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NGN Access Single Line Multi-Service

NGN Access Single Line Multi-Service. ITU-BDT Regional workshop on NGN Economics Damascus – Syria August 18 – 21 2003. Agenda. Public Network Evolution Driving forces of network evolution Evolution characteristics Access Network Evolution Broadband Access Network NGN Access Network

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NGN Access Single Line Multi-Service

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  1. NGN AccessSingle Line Multi-Service ITU-BDT Regional workshop on NGN Economics Damascus – Syria August 18 – 21 2003

  2. Agenda • Public Network Evolution • Driving forces of network evolution • Evolution characteristics • Access Network Evolution • Broadband Access Network • NGN Access Network • PSTN replacement • Economics and Scale • Access Network Migration Local Perspective • Implementation Issues (universality and OSP) • Potential Solutions

  3. Public Network Evolution

  4. Regulations & Liberalization New Business Models Competition Business focused Telecommunications Operation Drivers A New Telecom Environment Characterized by: • New Business Models • Privatization Liberalization & Competition • Business & Customer oriented • Fusion of Economic Sectors • Service Convergence (IT & Telecommunication) • E-World & the Internet • Integration of Data Voice & Video • Accelerated Technology Developments • Optical Networking • Wireless Networking • MIPS SW & Systems Modularity • Powerful users applications & CPEs

  5. National Mobile Telephone 27% 25% Other 3% International Telephone 45% New Business Model A Next Generation Architecture is Developing: • Multi-Service Demands • Customer Driven Service Development • Multi-Media Offerings • Emergence of Specialized Operator • Applications & Content Providers • Service Providers • Network providers • Clear & Distinct Separation between different Layers • Limit-less opportunities for service creation, empowered by specialized Service Platforms (e.g. IN, ISPs, VOD, etc) • Transparency in Core & Access Network • Well defined standardized Interfaces • Change in Revenue Streams • Data Traffic vs. Voice traffic • Developing countries / reductions in International voice revenues Arab region Revenue $ 13.1 B, 1.6% of world, 99 ITU-T

  6. Residential Public network evolution to NGN • Next Generation Network • Higher BW to users • Multi-Service support • Scalability • Future proof network • Manageability • Network evolution driven by: • Revenue diversification, More services to users. • Economy of Scale, Increasing penetration and coverage. • Capitalization on existing investment, Streamlining operation cost Voice • POTS • CD Quality • Lifeline Entertainment • Video • Music • Games / Gambling Commercial SINGLE LINE MULTI – SERVICE (SLMS) Customer Care • New service subscription • Pay bill on-line Data • VPN • 128k - 25MB • Managed Always-on Multi-Unit

  7. Service Intelligence Applications Hosting Access network NGN, Emerging Architecture • Packet Based Network • Multi-service Support Over Single Infrastructure • Higher BW to Users &BW efficiency • Service Independence of Network Technology • Opportunities for service creation and development • Network Transparent Services Delivery • Standardized Interfaces • Distinct Separation between different Layers • Greater Emphasis on Management • Change in Traffic Streams • Data Networks Carrying Voice traffic (data limitations & congestion in voice nets) • Service based charges & profit distribution/Alternative Revenues to Voice Packetised Optical Core

  8. Applications & Services Layer Service Intelligence Contents Hosting Core IP Router Network Layer Core Voice Switching Core ATM Switching Access Layer Dialup RAS DLC/RSU DSLAM ATM / FR Access Head end CATV Access Router DSL Line POTS or E1 voice Leased Line DSL Line Cable TV Structural Separation

  9. Coordination Access Network The New Model • The Access Network Sets the Pace of Network Evolution • Focal Point for Increasing Tele-density, and no. of Customers • High BW to Users • Multi-Service Support & Evolution to Packet Based Network • Multi- Providers Support & Access Port Whole Sale • Short Time To Market • Competition Regulatory & Unbundling Pressure • Change Sensitive & Cost Sensitive • Vast Geographical Coverage • Large Investment Cost, Very Large Number of Node & Interfaces • Highly Sensitive to Operation Cost • Minimize Change in Established Work Procedures • Least Penetrated by Management Systems • Low Skilled Work Force • Access Agnostic Future Proof Architecture • Support for Current & Evolving Services • Support for Different Access Technologies Interference Lack of space

  10. Next Generation Access Network • Flexibility • Multi-Service Support, • Multi-Provider Support • Full Services Transparency & STTM • Scalability • Penetration & Coverage • Public Network Requirement • Life Line support • Service Universality • Service, QoS & SLA • Customer, Multi-Service & Multi-Providers support • Simplicity • Simple to Operate • Minimum Changes to Established Procedures • User Friendly Setup & CPEs • Cost Effectiveness • Capitalize on Existing Infrastructure Simplified network architecture that provides broadband and narrowband services over a scalable access and distributed switching infrastructure.

