1. Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

2. Agenda Why NGN NGN Basic Features Conversion Strategies towards NGN Standards & Regulations Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

3. Why NGN? User’s growing demands for enhanced multimedia services, integrated applications of real time traffic and high data volumes, high speed internet, video on demand, mobile communications, everywhere, all the time Need for advanced features of flexibility and reliability, unfettered access to competing providers and services, generalized mobility Existing switching, optical, satellite and wireless technologies must be integrated into high quality, distributed, multi-service networks – Fixed Mobile Convergence FMC Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

4. Agenda Why NGN NGN Basic Features Conversion Strategies towards NGN Standards & Regulations Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

5. Architecture & System Characteristics ITU-T Y.2001 Services become independent from underlying transport details Packet-based transfer (mainly IP) Horizontal configuration: From sausage to sandwich; each layer provides reusable elements to the other layers Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

6. Basic Architectural Building Blocks 1.Media Gateway ‘Translator’ between media formats of the access networks and the packet NGN 2.Call Server Control functionalities over the Media Gateway, supports AAA, routing and signaling, performance management and administration 3.Media Server Allows applications to interact with each other, responsible for compression, transcoding etc 4.Application Server Control, registration support, encryption procedures Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

7. Functionality Blocks 1.Transport stratum The first 3 layers of the traditional OSI 7-layer basic reference level are involved Data transfer (mainly IP), control and management of transport resources 2.Service Stratum Handles the applications to be operated between peer entities Provision of functions that transfer service-related data Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net Each stratum comprises one or more layers, where each layer is composed of a separate plane for data, control and management

8. Novel Services & Applications Leading IP features: collaborative interaction data retrieval online sales e-commerce remote control tele-action telemetry distant device management Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net Multimedia capabilities: content delivery video on demand video streaming video-telephony VoIP TV distribution TV broadcasting TV on demand audio / web / video conferencing

9. Advanced Characteristics advanced web browsing accelerated downloads broadband high speed internet bandwidth on demand QoS on demand triple play 3G applications VPN applications Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net push-to-talk push-to-view group chat instant messaging multiparty interactive gaming e-learning file sharing broadcast & multicast

10. Agenda Why NGN NGN Basic Features Conversion Strategies towards NGN Standards & Regulations Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

11. Need for Evolution NGN proper deployment calls for a carefully planned conversion strategy. The new network has to be highly adaptive. Acceptance and interoperability must be guaranteed before the market takes the risk to invest into NGN. During the transition period, NGN must allow for a mix of conventional circuit switched communication services and future IP services. Compliance with regulatory requirements and standardization norms is prerequisite. Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

12. Migration procedure (I) The migration procedure will comprise consolidation and expansion prior to network replacement. Deployment of a few large centers with increased switching capacity and high speed interfaces. Addition of new nodes to upgraded existing ones in the access level. Integration of voice and data into common applications at the IN service control point. Introduction of an overlay broadband access NGN to address new customers and services to the existing infrastructure, while allowing simultaneous operation of both networks. Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

13. Migration procedure (II) Addition of new gateways and upgrade of existing ones by adding functionality (e.g. to the DSLAMs). Emergence of novel IP applications. Replacement of outdated equipment or equipment that is not compatible with new services and cannot be transformed to NGN. Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

14. Agenda Why NGN NGN Basic Features Conversion Strategies towards NGN Standards & Regulations Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

15. IETF for NGN RTP (Real Time Protocol) for the carrying of voice, audio and media through IP SDP (Session Description Protocol) for multimedia sessions SIP (Session Initiation Protocol) for signaling, discovery and session management Collaboration with ITU-T for the definition of NGN interworking regulations, security issues, media gateway control, transport, service development, authentication, authorization and accounting Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

16. ITU-T for NGN Study Group 13: overall responsibility for IP work NGN-GSI (Global Standards Initiative): diverse aspects of services, capabilities, control, migration of current technology to NGN and future packet based network requirements Rec. ITU-T Y.2261: Evolution towards NGN Rec. ITU-T Y.1541: Quantifying user QoS needs in IP terms Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

17. ETSI for NGN TISPAN (Telecoms & Internet converged Services & Protocols for Advanced Networks): definition of a European view of NGN, releases on NGN architecture NGN Implementation Group: major input to 3GPP IP work Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

18. Conclusions NGN is a promising technology which emphasizes on internet based services, IP applications and mobility support. Strategic planning is indispensable to guarantee interoperability of NGN with diverse systems. Gradual smooth migration from existing networking to innovative NGN demands coordinated work from the industry and standardization worlds. Subject: Evolution towards the Next Generation Network dariusz.rozanski@szczesliwice.net

19. Personal details Name: Surname: Company: Phone: E-mail: Evangelia Georgiadou Hellenic Telecommunications Organization (OTE) S.A. +302106114695 egeorgiadou@oteresearch.gr dariusz.rozanski@szczesliwice.net

20. Thank you ! dariusz.rozanski@szczesliwice.net