Transcript Slide 1

Going faster and staying in control
- Building the world’s biggest NGN
Tim Hubbard
Head of Technology Futures
During the next 60 minutes I propose to discuss:-
Why did BT begin 21CN
An introduction to 21CN: the technology,
architecture and delivery programme
The potential opportunities enabled by 21CN
21CN Setting some context
BT’s network architecture today
PSTN
Copper
PSTN
DPCN
KiloStream
ATM
DSL
IP
Fibre
SDH - MSH
SDH
SDH- mesh
- mesh
DWSS
PDH
Today
MSC
MSC
Signalling and
Speech traffic
DSC
DSC
Call
control
DLE
DLE
Conc
Conc
PSTN
21CN it’s big and bold
Not simply network
transformation…a radical
overhaul of BT’s business and
systems
Supporting a fundamental shift in
customers’ new requirements and
expectations
21C
Customer
Experience
Web21C
Core
network
convergence
Remake
the
Portfolio
21CN evolution
PSTN
Copper
PSTN
DPCN
KiloStream
ATM
DSL
IP
Fibre
SDH - MSH
SDH
SDH- mesh
- mesh
DWSS
PDH
Today
Multi -service access
Converged core
Copper
Call
Control
Ethernet Backhaul
Fibre &
Copper
WWW
IP/MPLS
MSAN
Content
ISP
I/connects
Wireless
Current thinking. No implementation assurances
Massive network simplification
21CN
Other CPs
21CN network architecture
Call Server: Carries out
Directory:core
Holds all
Converged
“call control”
by setting up
MSAN: delivers
either copper
Session Border Controllers:
numbers, whether they are
tearing
multi
based, fibreand
based
or down
Gateway for customer traffic
on 21CN, legacy PSTN,
media
communications
wireless based
services
tobetween 21CN and legacy
other CP network, etc
sessions, etc
end customers
PSTN/other CP networks
Call
Copper
Control
WWW
MSAN: Country
Ethernetspecific
Backhaul
Fibre &
IP/MPLS
Copper
MSAN
Content ISP
Multi -service access
Wireless
MSAN: Converts analogue
Signalling Firewalls: Gateway
PSTN speech into VoIP
for signalling traffic to/from
21CN and legacy PSTN and
MSAN: Copper version has other CP networks
“combi card” functioning as
DSLAM for broadband and
concentrator for PSTN
Other
CPs
BRAS: Broadband service
delivery point (mainly UK)
21CN Separating speech and control
Metro/Core
21CN
MSAN
PSTN
OCP
MSAN
21CN Resilience
Service
Network
MSAN
Metro
Core
• UK government approved principles applied to 21CN
globally
• Physical and logical resilience
• Services “homed” to two discrete source points
• Service and network availability and quality at least
equal to traditional services
De-couple each “layer”
21CN Equivalence of Input
Comms Providers
Point of
Interconnect
Last mile
access
End
Users
MSAN
End customer service (any CP)
IP/MPLS
Core
Openreach Network Backhaul
Services portfolio
Infrastructure (BTD/BTO)
MSAN POP
Perceived areas of bottleneck by regulator
BT Services
Metro/Core
POP
21CN progress
Service led Broadband
migration in the UK started
(Oct 07)
Customer led Wholesale
Ethernet service delivery in
the UK (Jan 08)
35% of UK national
infrastructure operational
PSTN Pathfinder progressing
in South Wales
Delivered to 164
countries globally
Develop and test brand new
product portfolio
Shift to customer led migrations
21CN migration process
BT serving
exchange building
End customer site
DSLAM
20CN
PSTN switch
Access network
copper pairs
ISDN
MSAN
21CN
Main
frame
•Deployment of BTs NGN
•Disconnect copper pairs from 20CN and re-connect onto 21CN
•No change to CPE
•No change to home or office wiring
•No change to copper access network
•No need for end customer site visit
21CN architecture blueprint
Configuration
of products
& services
Assembly
of services
& processes
Customers
SDK (BT & 3rd party applications)
Capabilities
Software Development Platform
Service Creation Engine
Management & IT
Global
platforms
21CN global network platform
Enabling new levels of competition
PSTN
Call
Server
Non BT PSTN
Non BT PSTN
(CP control)
BGWs
Non BT PSTN and
Broadband
Gateways
(B/Band)
To other
CPs
To other
CPs
CMSAN
Gateways
Control
(PSTN)
Non BT Broadband
MSAN
21CN Backhaul
Network
Metro Node
To other
CPs
Going forward with 21CN??
- potential services
Personalised infotainment
and product bundling to
customers
Service delivery from a
“single point”
Discrete personalised
advertising
Third party service “mash in”
and “plug in” through open
APIs and SDKs
Global, virtual supply chains
Current challenges being addressed
OSS convergence
Implications of UK NGA
consultation
In conclusion
• 21CN is carrier grade, secure and industrialised
• Customer experience on 21CN is paramount
• 21CN moves BT from service specific platforms to
multi service platform, delivering massive
simplification
• 21CN is enabling new service delivery over a global,
real time, open platform
Questions

Answers