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Pathfinder Working Group Working Group Terms of Reference Keith Fowler - Pathfinder Programme Manager.
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www.btwholesale.com/consult21
Pathfinder Working Group
BT Centre Showcase, Registration: 9.45 amStart time: 10.00 am
Pathfinder Working Group - Agenda•.Introductions
•.Terms of reference and objectives of Pathfinder Working Group
•.Cardiff - The facts of Interconnection
•.BT’s view of technical issues/risks inherent in a hybrid interconnection model during Pathfinder
•.Proposed transfer methodology from DLE to NGS
•.Requirements for Pathfinder Programme - a free form brainstorming session designed to deliver a set of requirements specific to Pathfinder.
•.AOB •Customer Communication Plan•TSG Update
www.btwholesale.com/consult21
Pathfinder Working Group
Working Group Terms of ReferenceKeith Fowler - Pathfinder Programme Manager.
Pathfinder Working GroupMembership• Industry representatives and BT Wholesale (co-chair arrangement)Proposed Terms of Reference• Phase 1 (now until June 05):
• Agree to conditions for collaboration during the Pathfinder period (Out of service Oct 05 – Dec 05, In service Jan 06 – March 06)• Capture Pathfinder Requirements from BTW Customers (close by 28-Feb) This has already begun through one-on-one calls• Agree to measurement points and reporting structure to provide all Pathfinder participants equal access to experiences and information
• Phase 2 (July 05 – April 06): • Issue of System Alternation Notices for Cardiff DLEs• Trial Industry collaboration in the migration of:
• Interconnect (target beginning migration Oct 05)• End Customers (mass migration Jan-Mar 06)
• Review of experiences and results Working Group Scope• All matters relating to migration of interconnect arrangements and consumer and
business customers to a 21CN environment, while not overlapping other working groups.
Meeting Frequency• Monthly or more frequently as required
Pathfinder Working GroupWithin Scope of Pathfinder Working Group•Determine criteria for collaboration during this period•Issue of System Alteration Notifications in July•Defined methodology for movement of end customer lines•Defined methodology for movement of services•Defined additional reporting requirements to test effectiveness of trial.
Outside Scope of Pathfinder Working Group•An agreed technical arrangement to enable DLE closure (Interconnect Working Group)•Agreed commercial arrangements for rearranging interconnects
•Charging Principles (Interconnect Working Group)•Contract Alterations (Standard Contracts Forum)
•Future interconnect (IP, etc.) (Interconnect Working Group)•LLU (Broadband and LLU Working Group)•Any other workgroup themes
www.btwholesale.com/consult21
Pathfinder Working Group
Cardiff – The facts of Interconnection
Mark Ward, Head of Interconnect & Numbering Services
Cardiff Pathfinder area - Current Interconnect Arrangements• 9 impacted DLEs - 7 in Cardiff, plus Bridgend and Pontypridd
• Cardiff DLE units: CF/TY, CF/UC, CF/UD, CF/UE, CF/UF, CF/UG, CF/UL• Bridgend DLE unit: BNP/DA; Pontypridd DLE unit: PN/DA • All Cardiff DLE units are co-located with Cardiff Iolite NGS
• 7 impacted Altnets• 80% of circuits from 3 Altnets• Volumes are for all interconnect E1s, including FRIACO
Direct E1s Indirect IEC E1s CSI E1sCardiff DLEs 334 74 0Bridgend + Pontypridd 0 39 0
334 113 0
www.btwholesale.com/consult21
Pathfinder Working Group
BT’s view of technical issues/risks inherent in a hybrid
interconnection model during Pathfinder
Risks and Issues associated with Interconnection arrangements and Pathfinder.•Risks:-•Non Movement of CP DLE Capacity prior to Pathfinder could result in:-
•Increased risk of call routing errors due to a complex data set(21CN – legacy network – CP’s network)•Increased risk of QoS issues e.g. call routing errors & over-used capacity•Any Operational issues resulting would cause increased manpower demands on both BT and CPs•Complication of eventual movement of Capacity prior to DLE closure.•Failure to fully test the full 21CN migration process and amend process if required
Risks and Issues associated with Interconnection arrangements and Pathfinder.•Issues •Known issues include:-
•Billing in line with commercial offer - EBC?•Some unsupported products post end-customer transfer e.g RBWF•Trial Contract •CPS SAD calls•Prove designs for continuity of Interconnect products to/from end customers.•Fall Back arrangements and criteria.•Availability of new 21C Interconnect Products
Mitigating RisksGoal is to migrate CP Interconnect prior to DLE end-user migration
•Provide sufficient time to assure stability for all•Avoid complex routing (21CN - NGS -CP) •Avoid need to replicate legacy/PSTN routings and data structures•Minimize impact on perceived QoS (complex call routing/’tromboning’)•Can migrate CP circuits over time without need for whole DLE at once migration•Disengage CP circuits from actual DLE closures
Pathfinder offers the opportunity to collaborate on the full migration process
• Trial methodology for moving CP Interconnect circuits over time (not directly tied to mass migration schedule)•Trial methodology for migrating end-users whole DLE at once• Provide feedback to improve processes prior to main 21C roll-out
www.btwholesale.com/consult21
Pathfinder Working Group
Proposed Transfer Methodology from DLE to NGS
Legacy TDM Support - Transfer Engineering Proposals• Aims :-• To de-risk the transfers by use of existing NGS switches and network routings.• To provide separation of agreed transfer activities from progress on 21C build and DLE closures.• To enable balanced workload for all.• Scenarios :-• 4 that will apply in most circumstances - mix and match.• Last 2 may apply to balance NGS capacity• Not exhaustive - other options inc. Ceasing Capacity, new 21C products etc.• Not prescriptive - subject to bi-lateral agreement with each individual customer.
