NGN Access Single Line Multi-Service ITU-BDT Regional workshop on NGN Economics Damascus – Syria August 18 – 21 2003

NGN Access

Single Line Multi-Service

ITU-BDT Regional workshop on

NGN Economics

Damascus – Syria

August 18 – 21 2003

Regional NGN Economics WorkshopAug 18 – 21 2003

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

Public Network Evolution


Telecommunications Operation Drivers

0

500

1000

96 97 98 99 '00

RevenuesBn $

Business focusedBusiness focusedCompetitionCompetition

Regulations & Regulations & LiberalizationLiberalization

New Business New Business ModelsModels

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


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

International Telephone 45%

NationalTelepho

ne25%

Mobile 27%

Other 3%

Arab regionRevenue $ 13.1 B,

1.6% of world, 99 ITU-T


Network evolution driven by:• Revenue diversification, More

services to users.• Economy of Scale, Increasing

penetration and coverage.• Capitalization on existing

investment, Streamlining operation cost

Public network evolution to NGN

Next Generation Network • Higher BW to users

• Multi-Service support

• Scalability

• Future proof network

• Manageability

Voice POTS CD Quality Lifeline

Entertainment Video Music Games / Gambling

Customer Care New service

subscription Pay bill on-line

Data VPN 128k - 25MB Managed Always-on

Multi-Unit

Commercial

SINGLE LINE MULTI – SERVICE (SLMS)

Residential


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

CoreService

Intelligence

Applications Hosting

Accessnetwork


Structural Separation

Applications & Services Layer

Service Service IntelligenceIntelligence

Contents Contents HostingHosting

Network LayerCore ATM Core ATM SwitchingSwitching

Core Voice Core Voice SwitchingSwitching

Core IP Core IP RouterRouter

Access LayerDLC/RSUDLC/RSU

Access Access RouterRouter

DSLAMDSLAM ATM / FR ATM / FR AccessAccess

Head end Head end CATVCATV

Dialup Dialup RASRAS

DSL LineDSL LinePOTS or E1 POTS or E1 voicevoiceLeased LineLeased LineDSL LineDSL Line Cable TVCable TV


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

Coordination

Lack of space


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.


Agenda

Public Network Evolution• Driving forces of network evolution

• Evolution characteristics

• Access Network Evolution

Broadband Access Network • NGN Access Network

• PSTN replacement


• Implementation Issues (universality and OSP)

• Potential Solutions

NGN Access Network


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]

Local Exchange

64k

POTS

BRI

PRI

E1

X.21/V.35


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


Today’s Local Loop

DISTRIBUTION CENTRAL OFFICE

TV

PC

TelephoneCOTDLC

Local Exchange Switch

Cable HubHead

End

PCMux

T1/E1 Router

ATMSwitch

SUBSCRIBER

Core NGN

PSTN

Private Data

Internet

Video

IPRouter SMS

SMS

DSLMode

m

DSLAMs


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.


Multi-Service and NGN Access



Service Service IntelligenceIntelligence

Contents Contents HostingHosting

IADNarrowbandFXS / FXO

Home GW

Access ManagtSystem

Other OSS & Managtsystems

Access LayerAccess Layer

Core IP Core IP RouterRouter

DLC/ DLC/ RSURSU

Service Gateway

BraodbandG.SHDSL

BroadbandxDSL

DSLAMDLC/RSU

DSLAM

Service Gateway

Network Layer Network LayerCore ATM Core ATM SwitchingSwitching

Core Core Voice Voice SwitchingSwitching


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


NGN Public Access, Serving Central Office

Data Center CO

Class 5 Switch

ATM/Frame Relay Switch

Backbone IP Router

Service Gateway

XDSL

POTS

T1/E1

CopperXDSL

POTS

T1/E1

POTS FXO

STM-xPacket

Connections

Indoor /Outdoor

Indoor /Outdoor

DLC/DSLAM

DLC/DSLAM


Usernetwork

Backbonenetwork

PSTN: Traditional wire line voice network

Accessnetwork

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

LELETOLLTOLL

RTRT


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


A closer look ..

