NGN Access Single Line Multi-Service

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

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Public Network Evolution
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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

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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
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Public network evolution to NGN

• Network evolution driven by
• Revenue diversification, More services to users.
• Economy of Scale, Increasing penetration and
  coverage.
• Capitalization on existing investment,
  Streamlining operation cost

• 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

Commercial
SINGLE LINE MULTI SERVICE (SLMS)

• Customer Care
• New service subscription
• Pay bill on-line

• Data
• VPN
• 128k - 25MB
• Managed Always-on

Multi-Unit
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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/Altern
  ative Revenues to Voice

Packetised Optical Core
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Structural Separation
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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
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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.
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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

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NGN Access Network
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Access is the limitation
POTS
Local Exchange
BRI
PRI
64k
E1
X.21/V.35

• 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

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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

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Todays Local Loop
DISTRIBUTION
CENTRAL OFFICE
SUBSCRIBER
HeadEnd
Cable Hub
TV
ATMSwitch
Mux
PC
T1/E1 Router
Core NGN
PC
DLC
COT
Telephone
Local Exchange Switch
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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.

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Multi-Service and NGN Access
Other OSS Managt systems
Access Managt System
Narrowband FXS / FXO
IAD
Home GW
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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

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NGN Public Access, Serving Central Office
Service Gateway
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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

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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

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A closer look ..
VOICE 64kbps data services
Access network
Backbone network
User network
POTS
LE
RT
ISDN
circuit

• Reliable Architecture
• Highly Scalable in Coverage and Number of
  Nodes/Lines
• Narrow-bandwidth Limits Services Delivery

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Functions of the LE
VOICE 64kbps data services
Access network
Backbone network
User network
LE
RT
circuit
Remote Access
TRUNKING
Subscriber ACCESS
TRUNKING
Call PROCESSING
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Multi media switch Broadband Access Node
Any Service (Voice, data, video, entertainment ..
Access network
Backbone network
User network
Packet Service GW
RT
ACCESS
TRUNKING
Relay of Call PROCESSING
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Remote node Multi Access Line Concentrator
Any Service (Voice, data, video, entertainment ..
Access network
Backbone network
User network
Line Access Concentration
Packet Service GW
packet
Remote Access
TRUNKING
ACCESS
TRUNKING
Relay of Call PROCESSING
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Customer Premises Integrated Access Device
Any Service (Voice, data, video, entertainment ..
Access network
Backbone network
User network
Line/Access Concentration
Service GW
IAD
Any service
packet
packet
Access Management
Well known ports
Remote Access
Trunking
ACCESS
TRUNKING
PROCESSING
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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

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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
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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

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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

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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

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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,

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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

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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?

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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 Class Application Baskets Maximum Bit rate Downstream (Mbps)
Premium-Residential Fast Internet 0.5
Silver-Residential Fast Internet, POTS 1
Gold-Residential Fast Internet, ISDN 2
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Thank You

• Yassar Khoury
• Zhone Technologies, IncSenior Systems Engineer
• MEA Asian Sub-Continenttel. 971 4 331
  3421fax. [phone]ykhoury_at_zhone.com