Ensuring the Readiness of Next Gen Multimedia Applications & Services Pierre Lynch Director of Wireless and IMS Ixia

Agenda Discussion of IMS issues and concerns Recommendations What they are How they affect things Recommendations Conclusions

Distributed architecture AS SCIM HSS Application Layer S-CSCF BGCF I-CSCF MRFC MRFC Control Layer P-CSCF MRFP MGW MGCF PDF PSTN Transport Layer IP CAN

Multi-vendor solutions Subsystems Control Security Media HSS Handsets/Terminals L2/L3 More inter-vendor interfaces Interop becomes more important More at stake than just handsets

Multi-Level Security Platform Application IPSec Platform Firewalls IPSec/AKA Sub & Net Auth

Multiple standards bodies 3GPP TISPAN Packet Cable MSF 3GPP2 (MMD) More: security options policy control options admission control options

Data migration Common Subscription and Service information Migrating data to the IMS will be large task Testing the data migration Testing the changes Internet PSTN WiMAX/WiFi UMTS Cable cdma2000

Performance & Capacity Many elements: Application Individual Nodes Core Network User Experience Different measurement types All can impact each other !

? Technology Concerns QoS/QoE Security on Gm Sigcomp NAT/PT Dependency in the network Features must be supported here too Resource and admission control ?

Lucent views White paper: IMS Early Adopters: Lessons Learned Best practices: Selecting the Right Lab/Testing Strategy Lab 1: mirror the live environment Lab 2: mirror the future environment

Conclusions Architecture -> Flexibility -> Complexity Multitude of vendors Change -> Impacts Everywhere Test Changes before Deployment