Next Generation Networks
– delivering competitive advantage
Neil McArthur
Chairman, TalkTalk Technology
Agenda
What’s an NGN
Our NGN
The significance of Ethernet
The importance of QoS
Opals Network based SIP development
Managing Legacy to NGN migration
Assurance.
What is an NGN?
Applications
Network
intelligence
 Multi-service network
 QoS enabled
 End to end IP based network
 Separation of conveyance and service control
(network intelligence) functions/applications
 Ability to build new services without changing
the network infrastructure
 NGNs speed up innovation
Conveyance
Current architecture
Network Intelligence
Conveyance
NTE / Customer
access device
Access
Network
Aggregation
Node
Phone
Line
Card
PC
DSLAM
Backhaul
Network
Applications
Network
Edge
Core Network
IN
platform
PSTN
web
e-mails
ATM / IP
Video
server
TV
CATV
Mobile
Base
Station
PSTN
Office
premises
Ethernet
switch
SDH /
Ethernet
V-HLR
GMSC
ASP /
datacentre
Slide
4
Ofcom
NGN architecture
Network
Intelligence
Conveyance
NTE / Customer
access device
Access Network
Aggregation
Node
Backhaul
Network
Network
Edge &
Core
Voice
Phone
PC
Web
e-mails
MSAN
IP /
MPLS
Network
Intelligence
Video
server
TV
Mobile
Base
Station
Office
premises
Ethernet
switch
Slide 5
Applications
This document is uncontrolled if
printed or saved to a non-authorised
site.
Games
WDM /
Ethernet
ASP /
datacentre
Ofcom
What does our NGN look like?
 Core network two 400 Gig fibre rings around the main population
centres. 47 core POPs
 800 Gig Supercore fibre network around greater London taking in all
the Telehouses and main carriers
 Layer 1 & 2, access network building to 2000 exchanges
 Exchange MSANs copper and fibre, supporting Residential,
SOHO and SME services
 Hierarchical QoS enabled network hence supporting voice and data
services
Index
DWDM Nodes (Optical connectors)
Core Network
800Gb
400Gb
10Gb
Collector Nodes
Unbundled Exchanges
Covers over 80% of businesses –
2.1 million business premises
Commitment to increase to 2,000
exchanges for both MPF and
SMPF by end 2010 85%
coverage of businesses
Ethernet termination at 1,300
exchanges in 2010
Fig 3
But, we still have one of these to run
BT
Dundee
BT Inverness
BT Glasgow
BT Carlisle
INVERNESS
POP
BT Clyde Valley
CARLISLE
POP
DUNDEE
POP
GLASGOW
POP
PRESTON
POP
ABERDEEN
POP
BT
Edinburgh
BT Sunderland
DARLINGTON
POP
BT Middlesborough
BT
Darlington
BT Bolton
BRADFORD
POP
BT
Warrington
BELFAST
POP
NEWCASTLE
POP
OTHER
CARRIERS
BT
BELFAST
M/C
2
M/C
BT
Bradford
1
LEEDS
POP
BT
Chester
STOKE
POP
BT
Stoke
BT Shrewsbury
BT
Wolverhampton
BT
Coventry
BT
Norwich
BT Manchester
BT Liverpool
SHEFFIELD
POP
Derby
POP
BT Leeds
BT Sheffield
BT
POTTERS
BAR
BT
Colindale
OXFORD
POP
B'HAM
Milton
Keynes
POP
BT N.
