consult21 information is subject to change and is for discussion purposes only. any dates/timings...

Consult21 Information is subject to change and is for discussion purposes only. Any dates/timings are the current anticipated timescales and may be subject

to change.

Consult21 Information is subject to change and is for discussion purposes only. Any dates/timings are the current anticipated timescales and may be subject to

change.

Forward looking statements – Caution advisedCertain statements in this presentation are forward-looking and are made in reliance on the safe harbour provisions of the US Private Securities Litigation Reform Act of 1995. These statements include, without limitation, those concerning: BT's plans for transformation of its networks; benefits to customers of the 21CN programme; key milestones and expected timetable for delivery of 21CN; and the benefits in relation to, for example interconnect, convergence and broadband.

Although BT believes that the expectations reflected in these forward-looking statements are reasonable, it can give no assurance that these expectations will prove to have been correct. Because these statements involve risks and uncertainties, actual outcomes may differ materially from those expressed or implied by these forward-looking statements.

Factors that could cause differences between actual outcomes and those implied by the forward-looking statements include, but are not limited to: material adverse changes in economic and financial markets conditions in the markets served by BT; supplier arrangements; future regulatory actions and conditions in BT’s operating areas; technological innovations; developments in the convergence of technologies and the anticipated benefits and advantages of new technologies, products and services, including broadband, not being realised.


change.

Agenda

1. Datastream Product Developments 2005/06

2. High Level Product Description for Flexible Access Services (FAS)

3. Consultation – Proposal for Datastream Withdrawal & Migration to 21CN FAS

4. Project Timescales


change.

Datastream Product Developments 2005/06• Removal of Datastream Port Reservation scheme – June 2005

• Launch of VP Aggregation & Stat Gain Credit schemes – June 2005

• Larger Virtual Paths – launch expected Q4 2005/06 (subject to notification)

• Datastream Max (high speed end user product) – Beta Trial expected Q3 2005/06 (subject to notification)

• Virtual Path Automation: Phase 1 – New Orders – delivered December 2004

Phase 2 – Cancellations & new order enhancements – launch expected Q4 05/06

Phase 3 – VP re-grades & re-arranges – launch expected Q1 06/07


change.

Agenda

1. Datastream Product Developments 2005/06

2. High Level Product Description for Flexible Access Services (FAS)




change.

Exchange building

CMSANs

CMSANGroups

(max 20k usersper group)

FMSAN

Dedicated BW to CMSAN groups

Dedicated BW to single CMSANs

Flexible Access Services (FAS)

Metronetwork

*

*

*

*

*

*

SP

Ingress Ethernetswitch

Egress EthernetSwitch (serves SP)

AggregateAccess (AA)

Note: Figure shows bandwidth (BW) delivery to single AA. Can deliver to any AA on any Metro.


change.

What is FAS?Flexible Access Services (FAS) allow Communication Providers (CP) to access DSL end users via an Ethernet based transport – PPPoA and PPPoEoA.

FAS comprises three basic components: Aggregate Access (AA)

SVLANS from point of handover to CMSANs or CMSAN Groups

End User Access (EUA)

It is a partially managed service, aimed at Communication Providers who want to provide their own broadband networks either to other Service Providers or directly to end users. FAS allows Communication Providers to develop and differentiate their own end user services.


change.

Aggregate Access

1) Aggregate Access at any Metro node. Potential options are:

a) Customer-sited Handover

b) In-span Handover

c) In-building Handover

2) Bandwidth:

a) 1 Gig Ethernet

b) Demand for other sizes?

c) Allow overbooking (likely to be possible – at CP risk)

3) Metro node list circulated to industry on 26th September 2005.


change.

SVLAN

1) Dedicated to a CP

a) Connect from any Aggregate Access in any Metro node.

2) Connect to single CMSAN or a CMSAN Group

a) CMSAN group will be limited to a max of 20k End Users (EUs) i.e. not the whole of a large exchange (top ~300 exchanges have more than 20k end users)

3) Shared SVLAN (under review)

4) Small increments (0.5Mb) (increments and max size to be determined)

5) Resilience anticipated to be same as on current Datastream product

6) SDSL & ADSL EUAs on the same SVLAN (day 2)


change.

