2. 1 NGN Evolution & its Overview

3. Desire for a new platform: User requirements increased — MORE BANDWIDTH Technology growth — INTELLIGENT NODES, SWITCHES Fast & reliable exchange of information— HIGH TRANSMISSION SPEED 2 New Services Evolution Arrival of new Telecom services, fast packet switching and enhanced VVD laid the foundation of a New Generation of Networks or NGN for new generation of services

4. NGN is Voice Over IP, bypassing the regular switches to save the investment on Switches and Trunks. NGN is Network Convergent Technology, combining wireline (PSTN), wireless (GSM, CDMA and 3G) and packet data network together, for Integrated Voice, Data and Multimedia Services. NGN is a Flat Telephone Network over Packet Data Network, instead of traditional Hierarchy structured telephone network with reduced investment. 3 What Is…

5. 4 Why NGN Increased demand for bandwidth is not possible through existing PSTN. Requirement for new services. Telecom operators want to reduce the OPEX and CAPEX (Need one common network for all services). Future proof network to handle Voice, Data and Multimedia. Optimising and simplifying transmission links.

6. 5 NGN - Drivers Next Generation Networks Operation Cost competition QoS configurability & verification Meet capacity On-demand request Rapid introduction of new technology Voice/Data and wire/wireless integrated management Interoperability: Multi-vendor equipment Rapid introduction of new technology Voice/Data and wire/wireless integrated management Interoperability: Multi-vendor equipment Demands for new services Diversity in Technologies Cope with IP & mobile environment

7. 6 IP/MPLS Multi-Service Bearer NGN Core Network VIDEO VOICE DATA Copper Optical Wireless PSTN GSM/CDMA Public Data Network CATV SERVICE ACCESS VOICE data VIDEO VOICE Legacy Networks & NGN Legacy Networks were dedicated and isolated networks with service specific signaling and routing for service connection Limited Broadband and Multimedia services High OPEX High Service cost Long Service provision time Inefficient O&M Too many sites, too many types of nodes Outdated and aged Exchanges NGN has a common IP core and provide nomadically accessible IP applications regardless of a specific access link or user device Provide integrated services instead of limited service Centralized management and simple network structure, reduce OPEX OPEX Saving from reduction of transmission, room space, O&M center, etc. Realize the fast and cost effective new service deployment. Pave the way to all-IP network

8. 7 Voice and Data Networks

9. 8 Distributed Model MG IP SoftSwitch IP H.248/MGCP H.323/SIP TDMTDM TDMTDM Packet Network Application Servers O&M Charging IP Phone Centralized Model Call Control Line Card Trunk Card Time Slot Switching TDMTDM O&M Charging POTS Phone Basic & Supplementary Telephony services Centralized vs Distributed Architecture

10. 9 Harmonization through Standardization

11. Characteristics of NGN Packet-based transfer Separation of control functions among bearer capabilities, call/session, and application/ service Decoupling of service provision from network, and provision of open interfaces Support for a wide range of services and applications Broadband capabilities with end-to-end QoS 10

12. Characteristics of NGN Interworking with legacy networks via open interfaces Generalized mobility Unrestricted access by users to different service providers Converged services between Fixed/Mobile Compliant with all Regulatory requirements, for example concerning emergency communications and security/privacy, etc 11

13. 12 Structured network architecture, smooth evolution, variety of services available Rapid Service provisioning Cost-effective multi-service access One IP based multi-service bearer network Retain/expand customer base and increase ARPU (Average Revenue Per User) FMC-Fixed Mobile Convergence Synergy IMS Ready NGN Solution Benefits

14. OPEX Savings Reduction in number of Switching nodes and transmission links Replacement of obsolescent equipment with new generation IP Solutions Lower OPEX for new NGN nodes: easier network re- engineering, less power consumption, less space needed CAPEX Savings Pay as you grow for Network expansion 13

15. 14 Signaling Module Trunk Module User Access Module Service Server SoftSwitch Trunk Gateway Trunk Gateway Trunk Gateway SS7 Signaling Gateway Contrast between PSTN and NGN User Access Gateway CPU Switching Array Intelligent Service Server IP Core

16. 15 PSTN End-Office Optimization and Reconstruction Solution