2. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future Jonathan Rosenberg Chief Scientist

3. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future The Genesis of SIP Impetus Behind SIP How to invite users to mbone sessions Timeline 1996Mark Handleys SIP and Henning Schulzrinnes SCIP 1996-97Interest grows in academic circles 1998Commercial interest arrives --MCIs Henry Sinnreich sees it as doing VoIP the Internet Way 1999IETF issues RFC in February 1999-00Exponential increase in interest and support from service providers and systems vendors

4. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future SIP: Its Heritage Implementability is Paramount (IETF in General) KISS Consider the Big I (Internet) Do Not Dictate Architectures or Services General Purpose Functionality Leverage the Best of Existing Standards URLs MIME RFC822 Scalability

5. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future SIP Today Exponential Growth and Momentum, Based on... Vendor implementations Service provider interest Interoperability success (4 SIP Bake-Offs) Standards body acceptance Strong media awareness Continued IETF activity

6. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future SIP Implementations dynamicsoft MCI Worldcom MediaTriX pingtel Telogy Networks Mitel Nortel Networks Nuera HP Invent RaveTel Vovida Networks Ericsson Indigo IPCell 3Com Netergy Networks (formerly 8x8) Agilent Broadsoft Catapult Cisco Columbia University Delta E-Club Helsinki University

7. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future 100 50 0 Number of Attendees Ericsson SIP Accepted By IETF 8 Companies 16 Companies 33 Companies Bakeoff Results Showcase SIP Momentum March 1999 April 1999 December 1999 August 1999

8. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future December 99 Bake-off Results 28 Vendors, Over 100 People Most Major Equipment Vendors Complex Call Scenario 7 different vendors dynamicsoft is the only commercial vendor capable of executing main proxy function Includes Proxy-authorization TCP to UDP CANCEL Record Route Reverse BYE TCP Proxy 1 Proxy 3 User Agent 2 Proxy 2 Proxy 2 Proxy 3 User Agent 1 User Agent 4 User Agent 3 User Agent 2

9. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future SIP Adoption by Key Standards Bodies IETF First to recognize SIP (March 1999) ITU SG11 working on PINT SG16 exploring SIP-H.323 interworking ETSI Tiphon Made request to host a SIP Bake-Off Held SIP BoF IMTC SIP Working Group formed May host SIP interop events at Supercomm

10. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future SIP Adoption by Key Standards Bodies cont. International Softswitch Consortium SIP Working Group already SIP-T focus of effort JAIN SIP Working Group developing Java APIs

11. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future SIP Solutions Can be Deployed In... Traditional Telcos Next Generation Telcos ISPs Cable IP Providers Wireless Communication ASPs Portals

12. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future SIP Momentum If you are responsible for building products in the VON industry, you will be making a major mistake if your plans for 2000/2001 don't include support for SIP Jeff Pulver - The Pulver Report, October 1999 Based on these criteria, the IETF's SIP (Session Initiation Protocol) looks like the winner in the voice over packet service creation race. David Willis - Network Computing, September 1999

13. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future Why the Excitement Surrounding SIP? Fundamental Benefits Services Scalability Services Interoperability Services Extensibility Services And services

14. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future Extensibility Primary Goal: Ensure Baseline Operation Always Works Maintain backward compatibility Optional Features Can be safely ignored by recipient Client Mandating Features Require header in request Unsupported header in response if incompatible Client can resend request Server Mandating Features Require header in response Supported and unsupported header in request

15. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future Extensibility cont. Feature Naming IANA registered com.microsoft.featurefoo naming New Methods UAS rejects requests with unknown methods Allowed methods are listed Does not affect proxy functionality New Bodies Use MIME header techniques to indicate those which are acceptable Experimental Headers Use X-convention

16. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future Scalability Internet Model for Scalability Fast and simple in the core Smarter towards the periphery Example: RSVP vs. Diffserv SIP Uses Internet Model Stateless fast proxies in the core Stateful proxies at the periphery Call-stateful proxies at the edge CSF Proxy Edge Periphery Core SF Proxy SF Proxy SF Proxy SF Proxy SL Proxy CSF SF SL Call Stateful Stateful Stateless

17. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future IP Telephony: Current Landscape Toll-bypass has Been the Primary Motivation Cheap long distance Service transparency Cost Differentials are Rapidly Disappearing Long distance is now at 5 cents a minute Partial flat rate plans are being rolled out Canadian service providers have moved to a complete flat rate structure Service Transparency is a Distant Goal QoS issues 911, 1000 features in the 5ESS Huge global penetration of black phones

18. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future The Question Of Customer Value If IP Telephony Service is Not Cheaper, Better or Different, Why Purchase It?

19. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future The Answer IP Telephony Enables Innovative New Services Created by Combining Applications Web Email Chat Presence The Killer App for VoIP Lives Within These Combined Services

20. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future Voice Voice + Web Voice + Web + Email Voice + Web + Email + Presence Combined Services Enable Service Provider Differentiation Integrating Applications Yields Exponential Services Growth Service Provider Differentiation Flows Naturally from This Applications Diversity Combined Services

21. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future Call Park to Web Call Park PBX/Centrex service Service definition Place user on hold, dial number, hang up Retrieve waiting call from new extension Problem: UI is difficult to use Call Park to Web Place user on hold by clicking Park to Web Browse parked call page from different terminal Click on link to pick up call Terminal can be located anywhere ( 4) Pick Up Call (1) Hold (2) Park to Web (3) Browse Web Calls Original Calling Terminal Called Party Web/App Server New Picking-Up Terminal

22. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future How SIP Enables New Services Fundamental Strengths SIP leverages the power of HTTP, SMTP It therefore, works well with these applications Technical Proof Points URIs for addressing MIME for body transfer SMTP for message routing concepts

23. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future The Future of SIP Development SIP is Laying the Groundwork for a Services Renaissance Increasingly used for applications Extensions being developed to provide small but powerful feature-lets to build applications Caller preferences Please-INVITE Work on Programmability Accelerates Use web models, not telco models CGI, CPL, Servlets

24. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future The Future of SIP Development cont. Integration with Legacy Systems Outlines a Deployment Path SIP-T Packetcable DCS efforts SIP-H.323 interworking SIP call model mapping Key is to preserve SIP model and semantics

25. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future The Future of SIP Development cont. Supporting Infrastructure Will be Built Integration with QoS mechanisms Management - MIBs Accounting and billing Security Faster Pace of Vendor Product Announcements Throughout 2000

26. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future The Future of SIP Development cont. First SIP Deployments 3Q 2000 Large-scale Deployments Throughout 2001 Who Will Deploy First? The answer may be surprising

27. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future Conclusions SIP is Growing Exponentially Combined Services Represent the Killer App for SIP Killer Services Will Integrate Elements of Web; Email; Presence and Voice Early indicators: Internet Call Waiting, Presence for Voice Chat and Click to Dial Real SIP Networks are Now Being Developed

28. www.dynamicsoft.com U N L E A S H I N G A S E R V I C E S R E N A I S S A N C E SIP 2000-05-10-00 SIP: Past, Present and Future Information Resource Jonathan Rosenberg jdrosen@dynamicsoft.com +1 732.741.7244