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
MRF
IP
CS Networks
(PSTN, CS PLMN)
CSCF
P-CSCF
SGW
Application Server
AS
RAN
BG
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
VoiceMail
Unified
Messaging
Audio/Web
Conferencing
PrivacyScreening
Prepaid
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