Accessnetwork

Backbonenetwork

Usernetwork

LELERTRTcircuitcircuit

POTSPOTS

ISDNISDN

VOICE & 64kbps data servicesVOICE & 64kbps data services

- Reliable Architecture

- Highly Scalable in Coverage and Number of Nodes/Lines

- Narrow-bandwidth Limits Services Delivery


circuitcircuit

Functions of the LE

Accessnetwork

Backbonenetwork

Usernetwork

LELERTRT

Subscriber Subscriber ACCESSACCESS TRUNKINGTRUNKINGCall Call

PROCESSINGPROCESSING

VOICE & 64kbps data servicesVOICE & 64kbps data services

Remote Remote AccessAccess TRUNKINGTRUNKING


Multi media switch: Broadband Access Node

Accessnetwork

Backbonenetwork

Usernetwork

RTRTPacket Packet Service GWService GW

ACCESSACCESS TRUNKINGTRUNKINGRelay of Call Relay of Call PROCESSINGPROCESSING

Any Service (Voice, data, video, entertainment ..Any Service (Voice, data, video, entertainment ..


Remote node: Multi Access Line Concentrator

Accessnetwork

Backbonenetwork

Usernetwork

Packet Packet Service GWService GW

packetpacket

ACCESSACCESS TRUNKINGTRUNKINGRelay of Call Relay of Call PROCESSINGPROCESSING

Remote Remote AccessAccess TRUNKINGTRUNKING

Line Access Line Access ConcentrationConcentration



Customer Premises: Integrated Access Device

Accessnetwork

Backbonenetwork

Usernetwork

Service Service GWGW

packetpacket

ACCESSACCESS TRUNKINGTRUNKINGPROCESSINGPROCESSING

Remote Remote AccessAccess

TrunkingTrunking

packetpacket

AnyAnyserviceservice

IADIAD

Well knownWell knownportsports


Access Access ManagementManagement

Line/Access Line/Access ConcentrationConcentration


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


DLC/DSLAMMTU/MDU

Home GW

1Z-EdgexDSL

FXS / FXO

VDSL

xDSL

RSU (DLC) /DSLAM

RSU(DLC)/DSLAM

IAD

Line Termination Layer

POTSADSL

SHDSLVDSL

E1/PRIDID

E1 IP/ATM

Distributed Access Architecture

Access ManagtSystem

Other OSS & ManagtSystems

Access Layer

CPELayer

Application &Service

Layer

Core Layer

IP/ATM LinkTDM LinkDSL LinkPOTS

Access Concentration Layer

PSTNSwitched Circuit Network

Local Exchange

Public Broadband Core Network

V 5.2

Services & Applications

IP/ATM

ServiceGW Service

GW

Service Mediation & GW Layer

VG

BAS

VG

BAS

Chasta Aggregation IP router Node


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


Agenda

Public Network Evolution• Driving forces of network evolution

• Evolution characteristics

• Access Network Evolution

Broadband Access Network • NGN Access Network

• PSTN replacement


• Implementation Issues (universality and OSP)

• Potential Solutions


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


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,

Customer PremisesIAD /

Home GW

Curbside MDU/MTU

Outdoor CabinetsRSU/DLC

DSLAM

CO Indoor CabinetsDLC/

DSLAM

CO/POPService Enforcement /

Gateways


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


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?


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

Service Class

Typical Customer

Application Baskets

Maximum Bit rate

Downstream (Mbps)

Premium-Business SOHO

Fast Internet, Intranet, POTS 0..5-1

Silver-Business

SOHO/Small Enterprise

Fast Internet, Intranet, ISDN 1-2

Gold-Businessl

Small/Medium Enterprise

Fast Internet, intranet, Data Transmission, VOP,

POTS 2-8

Service ClassApplication Baskets

Maximum Bit rate Downstream

(Mbps)

Premium-Residential Fast Internet 0.5

Silver-Residential Fast Internet, POTS 1

Gold-Residential Fast Internet, ISDN 2

Thank You

Yassar Khoury

Zhone Technologies, IncSenior Systems Engineer

MEA & Asian Sub-Continenttel. +971 4 331 3421fax. +971 4 332 [email protected]

Documents

NGN Access Single Line Multi-Service ITU-BDT Regional workshop on NGN Economics Damascus – Syria August 18 – 21 2003