Figure 1a - Configuration ‘1’ - ISI Direct to DLE and NGS Sites No Spare NGS CP Route Capacity - Interconnect Scenario Before Transfer
DLE SITE
CPSwitch
NGSDLE 2 2
1CN
MGW
METRONODE
3 E1s
13 E1s
NGS SITE
CP CapacityBT Capacity
DLE SITE
NGS SITE
CPSwitch
NGSDLE 2 2
1CN
MGW
METRONODE
3 E1s
3 E1s
13 E1s
Figure 1b - Configuration ‘1’ - ISI Direct to DLE and NGS Sites No Spare NGS CP Route Capacity - Interconnect Scenario After Transfer
CP CapacityBT Capacity
Figure 3a - Configuration ‘3’ - ISI Direct to NGS Site with IEC to DLE Site No Spare NGS CP Route Capacity - Interconnect Scenario Before Transfer
DLE SITE
CPSwitch
NGS
DLE 2
21CN
MGW
METRONODE
CP CapacityBT Capacity
3 E1s
NGS SITE
13 E1s
IEC
Figure 3b - Configuration ‘3’ - ISI Direct to NGS Site with IEC to DLE Site No Spare NGS CP Route Capacity - Interconnect Scenario After Transfer
DLE SITE
CPSwitch
NGS
DLE 2
21CN
MGW
METRONODE
CP CapacityBT Capacity
3 E1s
NGS SITE
13 E1s
Figure 6a - Configuration ‘6’ - ISI Direct to NGS Site with IEC to DLE Site No CP Route to Non Parent NGS - Interconnect Scenario Before Transfer
DLE SITE
CPSwitch
DLE 2
21CN
MGW
METRONODE
3 E1s
13 E1s CP CapacityBT Capacity
NGS
PARENT NGS SITE
NGS
NON PARENT NGS SITE
IEC
Figure 6b - Configuration ‘6’ - ISI Direct to NGS Site with IEC to DLE Site No CP Route to Non Parent NGS - Interconnect Scenario After Transfer
DLE SITE
CPSwitch
DLE 2
21CN
MGW
METRONODE
3 E1s
13 E1s
CP CapacityBT Capacity
NGS
PARENT NGS SITE
NGS
NON PARENT NGS SITE
3 E1s
New Route(if not
already existing)
www.btwholesale.com/consult21
Requirements Capture for Pathfinder Programme.
Pathfinder Working GroupWithin Scope of Pathfinder Working Group•Determine criteria for collaboration during this period•Issue of System Alteration Notifications in July•Defined methodology for movement of end customer lines•Defined methodology for movement of services•Defined additional reporting requirements to test effectiveness of trial.
Outside Scope of Pathfinder Working Group•An agreed technical arrangement to enable DLE closure (Interconnect Working Group)•Agreed commercial arrangements for rearranging interconnects
•Charging Principles (Interconnect Working Group)•Contract Alterations (Standard Contracts Forum)
•Future interconnect (IP, etc.) (Interconnect Working Group)•LLU (Broadband and LLU Working Group)•Any other workgroup themes
www.btwholesale.com/consult21
ADDITIONAL TRANSFER ENGINEERING SLIDES – FOR
INFORMATION ONLY
Figure 2a - Configuration ‘2’ - ISI Direct to DLE and NGS Sites Spare NGS CP Route Capacity - Interconnect Scenario Before Transfer
DLE SITE
CPSwitch
NGSDLE 2 2
1CN
MGW
METRONODE
3 E1s
13 E1s 10 used for BH traffic
NGS SITE
CP CapacityBT Capacity
DLE SITE
NGS SITE
CPSwitch
NGSDLE 2 2
1CN
MGW
METRONODE
3 E1s
Figure 2b - Configuration ‘2’ - ISI Direct to DLE and NGS Sites Spare NGS CP Route Capacity - Interconnect Scenario After Transfer
10 E1s
CP CapacityBT Capacity
Figure 4a - Configuration ‘4’ - ISI Direct to NGS Site with IEC to DLE Site Spare NGS CP Route Capacity - Interconnect Scenario Before Transfer
DLE SITE
CPSwitch
NGS
DLE 2
21CN
MGW
METRONODE
CP CapacityBT Capacity
3 E1s
NGS SITE
13 E1s
IEC
10 used
for BH traffic
Figure 4b - Configuration ‘4’ - ISI Direct to NGS Site with IEC to DLE Site Spare NGS CP Route Capacity - Interconnect Scenario After Transfer
DLE SITE
CPSwitch
NGS
DLE 2
21CN
MGW
METRONODE
CP CapacityBT Capacity
3 E1s
NGS SITE
10 E1s
Figure 5a - Configuration ‘5’ - ISI Direct to DLE and NGS Sites No CP Route to Non Parent NGS - Interconnect Scenario Before Transfer
DLE SITE
CP
DLE 2
21CN
MGW
METRONODE
3 E1s
13 E1s
CP CapacityBT Capacity
NGS
PARENT NGS SITE
NGS
NON PARENT NGS SITE
Figure 5b - Configuration ‘5’ - ISI Direct to DLE and NGS Sites No CP Route to Non Parent NGS - Interconnect Scenario After Transfer
DLE SITE
CP
DLE 2
21CN
MGW
METRONODE
3 E1s
13 E1s
CP provided (funded)
BT provided (funded)
NGS
PARENT NGS SITE
NGS
NON PARENT NGS SITE
3 E1s