Transcript 21CN Legacy Interconnection Working Group

21CN Legacy Interconnection Working Group
17th December 2004
Auditorium
City Place, Gatwick
Agenda
The purpose of the Working Group meeting today is
to discuss the maintenance of existing legacy
interconnect services during the establishment of the
21CN network.
To this purpose ,after previous discussions and
feedback from industry, BT will present a proposal
setting out the commercial arrangements arising from
the physical changes to the network.
In addition BT will set out a proposal for the future
architecture/routing arrangements for discussion and
to obtain industry’s feedback
Agenda
Introductions
Purpose of meeting
BT’s commercial proposal
Operational Issues
Contractual aspects and timescales
Discussion
LEGACY INTERCONNECTION IN 21CN
17 DECEMBER 2004
ANTHONY SHEPPARD
SENIOR PORTFOLIO STRATEGY MANAGER
FORWARD LOOKING STATEMENTS - CAUTION ADVISED
Certain 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
AGENDA
BACKGROUND & GENERAL PRINCIPLES
COMMERCIAL PRINCIPLES
COMMERCIAL PROPOSALS
What is 21CN and why is change beneficial for the industry?
• 21CN represents a multi-billion pound capital investment by BT for the
benefit of the industry and the industry's customers
• 21CN is the enabling infrastructure for growth and opportunity for the
industry
• 21CN will enable compelling new products and services for all operators
to market to their customers.
• BT is committed to working closely and openly with industry to ensure
that the benefits are maximised for operators, the economy and society.
For discussion purposes.
No implementation assurances
Subject to Contract
BT’s Approach to Interconnect Portfolio
• Continue to provide any-any voice connectivity in consultation with
customers
• Work with customers to ensure appropriate inter-operability of new
services, for example through access to “network hooks”
• Provide new forms of Interconnect for the new IP world
• Discharge its regulatory obligations in a professional manner
• Minimise inconvenience to customers during the implementation of 21CN
• Support reasonable ongoing requirements for TDM interconnect until
2010
For discussion purposes.
No implementation assurances
Subject to Contract
Principles
• An equitable, but affordable commercial agreement.
• BT will not indemnify altnets from investment risk due
to obsolescence (e.g. Dial IP over the coming years)
• Recognise Ofcom’s policy of encouraging infrastructure
build-out.
• Recognise the re-arrangement process is years long and
the interconnect picture will be changing between offer and
implementation.
Interconnect at DLEs
For discussion purposes.
No implementation assurances
Subject to Contract
30
25
CSI
20
ISI via NGS sit es
ISI (Non-NGS sit es)
15
IEC (from non-NGS
sit es)
ISI (all)
10
5
0
Operat ors
I/X Links (000)
Key Migration Issues for Customers
BT closes switches • Customer traffic must be rearranged
• Value of POCs at non-NGS sites
• ISI users at DLE-only sites face biggest disruption
• FRIACO at DLEs expected to die due to broadband penetration
• How will SIA Systems Alteration clause be applied?
• Under existing contractual terms, the change process is designed for
BAU rather than large tranche one-offs
• What happens to DLE conveyance rate?
For discussion purposes.
No implementation assurances
Subject to Contract
BACKGROUND & GENERAL PRINCIPLES
COMMERCIAL PRINCIPLES
COMMERCIAL PROPOSALS
Contractual Principles & Issues
• SIA Systems Alterations Clause
• BT meets reasonable agreed costs of network engineering alterations to
Operator network
• Connection Charge rebate applies if Capacity is ceased
(SIA, Ann. A, App. B, 4)
• But current contract terms ineffective for large one-off network changes
• We need –
• upfront agreement on criteria for Operator cost reimbursement
• early agreement on terms & process for dealing with complex alterations
• to provide certainty for both BT and our customers
For discussion purposes.
No implementation assurances
Subject to Contract
Backhaul from Closing DLEs
• All backhaul Connection costs met by BT
• Ongoing backhaul circuit costs met by BT for 6 months
