1. IRT Packet Data Roaming Working Group Update December 1, 2005

2. www.cdg.org 2 Task Force Charter Charter –The Packet Data team has been formed as part of the CDMA Development Group’s International Roaming Team (CDG IRT) to make technical recommendations to the CDMA community on packet data roaming issues. This team will endeavor, where ever possible, to standardise the recommended implementation of CDMA Data networks to assist with CDMA Packet Data roaming. Purpose/Goals: –Report to CDG International Roaming Team plenary quarterly –Make technical recommendations for CDMA community relation to packet data services –Develop documents to support recommendations for implementation of CDMA packet data services to support packet data roaming

3. www.cdg.org 3 Review of Activity Conference Call 10/25/05 –Established Charter and Priorities –Priorities = Network compatibility (long and near term), finishing current document initiatives Conference Call 11/11/05 –Reviewed compatibility issues and matrix Face-to-face meeting 11/29/05 –Discussed compatibility issues –Agreed on recommendation for future convergence –Review Correlation-ID issue

4. www.cdg.org 4 Existing IRT Document Initiatives Packet Data Roaming Checklist CDG Document #122 (pending publication) CDMA International Roaming Partner Qualification Form CDG Document #123 (pending publication) CDMA International Roaming Agreement CDG Document #44 (published) Packet Data Technical Data Sheet CDG Document #124 (under development) Packet Data End to End Test Plan CDG Document #121 (under development) Packet Data Billing Test Plan CDG Document #XX (under development) CDMA Packet Data Roaming eXchange Guidelines Version CDG Document #94 (published) Wireless Data Roaming Requirements and Implementation CDG Document #79 (published) * All available at www.cdg.org

5. www.cdg.org 5 PD Roaming Process Flow/Documents

6. www.cdg.org 6 Process Flow

7. www.cdg.org 7 Required CDG IRT Documents

8. www.cdg.org 8 Working face-to-face 11/29/05 Almost 30 attendees Good operator attendance Collaborative approach with good discussion Appears to be an affective working model Plan to have more in the future

9. www.cdg.org 9 Output: Recommendation for Convergence “The long-term target architecture for CDMA packet data roaming should be Mobile IP” Near-term solutions still required No target timeline yet established Recognized that it will require lots of work on the part of some operators Plenary need to evaluate recommendation

10. www.cdg.org 10 Matrix of combinations SIP ONLYL2TP AVAILMIP ONLY SIP NO ISSUESOLUTION AVAILABLE NO SOLUTION, BUT NO KNOWN INSTANCES L2TP SOLUTION AVAILABLE BASED ON L2TP REQ. NO ISSUENO SOLUTION, BUT NO KNOWN INSTANCES MIP NO SOLUTION IDENTIFIED NO ISSUE Device Serve Network The following matrix identifies incompatibilities “Device” indicates the technology preferred by the roaming device “Serve Network” indicates the network technology available in the visited operator’s network

11. www.cdg.org 11 Output of meeting We’re making good progress, BUT –We’re still solving “tip of the iceberg issues” For Mobile IP convergence we haven’t yet addressed: –Handset requirements –Network requirements Need to solve short-term issues associated with matrix –Describe current challenges with unsolved issues –Document #79 is probably right place for this work

12. www.cdg.org 12 Output of meeting, cont. Need to work on simplifying operational issues Agree on timeline for convergence (3 – 5 years?) When do we stop working on Simple IP solutions?