  11. Agenda • Public Network Evolution • Driving forces of network evolution • Evolution characteristics • Access Network Evolution • Broadband Access Network • NGN Access Network • PSTN replacement • Economics and Scale • Access Network Migration Local Perspective • Implementation Issues (universality and OSP) • Potential Solutions

  12. NGN Access Network

  13. Access is the limitation • Given the limitation of the traditional C.O. switches (64k per line), current access infrastructure cannot be the the right basis for the Internet economy services • “Now that Telecom Italia is fully privatized our main goal is to freeze all the investment in traditional Access Technology (POTS, ISDN and Leased Line) moving investments toward Broadband solutions” [Oscar Cicchetti – CTO Telecom Italia] POTS Local Exchange BRI PRI 64k E1 X.21/V.35

  14. Broadband Access Technologies • Satellite – Expensive • efficient in remote areas • Coax – • Cable operators exploiting infrastructure • Copper – • ISDN/xDSL, Maximum utilization of existing infrastructure • Fiber – • FTTCab FTTCurb FTTB FTTH • Electric Power Lines – • Higher coverage and scalability than PSTN, however complex technology • Terrestrial Wireless BWLL – • Both through packet based systems (Wireless Ethernet point to Multipoint) or through MMDS/LMDS

  15. PSTN Private Data Internet IPRouter SMS SMS DSLAMs DSL Modem Video Today’s Local Loop SUBSCRIBER DISTRIBUTION CENTRAL OFFICE HeadEnd Cable Hub TV ATMSwitch Mux PC T1/E1 Router Core NGN PC DLC COT Telephone Local Exchange Switch

  16. Problems with the Current Access Solutions • Traditional TDM access technologies are very expensive to add additional services • Service providers are overlapping legacy and broadband access technologies • No true integration of services into a single subscriber access line yet • Multiple bills from the same service provider • Infrastructure product are all provided from different vendor • Scaling and installing subscriber services to the masses has been very difficult • Not all access technologies will support broadband value added services • High risk on Investment Protection, Carriers will only deploy Next Generation DLC RSU, if they are confident that it will be a Node in their NG Packet Infrastructure.

  17. Applications & Services Layer Service Intelligence Contents Hosting Network Layer Core Voice Switching Core ATM Switching Core IP Router Service Gateway Access Layer Service Gateway DLC/ RSU DLC/RSU DSLAM DSLAM Braodband G.SHDSL BroadbandxDSL Multi-Service and NGN Access Other OSS& Managt systems Access Managt System Narrowband FXS / FXO IAD Home GW

  18. NGN Access Characteristics Multi-Service Solution • State of the art Packet (IP/ATM) Solution • Best efficiency in terms of Transmission BW • Future Proof Solution • Multi-Service Support (Full convergence of Data and voice services) • Convergence on IAD/Home Gateway, DLC/DSLAM, and Service Gateway • Streamline the network (Less boxes in number and types) • Highly flexible service oriented solution • Flexible service provisioning with SLA & QoS, • Standard based Transparent support of features and services • Generating new services and revenue opportunities • Shorter time to market & lower cost • Multi-Provider Support • End-To-End management

  19. Copper XDSL POTS FXO POTS DLC/DSLAM Data CenterCO T1/E1 Indoor /Outdoor Class 5 Switch STM-x Packet Connections XDSL DLC/DSLAM ATM/Frame Relay Switch POTS Indoor /Outdoor T1/E1 Backbone IP Router NGN Public Access, Serving Central Office Service Gateway

  20. PSTN: Traditional wire line voice network TOLL User network Access network Backbone network LE RT • Proven economical operator network built out. • ‘Toll/Class 4’ voice switches for high capacity switching • ‘LE / Class 5’ voice switches for service delivery • ‘Remote terminals’ for economical access • Flexible service handling – “intelligent networks” • client server model • uses SS7 message transport capability

  21. NGN Access - Conceptual Design Objectives • ‘Copy’ the proven traditional voice network topology and service models, but address: • Integrated multi-service (service agnostic) • Voice, data, video, entertainment – over single line • New paradigm: ‘subscriber focus’ with assigned services vs. service specific • Apply latest technologies • Broadband to address bandwidth needs • Packet technology to allow efficient bandwidth utilization • Agnostic for access technology • Copper, fiber, wireless • Unify data streams and ensure equal service control • Ultimately aimed to reduce operational expenses. • Dramatically reduced number of boxes • slot cards vs. boxes • Management System • End to End across Access Network • Multi-Service Multi-Provider support • Gateway for interoperation with other Operational Support Systems • Distributed architecture designed for 99.999% availability

  22. A closer look .. VOICE & 64kbps data services User network Access network Backbone network POTS RT LE ISDN circuit • Reliable Architecture • Highly Scalable in Coverage and Number of Nodes/Lines • Narrow-bandwidth Limits Services Delivery

  23. Functions of the LE VOICE & 64kbps data services User network Access network Backbone network LE RT circuit Remote Access TRUNKING Subscriber ACCESS Call PROCESSING TRUNKING

  24. Multi media switch: Broadband Access Node Any Service (Voice, data, video, entertainment .. User network Access network Backbone network Packet Service GW RT ACCESS Relay of Call PROCESSING TRUNKING

