NGN Access Single Line Multi- Service ITU-BDT Regional workshop on NGN Economics Damascus – Syria August 18 – 21 2003
Dec 18, 2015
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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.
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
NGN Access Network
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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.
Regional NGN Economics WorkshopAug 18 – 21 2003
Multi-Service and NGN Access
Applications & Services Layer
Applications & Services Layer
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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 ..
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Any Service (Voice, data, video, entertainment ..Any Service (Voice, data, video, entertainment ..
Regional NGN Economics WorkshopAug 18 – 21 2003
Customer Premises: Integrated Access Device
Accessnetwork
Backbonenetwork
Usernetwork
Service Service GWGW
packetpacket
ACCESSACCESS TRUNKINGTRUNKINGPROCESSINGPROCESSING
Remote Remote AccessAccess
TrunkingTrunking
packetpacket
AnyAnyserviceservice
IADIAD
Well knownWell knownportsports
Any Service (Voice, data, video, entertainment ..Any Service (Voice, data, video, entertainment ..
Access Access ManagementManagement
Line/Access Line/Access ConcentrationConcentration
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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
Regional NGN Economics WorkshopAug 18 – 21 2003
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?
Regional NGN Economics WorkshopAug 18 – 21 2003
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]