Paddington
BT
NEWPORT
BT Wood
Green
BT Eltham
BT Cardiff
BT
Swindon
BT
TAUNTON
MAIDSTONE
POP
BT Croydon
BT Salisbury
BRISTOL
POP
BT Medway
BT Bristol
BT
Bournemouth
PORTSMOUTH BT Aldershot
POP
BT Guildford
BRIGHTON
POP
BT
Southampton
BT Plymouth
BT Maidstone
TUNBRIDGE
WELLS
POP
ALDERSHOT
POP
SOUTHAMPTON
POP
BT
Portsmouth
BT
Chelmsford
OTHER
CARRIERS
BT Southbank
BT Kingston
PLYMOUTH
POP
BT
ROMFORD
BT Baynard
SWINDON
POP
IPSWICH
POP
CHELMSFORD
POP
LON 1
LON 2
BT ESHER
BT Ipswich
BT Ilford
BT Slough
READING
POP
EXETER
POP
BISHOPS
STORTFORD
POP
BT Luton
BT
Reditch
CARDIFF
POP
BT Exeter
CAMBRIDGE
POP
BT
Tower
BT Reading
BT
Cardiff
BT
Northampton
BT Milton
Keyenes
BT Oxford
GLOUCESTER
POP
SWANSEA
POP
BT Bishops
Stortford
BT Leicester
LEICESTER
POP
BT Ealing
BT Birmingham
BT
Cambridge
NORTHAMPTON
POP
BT Derby
BT WATFORD
BT Gloucester
NORWICH
POP
BT
Peterborough
PETERBOROUGH
POP
BT Nottingham
OTHER
CARRIERS
BT
Swansea
TALKTALK
TECHNOLOGY
BT
INTERCONNECT
NETWORK
BT Newcastle
EDINBURGH
POP
CLYDE
VALLEY
BT
Preston
BT
Aberdeen
BT
Brighton
BT
Tunbridge
Wells
High Level View of Opal NGN and TDM
Networks
Manchester
ASX
Switches
Birmingham London
ASX
Switches
ASX
Switches
Opal
NGN
MPF
MSAN
Ethernet
Backhaul
IP/TDM
Transit
GSX
Switches
GSX
Switches
MPF
TDM
MSAN
TDM
Switches
Fig 1
TDM
Switches
TDM
Switche
s
Impact of Ethernet
Source: Analysis Research, 2007
The significance of Ethernet
 Has become the established standard for network
interconnectivity, at work and in the home
 A disruptive technology, replacing Frame Relay, ATM, E1,Token
ring etc
 Can be delivered cost effectively across
large scale NGNs
 Not distance dependant and highly scalable
 End to end standards based, meaning compatibility
 Creates another telecoms inflection point
Three phases of Carrier Ethernet
Phase 1
Standard
Ethernet
Phase 2
Enhanced
Ethernet
Phase 3
EFM/NGA
Ethernet over
copper
 E-LAN, E-Line, E-Tree services
 P2P, P2MP, MP2MP Metro and national Ethernet Layer 2
 Access circuits to MPLS
 10/100/1000Mbps fibre access, with resilience options
 Incremental, flexible service bandwidths/internet over Ethernet option
 Aim to be MEF 9 and 14 compliant
 EOAM 802.1ah - end to end QoS management and reporting
 Remote diagnostics capability, enhanced alarm functionality resulting in
better SLA, reduced downtime, greater visibility of service performance
 Bandwidth profiling
 Burstable bandwidth option
 3Mbps-40Mbps service bandwidths over copper
 To be included in Ethernet and MPLS services
 Option for a lower-cost alternative / different SLA
Tactical and Strategic Ethernet
Ethernet
Phase
Product Offered
Access medium
Demarcation of
service
Opal/Reseller
Tools
Wholesale
implementation of:
Pricing
Tactical
IPVPN Access
P2P Ethernet
P2MP Ethernet
Fibre only
Local Exchange
Wholesale and managed
variants of:
Local Exchange
Strategic
IPVPN Access
P2P Ethernet
P2MP Ethernet
M2MP Ethernet
Fibre
Customer Premises
Copper
Pricing
Ordering
Reporting
Service
changes
QoS enabled network
 QoS is the differentiator on NGN service delivery.
 Network supports Hierarchical QoS
in the core, edge and access
 QoS Protocols - MPLS, COS, DiffServ
 Precision Time Protocols. IEEE 1588v2
 Layer 2 Ethernet OAM, ITU 1731
 Layer 3 IPSLA
Opal’s SIP development
 Our NGN already carries 1.5Billion minutes of VoIP traffic
month
 So where are the network based SIP products?
 Connectivity is key in the SIP business
 Functionality around In/ Outbound
 Centrex- Featureline services
 IVR services
 Number portability
Voice Solution Overview
Customer
Access
1–6
Channels
ADSL
7 – 15
Channels
Annex M
16 – 30
Channels
Transport
SIP
EFM
SIP / CES
30 +
Channels




Ethernet
Access to suit customer requirements
Customer has transport choice
Network Hosted Features as standard
Up Sell to Network Value Adds
Network Hosted
Featureset
Voicemail
DDI
Extension Dialling
Presentation Number
Hunt Groups
CLIP / CLIR
Caller Display
Call Diversion
Call Pick-Up
Call Hold
Call Transfer
Call Barring
Network Value Adds
REPLAY
Auto
Attendant
Call
Queuing
Data
Capture
IVR
Call
Ratio
Managing TDM to NGN migration
 Leave the choice to the customer.
