1. Colombo, Sri Lanka, 7-10 April 2009 FORUM ON NEXT GENERATION STANDARDIZATION (Colombo, Sri Lanka, 7-10 April 2009) Session Moderator Ghassem Koleyni An Implementable NGN Architecture, and its Capabilities

2. Presentations and presenters Session 4P1: Technical challenges in building the NGN - NTT’s activities (Mr. Tatsuro Murakami, NTT, Japan) Session 4 P2: Requirements and capabilities for an evolving NGN infrastructure (Mr. Marco Carugi, Nortel, France) Session 4 P3: An implementable NGN architecture and its capabilities (Mr. Tilak De Silva, Sri Lanka Telecom, Sri Lanka) Access networks for NGN implementations Session 4 P4: Access networks for NGN implementations (Mr. Bharat Bhatia, Motorola, India) Session 4 P5: Converged Service Network (Mr. Mingdong Li, ZTE, China) Colombo, Sri Lanka, 7-10 April 2009 2

3. Session 4 objectives Discussion on the standards-based, implementable NGN architecture considering Overall functional architecture of an implementable NGN architecture Functional architecture for supporting mobility and realization of FMC environments Architectural view points of “Quality of Services” and “Network Performance” to meet NGN service requirements from users and providers Relevance of IPV6 for NGN transportation NGN Access Networks Colombo, Sri Lanka, 7-10 April 2009 3

4. 4 Highlights and proposals from Presentation 1 Technical challenges in building the NGN - NTT’s activities NTT has been experimentally investigating VoIP using SIP for a long time. Selected SIP to promote broadband services. Mandated to have low interconnection charge LLU (Local Loop Unbundling) Selected overlay to create a new service structure and increase ARPU NTT believes that NGN brings both Network Innovation and service innovation. Phasing out PSTN after 2010

5. Colombo, Sri Lanka, 7-10 April 2009 5 Highlights and proposals from Presentation 2 Requirements and capabilities for an evolving NGN infrastructure IMS as central component in NGN Key architectural challenges Application-driven QoS Mobility Scalability Mobility: a fundamental enabler of NGN The multiple dimensions of convergence Convergence of services, service platform, networks, devices, management Interoperable Identity Management solutions are required Connectivity-oriented vs Service-oriented Interconnect Both will co-exist, addressing different markets

6. Highlights and proposals from Presentation 3 An implementable NGN architecture and its capabilities Today’s network vertically integrated: TDM Tx Back Bone (PSTN / ISDN, TDM Data network, CDMA Network), IP / MPLS Back Bone, Metro Ethernet Network Future network (i.e. NGN) IP / MPLS Back Bone (NGN /IMS), TDM Tx Network (CDMA Network) Reasons for migration End of life cycle, end of signaling support for R2, customer demand for new features Why going to NGN? High system capabilities (Call handling, subscriber capacity, traffic handling, etc…..) Availability of new services. (Unified messaging, IP Centrex/Hosted PBX, etc…) More cost effective (i.e. Less CAPEX ) Step-by-step approach to ALL IP & FMC TDM → ALL IP; ALL IP + Voice (soft switch); ALL IP + Multimedia (IMS); ALL IP + FMC Colombo, Sri Lanka, 7-10 April 2009 6

7. Access networks for NGN implementations Highlights and proposals from Presentation 4 Access networks for NGN implementations Today: Access Network  Device  Service  Application Tomorrow: The NGN access technologies Providing all IP transport India is going wireless with subscribers increasing at the rate of 10-15 Million per month WiMAX & LTE Makes On-Demand Possible WiMAX & LTE provide Faster, more responsive, lower cost, added capacity, flexible and global accessibility WiMAX & LTE are Accelerating the delivery of media experiences (Broadband everywhere, Optimized networks, Content to the consumer ) Colombo, Sri Lanka, 7-10 April 2009 7

8. Highlights and proposals from Presentation 5 Converged Service Network Current situation of service ecosystem Integration of the value chain Decrease of revenue from consumers and enterprises High CAPEX/OPEX Issues related to charging Trends in service evolution Mobility across fixed and mobile networks Convergence (Terminal, network, service, resource aggregation) UGC and UGS Next generation service creation environment Key issues Identity Management (Global ID) Service, Capability, Resource Addressing Open service framework Intelligent Policy decision and network adaption Data mining Colombo, Sri Lanka, 7-10 April 2009 8

9. 9 Conclusions / Recommendations Majority of current networks are vertically integrated. This needs to be changed. NTT has decided to phase out PSTN by 2010 and moving to NGN Application-driven QoS, mobility and scalability are major challenges which need attention in evolving the NGN Convergence is needed for services, service platforms, networks, devices and management services WiMAX & LTE provide Faster, more responsive, lower cost, added capacity, flexible and global accessibility Some key issues for convergence service framework need to be addressed in standardization