End User Access (EU)1) ADSL

a) Rate adaptive upstream and downstream (upstream limit of 832kbps or possibly 432kbps -views?)

b) No fixed rate option (allows CP to control bit rate)

2) SDSL (day 2)

3) AAL5 encapsulation only

4) Protocols

a) PPPoA and PPPoEoA (auto-sensed)

b) Ethernet bridging (under review)

5) All modifications intended to be supported (FAS/IPS/DS, regrades, SP migrations, change SVLAN)

6) StandardCare / EnhancedCare

7) Multiple VCs per SDSL EUA (need further discussion to determine characteristics)

a) Mapping VCs to separate SVLANs (day 2)

8) Multiple VCs on ADSL EUA (under review)

a) Mapping VCs to separate SVLANs


change.

Agenda

1. Datastream developments for 2005/06

2. High level product description for Flexible Access Services (FAS)

3. Consultation – Proposal for Datastream withdrawal & migration to 21CN FAS



change.

For consultation - Datastream WithdrawalOptions for stopping New Supply

• Provide 12 months notice for the withdrawal of new supply on an exchange by exchange basis as FAS becomes available

•Proposal to stop New Supply either

12 months after FAS is available at the exchange or, when an agreed percentage of the UK population is covered by FAS

Proposal for Withdrawal of Datastream

•12 month notification for the withdrawal of Datastream

•Product withdrawal, 3 months after FAS has been rolled out to all current Datastream exchanges

Options for contracting with New Communication Providers

• No new Communication Providers on Datastream from launch of Flexible Access Services (FAS) or,

when an agreed percentage of the UK population is covered by FAS

This would apply to all exchange areas where FAS is available.


change.

For consultation - 21CN Migration from Datastream to FAS• Not a forced migration - option for CPs to stay on Datastream, until Datastream is withdrawn

• Planning for FAS to Datastream migrations

•Planning for End User Access migrations: FAS to IPstream

Further work

• Definition of 21CN migration process for Datastream to FAS customers

• Product Commercials


change.

For consultation - 21CN Migration from Datastream to FASGeneral:

• FAS config. details provided to the CP at least 2 days before migration

• Migration will require jumpering, with EU outage

Bulk – as part of DSLAM offload:

• Most efficient & least End User impacting (may give shorter EUA outage times)

• Changeover date should be given (may not be guaranteed)

• All of the CP’s EUAs within an exchange

Bulk – separate from DSLAM offload:

• Planned as now - completed on a negotiated date

• CP-selected set of EUAs

Singleton – any time

• Aim to complete on Customer agreed date


change.

Agenda

1. Datastream developments for 2005/06

2. High level product description for Flexible Access Services (FAS)




change.

Datastream Withdrawal

• 21CN roll-out and migration proposals published 26/09/2005

• Start consultation on withdrawal of Datastream & migration considerations to the new FAS product on 21CN 30/09/2005

• Confirm list of current enhancements to be launched on Datastream 30/09/2005

• Propose a process for product withdrawal 31/03/2006

G

G

G

G


change.

FAS Product - Launch Plan

• Requirements capture 14/07/2005

• High level Product Description (presentation) 29/09/2005

• High level Product Design complete (slides distributed) 30/09/2005 A

• Publish draft SPINs (distribute document) 5/12/2005 G

• Detailed Product Description published 31/01/2006 G

• Pricing and Terms and Conditions 31/03/2006

G

• Handbook, STINs, CRF published 31/03/2006 G

• Alpha trial complete 30/06/2006 G

• Customer trial (on 21CN) Summer ‘06 G

• Launch (when 21CN migrations commence) 2nd half of

‘06 G

G

G


change.

Abbreviations usedAA Aggregate Access

AAL5 ATM Adaptation Layer 5 (LAN transport)

ADSL Asymmetric Digital Subscriber Line

ATM Asynchronous Transfer Mode

BTW BT Wholesale

BW Bandwidth

CMSAN Copper MSAN

DS Datastream

EUA End User Access

FAS Flexible Access Services

FMSAN Fibre MSAN

IP Internet protocol

IPS IPstream

MSAN Multi Service Access Node

PPPoA Point to point protocol over ATM

PPPoE Point to point protocol over Ethernet

SDSL Symmetric Digital Subscriber Line

SIN Service Information Note

SP Service Provider

SPIN Service Provider Information Note

STIN Service Trial Information Note

SVLAN Service Virtual Local Area Network

VC Virtual Circuit

Consult21 Information is subject to change and is for discussion purposes only. Any dates/timings are the current anticipated timescales and may be subject

to change.

consult21 information is subject to change and is for discussion purposes only. any dates/timings...

Documents

current anticipated

forwardlooking statements

consult21 information

discussion purposes

project timescales

anticipated benefits

cn fas

certain statements