2. www.imsexpo.com October 11-13, 2006 San Diego Convention Center, San Diego, CA IMS Deployment Experience Keith Bhatia Chief Business Officer IP Unity

3. www.imsexpo.com October 11-13, 2006 San Diego Convention Center, San Diego, CA Objectives Demonstrate how in a very short time IMS has moved from a standard/theory to actual applications Update on trials, applications, where IMS fits with convergence, key learnings Key Finding in various markets  Japanese priorities vs North America vs European  Key learnings and pitfalls

4. www.imsexpo.com October 11-13, 2006 San Diego Convention Center, San Diego, CA IMS-MGW IMS Architectural Overview SGSN GGSN UE IPv6 PDN (IPv6 Network) MGCF PDF I-CSCFS-CSCF Core Applications MRF IP CS Networks (PSTN, CS PLMN) CSCF P-CSCF SGW Application Server AS RAN BGBG IMS Session Signalling IMS User Plane Data HLR/AuC (‘CS/PS’) HSS ‘IMS Data’ SLF IPv4 PDN (IPv4 Network) IPv4 based Signalions IPv4 User Plane Data Voice Mail Unified Messaging Audio/Web Conferencing Privacy ScreeningPrepaid Sh ISC Dh IP Unity

5. www.imsexpo.com October 11-13, 2006 San Diego Convention Center, San Diego, CA Trial Observations Japan is ahead of all other markets Europe is ahead of N. America CALA just starting to get up to speed on IMS

6. www.imsexpo.com October 11-13, 2006 San Diego Convention Center, San Diego, CA Trial Observations We are in multiple trials and some deployments –12 trials, 5 deployments –MRFC and MRFP function and multiple applications have been IMS certified –Trials have validated our roadmap on Applications UM, Conferencing moving to Video –No killer application; seamless user experience across networks, access and services promises convenience, and carrier savings –QOS and Security becoming the major operational issues Softswitch vendors are still the anchor component –Integration and Interop issues are slowing deployments

7. www.imsexpo.com October 11-13, 2006 San Diego Convention Center, San Diego, CA Learnings from Trials and Deployments Here are the milestones met in the trials: –Key applications including Voice Mail, Unified Messaging, Conferencing, Privacy Screening, Find Me Follow Me in addition to our Mereon 6000 Media Server have been IMS certified by the trial carriers –In 2006, it has moved from trial to deployment with 5 Tier One carriers –These trials started in 2005, giving added momentum to our already ambitious IMS plans –Video, Security, Resiliency have proven to be critical for success in these trials

8. www.imsexpo.com October 11-13, 2006 San Diego Convention Center, San Diego, CA Challenges to IMS deployment HSS deployments Consolidation of the major players New models in rapid application deployment –Web based applications –Microsoft enterprise ambitions FMC – with WiFi/WiMax Inertia