• Applies to ISI Voice only at all closing DLE switches
• CSI: BT will simply re-point or cease circuits as agreed with customer
• Signalling aspects:
• IUP traffic backhauled to NGS
• ISUP circuits may be extended to Metro Node on same terms by agreement, if
required
• FRIACO
• Decline in demand needs to be managed collectively by industry
• Need to consolidate off DLEs?
• Your views invited
For discussion purposes.
No implementation assurances
Subject to Contract
Conveyance Charges for Re-located DLE Circuits
• Local Call Termination will continue to be charged for 6 months
• smooth impact of loss of competitive model based on legacy architecture
• Applies to ISI Voice at all closing switches
• Dial IP
• Residual demand needs to be managed collectively by industry to meet
remaining end users’ requirements
• Need to consolidate off DLEs?
• Specialist ad hoc group?
• Your views invited
Views and Comments please!
Is there a better way of doing this?
Annex A: Can I install Capacity after Notice of a Switch Closure?
BT proposals
• From date Notice given under SIA:
• New POCs for new customers or orders for new transmission systems/IEC access at
customer’s risk (BT will not meet any costs of rearrangement or backhaul); Local Call
Termination not available after DLE closure;
• Customers may bring into use spare capacity on existing ISI transmission systems
already installed before Notice given and qualify for BT proposals on backhaul and Local
Call Termination.
• From 7 months before Closure Date:
• No new POCs accepted;
• No new capacity or IECs to be ordered;
• Customers may bring into use spare capacity on existing ISI transmission systems
already installed before Notice given and qualify for BT proposals on backhaul and Local
Call Termination.
• From Closure Date:
• No expansion of capacity allowed under SIA;
• Installed capacity on existing ISI transmission systems brought into use will no longer
qualify for BT proposals on backhaul and Local Call Termination
Annex B: Proposed Architecture
Today
4. If required,
operators with
IECs to closing
DLE have IEC
redirected to
NGS, if IUP is
retained
21CN
New
interconnect:
IP or ISUP
PoC
IEC (ISUP)
NGS
IEC
IEC (ISUP)
Metro node
(ISUP)
PoC
NGS
(IUP / ISUP)
DLE
3. If required,
operators with
PoC at closing
DLE provided
with IEC to
NGS, if IUP is
retained
IEC
(IUP/ISUP)
Conc
1. IUP not
available on
21CN
MSAN
For discussion purposes.
No implementation assurances
Subject to Contract
2. IUP continues to
be available on
NGS until
withdrawal.
Anticipated at the
end of 21CN
implementation
Maintenance of Legacy Interconnect - Operational Issues
Mark Ward
Interconnect and Numbering Services
Design and Implementation
Head of
BT Wholesale - Network
Typical Existing Architecture
NGS SITE
DLE
Note - 90% all ISI Capacity passes through an NGS site.
NGS
CP
Switch
T
X
M
Conc
TDM I/C
IUP/UK-ISUP
IEC
DLE SITE
DLE SITE
DLE
DLE
T
X
M
Conc
Conc
T
X
M
Example of Future Architecture
TDM
IP
Call
Signaling
Gateway
Sig
Server
TDM
Gateway
21 CN
Voice / Data
Metro
Node
CPs
Interim Arrangements
TDM
IUP/UK-ISUP
NGS
Call
Server
Signaling
Gateway
Sig
CP
Switch
TDM
Gateway
21 CN
Voice / Data
Metro
Node
UK-ISUP
Process
Tied to agreement on Commercials and new System Alteration Process
(SAN)
Intend to provide SANs in tranches - 1year at a time (?)
Detailed discussions and agreement with Technical Account Managers on
transfer method required.
Detailed programme with dates fully agreed .
Routes moved off closing DLEs approx. 6 months in advance of DLE
closure (prevents dependency and any late running problems as
previously experienced)
Transfer Scenario examples
1.Capacity no longer required - Cease
2. Capacity available at NGS - Cease & data-change
3. Capacity provided via NGS site - Re-jumper at NGS
4. Capacity provided via non-NGS site - provide Backhaul
5. UK-ISUP - direct MGW connection available if required.
6. Route Consolidation possibilities.
7. CSI - BT termination transferred as agreed
Example of detailed Transfer Scenario
The following is an example of work in progress to define a range of
transfer scenarios for discussion with individual CPs.
MSAN
DLE1 SITE
NGS