 Our view is we should accept voice traffic into the NGN either as
TDM or IP. For both PSTN and ISDN.
 Customers migrating to IP PBX may send traffic direct as IP over
DSL or Ethernet.
 Customers retaining TDM PBX may send traffic to the NGN over
Ethernet using Circuit Emulation.
 Traffic is carried into the core of the NGN and broken out into
conventional TDM trunk exchanges.
 This avoids building out TDM/SDH network out to exchanges.
No 1 in Copper Assurance

Investment of over £5M on copper loop testing
 Openreach accept our fault data
 Proactive fault management
 Fastest average speeds over copper in the UK
 Dynamic line management DLM optimises copper line
speeds
 Important in EFM deployment.
Ethernet OAM
Enables engineered SLA’s at Layer
3 and above by delivering Layer 2
fault and performance
management
End to end functionality validated
through implementation of industry
standards
Service
Class
Service
Characteristics
CoS
ID
Bandwidth Profile
per EVC per CoS
ID
Premium
Real-time IP telephony
or IP video
applications
6, 7
CIR > 0
EIR = 0
Delay < 5ms
Variation < 1ms
Loss < 0.001%
Silver
Bursty mission critical
data applications
requiring low loss and
delay (e.g., Storage)
4, 5
CIR > 0
EIR ≤ UNI Speed
Delay < 5ms
Variation = N/S
Loss < 0.01%
Bronze
Bursty data
applications requiring
bandwidth assurances
3, 4
CIR > 0
EIR ≤ UNI Speed
Delay < 15ms
Variation = N/S
Loss < 0.1%
CIR=0
EIR=UNI speed
Delay < 30ms
Variation = N/S
Loss < 0.5%
Standard
Best effort service
802.1ag – Connectivity Fault Management (CFM)
ITU T.Y.1731 – Service Performance
Key OAM Metrics reported on:
 Availability
 Throughput (% of CIR/EIR)
 Frame Loss
 Frame Delay
 Frame Delay Variation
0, 1, 2
Service
Performance
Our vision
What does our NGN offer our partners?
Separate service from conveyance
 Allowing Partners more space to add value
 Moving to access based charging
 Unify B2B connectivity towards Ethernet.
 Roadmap of migration from legacy to NGN operation
 Network SIP product set in development.
 Better transparency of assurance
The Customer’s Choice
CPE
NGN
Retain
SIP
TDM PBX
Router
ISDN30
C/E
Call
Server
NEW
SIP
PBX
C/E
TDM Trunk
Switch
Media
Converter
GSX
National TDM Network
?
Any questions?
Opal NGN roadmap
EthernetReach
Dedicated internet
access
Q1 09
Q2 09
Wholesale SMPF
and L2TP
Wholesale MPF
and L2TP
8Mbps, 24Mbps
Voice and broadband
8Mbps, 24Mbps
Voice and broadband
Q3 09
MPLS IP/VPN
- Fibre, DSL, leased line access
- Fully meshed, private networking
- Performance reporting for customers
Q4 09
Q1 10
Ethernet L2/L3 VPNs
E-Line, E-LAN services
3Mbps – 1Gbps options
Internet over Ethernet
VoIP
ISDN30
replacement
Q2 10
EFM/NGA
(Ethernet)
Symmetric bandwidth
up to 10Mbps
2011
Enhanced Ethernet
EOAM – E2E QoS
Burstable bandwidth options
Online performance reports
customer
exchange
metro
edge
core
400G
DWDM
10G
Diffserv+
MPLS
DF+L7
Voice
EF+L4 Data
10G
BRAs
PE Router
CU
MSAN
COS+
MPLS
L4+L7 Voice
L0+L4 Data
LAYER 2
SWITCH
COS
L4 Voice
L0 Data
MPLS
L7 Voice
L4 Data
10G
P Router
Core
Switch
10G
DWDM
NGN Network Topology and QoS
S U P E R C O R E 800G DWDM
Core
Switch
P Router
www