1. SIP Interoperability: Leveling the Playing Field William Rich President & CEO Pingtel Corp August 2005

2. 2 Pingtel - SuperComm ’05, EntNet May 3, 2005 Why is SIP Interoperability important… …to vendors? - Fosters rapid development of new features - Simplifies customer support - Eliminates traditional market barriers …to service providers? - Allows competion based on innovation & service - Allows for standardized offers - Simplifies customer turn-up - Simplifies customer support

3. 3 Pingtel - SuperComm ’05, EntNet May 3, 2005 Why is interoperability important to customers? Offers investment protection Offers multi-vendor choice Improves user productivity with new innovation IT economics helps customers... …SAVES MONEY! …DRIVES INNOVATION!

4. 4 Pingtel - SuperComm ’05, EntNet May 3, 2005 Forces Driving SIP Interoperability Interoperability Standards Bodies & Industry Forums Service Providers Open Source Community Mobile Convergence

5. 5 Pingtel - SuperComm ’05, EntNet May 3, 2005 Forces Driving SIP Interoperability Interoperability Hardware Vendors Software Vendors Customers! The most important driving force?

6. 6 Pingtel - SuperComm ’05, EntNet May 3, 2005 How far have we come? SIP was first standardized in 1999 by the IETF with RFC 2543 In 2002, the IETF replaced RFC 2543 with RFC 3261 - The standard for today’s SIP devices and applications There have been 16 SIPit events since 1999 - Vendor participation continues to grow at a rapid pace SIP is now the defacto standard for telecom SIP along with VoIP has “Crossed the Chasm”

7. 7 Pingtel - SuperComm ’05, EntNet May 3, 2005 Timeline - Interop Challenges 2 years ago Basic calling features (transfer, hold) Conferencing and Codecs Last year Advanced calling features (call pick-up, call park) Attendant Console (DSS\BLF) Basic Calling All commercially available SIP phones and gateways support basic calling features in a multi- vendor environment User Registration All commercially available SIP phones can register with a SIP proxy server Solutions Now 3 years ago user or phone registration Challenges Then Advanced Calling Vendors are now rolling out Dialog Events Package to support advanced PBX features All generally required communications features are now supported in SIP

8. 8 Pingtel - SuperComm ’05, EntNet May 3, 2005 About SIPfoundry Global Open Source Community Focus: SIP Real-Time Communications Technology and Solutions Objective: Create in open source the tools & solutions to deliver integrated multi- media comms; freedom and ubiquity Founded:February 2004, www.sipfoundry.orgwww.sipfoundry.org Key Enabler For Innovation & Interoperability

9. 9 Pingtel - SuperComm ’05, EntNet May 3, 2005 VoIP today: Proprietary Proprietary hardware Proprietary feature islands As expensive as TDM As inflexible as TDM Email: A hosted service Ubiquitous with global reach Hosted IT service Plug & play standard SIP Integrated into the Internet SIP TCP / IP Defining Vision - VoIP Should Be Like Email

10. 10 Pingtel - SuperComm ’05, EntNet May 3, 2005 User Agent – softphones & SDKs sipX – Enterprise SIP “PBX” & Proxy repro – Carrier class SIP Server & Proxy Key Projects SIP Forum Test Framework – open source SIP compliance testing

11. 11 Pingtel - SuperComm ’05, EntNet May 3, 2005 SIPfoundry Activities Rapid Community Growth

12. 12 Pingtel - SuperComm ’05, EntNet May 3, 2005 Strong Industry Adoption

13. 13 Pingtel - SuperComm ’05, EntNet May 3, 2005 So what does this all mean? SIP has tremendous traction and is driving all future communications (Voice, Video, IM) SIP is no longer a “vendor idea”. Driven by customers now! SIP architecture is applying IT economics to telecom in today’s enterprise Levels the playing field for new market entrants

14. Thank You! Please stop to find out how you can get involved in open source SIP development!