authority to Authority: Communications

11. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 11 Individual to Authority Location Determination Location to Emergency Call Center Mapping Location Conveyance Emergency Call Determination Mid-Call Services

12. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 12 The Real Problem: Separation of Roles Knows Location Needs Location ?

13. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 13 Spam Email VoIP

14. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 14 SPAM: Two Step Approach People You Know: Whitelists + Strong Identity + People you Dont: The Introduction Problem

15. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 15 Candidates for the Introduction Problem Content Filtering Consent Reputation Address Obfuscation Captchas Computational Puzzles Payments At Risk Limited Use Addresses

16. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 16 Conclusion

17. © 2006 Cisco Systems, Inc. All rights reserved.Cisco ConfidentialPresentation_ID 17