DLE 2
3 E1s
CP
M
G
W
12 E1s
10 E1s (BH use 6 E1s)
2
1
METRO
NODE
C
N
MSAN
14 E1s
4 E1s
IEC
NGS SITE

Figure 1 - Option ‘A’ - Transfer Using CP to NGS Route Spare Capacity
Interconnect Scenario Before Transfer
DLE 1
DLE2 SITE
MSAN
DLE1 SITE
NGS

DLE 2
3 E1s
CP
M
G
W
15 E1s
10 E1s (BH use 6 E1s)
2
1
METRO
NODE
C
N
MSAN
18 E1s
4 E1s
IEC
NGS SITE

Figure 2 - Option ‘A’ - Transfer Using CP to NGS Route Spare Capacity
Preliminary DLE to NGS Route Enhancement
DLE 1
DLE2 SITE
MSAN
DLE1 SITE
NGS

DLE 2
3 E1s
M
G
W
15 E1s
10 E1s (BH use 6 E1s)
CP
2
1
METRO
NODE
C
N
MSAN
AAR
18 E1s
4 E1s
IEC
NGS SITE

Figure 3 - Option ‘A’ - Transfer Using CP to NGS Route Spare Capacity
DLE 1 Transfer - Stage 1
AAR
DLE 1
DLE2 SITE
MSAN
DLE1 SITE
NGS

DLE 2
3 E1s
M
G
W
15 E1s
10 E1s (BH use 10 E1s)
CP
2
1
METRO
NODE
C
N
MSAN
AAR
18 E1s
4 E1s
NGS SITE

Figure 4 - Option ‘A’ - Transfer Using CP to NGS Route Spare Capacity
DLE 1 Transfer - Stage 2
AAR
DLE 1
DLE2 SITE
MSAN
DLE1 SITE
NGS

DLE 2
3 E1s
CP
M
G
W
15 E1s
10 E1s (BH use 10 E1s)
2
1
METRO
NODE
C
N
MSAN
18 E1s
4 E1s
NGS SITE

Figure 5 - Option ‘A’ - Transfer Using CP to NGS Route Spare Capacity
DLE 1 Transfer - Stage 3
DLE 1
DLE2 SITE
MSAN
DLE1 SITE
NGS

DLE 2
3 E1s
CP
Combined
Route
M
G
W
15 E1s
10 E1s
2
1
METRO
NODE
C
N
MSAN
Circuits
grown onto
NGS Route
18 E1s
4 E1s
Combined Route
14 E1s (BH use = 13 E1s)
Used for DLE 1 and DLE 2 traffic
NGS SITE

Figure 6 - Option ‘A’ - Transfer Using CP to NGS Route Spare Capacity
DLE 2 Transfer - Stage 1
DLE 1
DLE2 SITE
MSAN
DLE1 SITE
NGS

DLE
2
AAR
3 E1s
M
G
W
15 E1s
2
1
METRO
NODE
C
N
AAR
CP
10 E1s
MSAN
Combined
Route
18 E1s
4 E1s
Combined Route
14 E1s (BH use = 13 E1s)
Used for DLE 1 and DLE 2 traffic
NGS SITE

Figure 7 - Option ‘A’ - Transfer Using CP to NGS Route Spare Capacity
DLE 2 Transfer - Stage 2
DLE 1
DLE2 SITE
MSAN
DLE1 SITE
NGS

DLE 2
M
G
W
15 E1s
CP
10 E1s
2
1
METRO
NODE
C
N
MSAN
Combined
Route
18 E1s
4 E1s
Combined Route
14 E1s (BH use = 13 E1s)
Used for DLE 1 and DLE 2 traffic
NGS SITE

Figure 8 - Option ‘A’ - Transfer Using CP to NGS Route Spare Capacity
DLE 2 Transfer - Stage 3
DLE 1
DLE2 SITE
Information Provision
Metro Node list on NIPP - still subject to revision - detailed address info via
NISCC.
DLE closure timetable as soon as reasonably stable
Detailed per CP information per DLE provided with SAN
Completed Transfer of BT number ranges to NGN advised probably via
NIPP.
Any Questions or Comments ?