bts plans for its ngn eu open workshop on ngn policy and regulatory issues 22 june 2005 ittai...

BT’s Plans for its NGN

EU Open Workshop on NGN Policy and Regulatory Issues

22 June 2005

Ittai HershmanDirector, 21CN Commercial DevelopmentBT WholesaleIttai.Hershman@BT.com

CAUTIONARY STATEMENT

The material in this presentation represents current general technical thinking on how a converged IP network could be implemented. It does not necessarily represent BT's plans. The details of BT's 21st century network are still in the process of development and the subject of consultation.

THE CHANGINGLANDSCAPE• Convergence is gaining

momentum

• Convergence needs an underlying infrastructure to deliver and support it

• End users want more choice, flexibility and control

• Simplicity is key

IP

ATM

PSTN

DSL

KStream

PSTN Leased lines

PDH

Fibre

Copper

Access SDH

EndUser

~5.5ksites

~2ksites

~300sites

~100sites

~15sites

SDH - VC-4

~1ksites

SDH -VC-12

PDH Access

OUR CURRENT NETWORK

PDHAccess

IP-MPLS-WDM

DSL

Fibre

Copper

Aggregation

EndUser

~5.5ksites

~130sites

Class 5 Call Server

Content

WWW

ISP

Muilti-service access Converged Core

21CN - OUR SIMPLIFIED NETWORK

For discussion purposes.No implementation assurances

INDUSTRY CONSULTATION

• Consult21 launched Summer 2004• Director recruited from industry • 8 Working Groups, comprising:

Product Migration from Legacy to 21CN(E.g. Legacy Interconnect, PPCs, Broadband)

21CN Migration Management

Next Generation Solutions( E.g. NGN Interconnect, Network Capabilities)

• Each WG has BT and Industry Co-Chairs• Industry Steering Board (Ofcom monitors)• All proceedings published on the Internet

NGN INTERCONNECT

• Converged Point of Handover Multi-service pipe between two operators

Architecture (i.e. standards) to be agreed at NICC

• Service Specific Conveyance Multiple services will be conveyed across a PoH

Some will be price controlled (e.g. PSTN), others won’t

Some will require service specific network elements

Some services can be defined today, others can’t

For discussion purposes.No implementation assurances

HOW DEEP SHOULD PoH BE?

• BT proposed PoH at ~130 Metro node sites

• Some Operators want deeper PoH, because: They have existing fibre assets that may be stranded

They want to leverage LLU investments

They want to intermediate the wholesale market

They believe conveyance will be cheaper

• Ofcom wants deeper PoH, because: Policy of promoting infrastructure build

Greater competition for backhaul

For discussion purposes.No implementation assurances

POTENTIAL HANDOVER POINTS

For discussion purposes.No implementation assurances

Metro Node Metro Node

Tier 1 MSAN Node

MSAN Node

CMSAN

FMSAN

TAM

Legacy

MSAN Node

CMSAN

FMSAN

TAM

Legacy

MSAN Node

CMSAN

FMSAN

TAM

Legacy

CMSANTAM

Legacy

MSAN Node

~130 Sites

~1500 Sites

~4500 Sites

~5500 Sites

PRouter

COREDWDM

4/4/3SDXC

Core Node

~10 Sites

~

Voice/PCPE

PRouter

COREDWDM

4/4/3SDXC

Legacy switch

functions

Voice

Intra Metro Ethernet Network

EdgeWDM Ethernet

PE

BRAS

CMSAN

EdgeWDM

FMSAN

TAM

Legacy

~

Voice/PCPE

PRouter

COREDWDM

4/4/3SDXC

Legacy switch

functions

Voice

Intra Metro Ethernet Network

EdgeWDM Ethernet

PE

BRAS

Tier 1 MSAN Node

CMSANEdgeWDM

FMSAN

TAM

Legacy

CMSANTAM

Legacy

SERVICE CONVEYANCE PROTOCOLS

SIP-I

RTP

SIP

RTP

PNNI

SCTP

UDP

SCTP

UDP

ATM over Ethernet

Circuit Emulation

Ethernet Glue Layer

Point of Handover

C7 PSTN REPLICATION MULTIMEDIA ATM NGN PPC

For discussion purposes.No implementation assurances

Note: ATM and Circuit Emulation over Ethernet subject to further standards work.

STANDARDS CHALLENGES

• Many fora developing open standards

• BT committed to NICC/TSG process

• Sourcing standards for consideration from:

IETF, TISPAN, Metro Ethernet Forum, 3GPP, etc.

• But, localised variants cost time and money

Balance between backward compatibilityand the burden of forever carrying the past

For discussion purposes.No implementation assurances

REGULATORY FRAMEWORK

• NGNs Are Driven by Cost Savings

No one can “build it and they will come” on revenue bet

Investment requires savings flow back to shareholders

• Regulators face a difficult challenge

NGNs are disruptive to traditional boundaries

NGNs challenge past regulatory assumptions(e.g. thin & disperse vs. fat & fewer interconnect)

• Regulation needs to focus on the future, not the past

UK embarking on a new path forward: equivalence

BT’s FUTURE TECHNICAL ESTATE

21CN SUMMARY

• 21CN is the enabling infrastructure for growth at BT and for its customers

• The most ambitious business transformation programme in communications worldwide

• Represents a major investment by BT