  25. Remote node: Multi Access Line Concentrator Any Service (Voice, data, video, entertainment .. User network Access network Backbone network Line Access Concentration Packet Service GW packet Remote Access TRUNKING ACCESS Relay of Call PROCESSING TRUNKING

  26. Customer Premises: Integrated Access Device Any Service (Voice, data, video, entertainment .. User network Access network Backbone network Line/Access Concentration Service GW IAD Any service packet packet Access Management Well known ports Remote Access Trunking ACCESS PROCESSING TRUNKING

  27. Economics and Scale (Drivers) • Distribution & Service Diversity • Service Diversity to follow customer demands • Service changes • Geography & Socio-Economic of Service Areas • Multi-Services Quality • Universal Service Obligation • QOS & SLA • Tariffs & Revenues • Maximize Revenues in potential Service area • Cost and Tariff to reflect Qualified-Areas/USO/QoS • Opex reduction

  28. Application &Service Layer Other OSS& Managt Systems Core Layer VG VG AccessManagt System Access Layer BAS BAS Services & Applications Access Concentration Layer CPE Layer Local Exchange IP/ATM Link TDM Link DSL Link POTS Distributed Access Architecture PSTN Switched Circuit Network Public Broadband Core Network Chasta Aggregation IP router Node V 5.2 IP/ATM Service Mediation & GW Layer Service GW Service GW POTS ADSL SHDSL VDSL E1/PRI DID E1 IP/ATM RSU (DLC) /DSLAM Line Termination Layer MTU/MDU DLC/DSLAM RSU(DLC)/DSLAM xDSL xDSL • Z-Edge VDSL IAD FXS / FXO Home GW

  29. Economics and Scale Factors • Broadband Access & Coverage Area • Total Service Area • Wire Centers in area • Wire pairs per Center • Wire Length • Rate limitations over copper • Dedicated against Shared Medium • Density and Traffic requirement per Service • Symmetric/Asymmetric • QOS & SLA

  30. Agenda • Public Network Evolution • Driving forces of network evolution • Evolution characteristics • Access Network Evolution • Broadband Access Network • NGN Access Network • PSTN replacement • Economics and Scale • Access Network Migration Local Perspective • Implementation Issues (universality and OSP) • Potential Solutions

  31. Broadband Access - Syrian Network • Fiber Optic to Several Organizations and Large Enterprises • SDH based Nodes allowing transmission of NxE1s or E3s. • Limited use of HDSL as part of TDM/FR Digital Leased Line Network, Serving SMEs • Using standalone 1 pair and 2 pairs modems to deliver low speed LL • ATM based ADSL/SHDSL DSLAMs as part of Internet backbone • for high speed Internet and Leased Lines, is under installation (about 5000 ports, expandable to 20,000) • WLL evaluation/tendering • About 80,000 ISDN BRI ports

  32. Customer Premises IAD / Home GW Curbside MDU/MTU Outdoor Cabinets RSU/DLC DSLAM CO Indoor Cabinets DLC/ DSLAM CO/POP Service Enforcement / Gateways       Broadband Access - Limitations • Access Network current architecture is not BB friendly • In Large Cities typical wire center/office area ranges between 3-5 KMs, • However smaller towns and rural areas tend to have longer loops #8 KMs. • Most wire Centers has Switches, not much use of DLC/RSU concept. • No Outdoor Cabinets, minor fiber penetration to Local Loop (neither feeder cable/distribution cable) • Designed toward Single Service per line (voice mainly) • Large Cities where majority of target BB users, suffer shortages of copper loop • Outside plant is not evaluated for outdoor/indoor Cabinets use • Copper quality targets Analog voice delivery, few digital testing take place • Copper qualifications for Multiple Services and Digital transmission • Many segments has old copper cables and requires replacement,

  33. The Way Forward • Use current plans for DLC/RSU introduction • Target Narrowband and Broadband Services • Ensure that DLCs/RSUs will form part of STE Packet Network • Extend fiber in primary network • Design DLC/RSU areas targeting BB (short secondary loops) • Different Access Solutions to suit different areas • Follow current demography of each access area • Flexibility, Design for Service evolution and changes in demography and customer demands (voice vs. data) • Target Penetration and Scalable platforms • Investment protection for future service Introduction

  34. Service Definition To maximize revenues and customer base, design Multi-Service packages • Voice Data or Video packages? • Circuit-switched or packet-switched? • Symmetric or asymmetric? • Mass market or niche? • Coverage and Market Segmentation?

  35. Possible Service Evolution • Target Public Voice and Data • Meet delayed Voice demands, overcome copper shortage (minimize investment in copper through pushing fiber in Access Network) • Flexible Service Evolution to meet demands for higher BW and potential future services • Access Nodes to provide POTS/ISDN Lines (directly in Curb/Cabinet or Inband VOP) • Access Nodes to provide ADSL / SHDSL for Internet Access and Leased Lines • Migrate to support Video and BW consuming Interactive Services

  36. Thank You Yassar Khoury Zhone Technologies, IncSenior Systems Engineer MEA & Asian Sub-Continenttel. +971 4 331 3421fax. +971 4 332 2865ykhoury@zhone.com

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