Wholesale Optical Product Handbook

Wholesale Optical Product handbook

March 2018 Version 7

Contents Page

1 Wholesale Optical overview 4 2 Wholesale Optical description 5 2.1 introduction 5 2.2 introduction 7 2.3 Customer access and interface presentation 8 2.4 Service bandwidths supported and interface types 10 2.5 Wholesale Optical services 12 2.5.1 BT core node to BT core node 12 2.5.2 On-net data centre node to On-net data centre node 13 2.5.3 BT core node to On-net data centre node 14 2.5.4 Customer site to customer site 15 2.5.5 Customer site to BT core node service 22 2.5.6 Customer site to On-net data centre node service 27 2.6 Network terminating equipment 32 2.7 Resilience Options 32 2.7.1 Standard service 33 2.7.2 Resilience Option 1 Service 33 2.7.3 Resilience Option 2 Service 34 2.8 Supplier information notes 36 2.9 Performance and Class of Service 36 3 BT Wholesale Optical service availability and performance 37 3.1 Service availability 37 3.2 Repair times 37 3.3 Packet Loss 37 3.4 Service bandwidths supported and interface types 38 3.5 Security accreditation 38 3.6 Service credits 38 3.6.1 Late delivery credit 38 3.6.2 Service level agreement breach credit 39 3.7 Optical route maps 39 4 Wholesale Optical commercials 40 4.1 Pricing 40 5 Wholesale Optical processes 41 5.1 Service order types 41 5.1.1 Provide 41 Issued by: Tim Hubbard Page 2 of 53 Issue no: 7 Date: 01/03/2018

5.1.2 Cease 41 5.1.3 Migrate 41 5.1.4 Upgrade 41 5.1.5 Modify 42 5.1.6 Amend 42 5.2 Placing an order 42 5.3 Contractual delivery date 42 5.4 Order progress and delivery timelines 43 5.5 Excess construction charges 43 5.6 End to End testing 44 5.7 Customer service plan and handover document 44 6 Wholesale Optical fault management 45 6.1 Raising a fault 45 6.2 Proactive fault management 45 6.3 Planned engineering works (PEW) 45 7 Wholesale Optical billing 46 8 BT Wholesale contact information 47 9 Glossary of terms 48 10 Document change control 49 Annex A 49 On-net data centres 52

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1 Wholesale Optical Overview

Wholesale Optical delivers high bandwidth symmetric, point to point connectivity between customer equipment installed at the following locations:-

 BT exchanges

 Customer’s own premises

 Third party locations including data centres and UK cable landing stations.

Table 1 shows the customer facing interfaces supported by Wholesale Optical

Ethernet Fibre Chanel Transport

10GE 1Gb OTU2

40GE 2Gb OTU2e

100GE 4Gb OTU4

8Gb

10Gb Table 1: Client interfaces supported

Wholesale Optical is delivered using Ciena 6500 Dense Wave Division Multiplexing (DWDM) Reconfigurable Optical Add Drop Multiplexers (ROADMs) installed in the BT Core Nodes and at key third party locations including data centres, enabling a secure, always on, UK national service (excluding Kingston upon Hull, Isles of Scilly and the Channel Isles) to be provided.

The ROADMs enable BT to configure customer connections across BT’s 21CN optical core network from a central network operations centre.

Wholesale Optical has a minimum end-to-end target availability of 99.7%, a maximum one way latency of <6ms, and includes a 24/7 maintenance package within tariff, subject to BT’s terms and conditions for the service.

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2 Wholesale Optical Description

2.1 Introduction A Wholesale Optical solution is comprised of two primary components

1. Core network optical connectivity between Ciena 6500 DWDM multiplexers that form the 21CN optical core network.

2. Access connectivity from the customer’s equipment to the nearest Ciena 6500 DWDM multiplexers

The core Ciena 6500 DWDM multiplexers (Optical Points of Presence) are installed at BT Core Nodes, and key third party locations including public data centres and UK cable landing stations. This breadth of coverage enables BT Wholesale to deliver a national, high bandwidth service.

The DWDM wavelengths between the Optical Points of Presence (PoPs) are 100Gb, and can either be shared across several customers or dedicated to a single customer depending on customers’ requirements. Each fibre between two Optical PoPs can support up to 88 wavelengths.

Annex A provides a list of BT Core Nodes and third party locations where BT’s Ciena 6500 Optical PoPs are installed.

The access connectivity from the customer’s equipment to the nearest Ciena 6500 Optical PoP is determined by the location of the customer’s equipment.

Table 2 shows the access product options and NTE provider depending on the location of the CPE.

Customer Equipment Access Solution NTE provider Notes Location

BT Core Node Openreach Internal Cablelink N/A

Non BT Core Node BT Openreach EBD Openreach exchange

“On net” data centre Data centre fibre cross Customer’s responsibility to order N/A * connect fibre cross connect

Openreach EAD, OSA or Off net data centre OSEA6500 depending on Openreach customer requirements

Customer has fibre between own Customer premise Openreach External Cablelink N/A premises and nearest 21CN Core/Metro Node

Openreach EAD, OSA or Customer premise OSEA6500 depending on Openreach customer requirements Table 2: Access product options and NTE provider

* An on-net data centre is a non BT owned data centre where BT has installed a Ciena 6500 Optical PoP. A list of the on-net data centres is provided in Annex A

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More details of the access solutions and how they would be deployed are given in Section 2.5.

Details and descriptions of the Openreach access products can be found on the Openreach website www.openreach.co.uk

When deployed in public data centres, whether on-net of off-net, or cable landing stations it is the customer’s responsibility to arrange for fibre connectivity from their equipment to the Wholesale Optical PoP.

Because Wholesale Optical is a layer 1 transport solution, all Ethernet, MPLS and IP packet header information including VLAN information, IP addresses, MPLS labels, QoS, etc are carried transparently by the product.

Wholesale Optical can carry Ethernet jumbo frames up to 9000 bytes long, but does not support sub-rating of bandwidth, eg 2GB of bandwidth over a 10Gb circuit. The customer gets the full 10GB of bandwidth on a 10Gb circuit.

Figures 1-4 below show some example Wholesale Optical solutions and when the different access products might be used.

Figure 1: Wholesale Optical where the customer equipment is located in the MUA space of a BT Core Node at both ends.

Figure 2: Wholesale Optical where the customer equipment is located in an on-net data centre at one end and their own premises at the other end.

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Figure 3: Wholesale Optical where the customer equipment is located in the MUA space of a BT Core Node at one end and their own premises at the other end.

Figure 4: Wholesale Optical where the customer equipment is located in their own premises at both ends.

2.2 Introduction Wholesale Optical product is delivered as a point to point circuit over the 21CN core DWDM network as shown in figure 5 below.

Figure 5: End to end Wholesale Optical solution.

Although only the Ciena 6500 Optical PoPs that connect to the customer’s equipment are shown in figure 5, and in the other solution diagrams throughout this product handbook, the routing of the wavelength across the 21CN optical core network may be via none, one or more intermediate BT Core Nodes.

Ideally, the wavelength will pass all-optically through any intermediate BT Core Nodes and will be the same wavelength and frequency end-to-end.

However, if the path length is too great and/or there are too many intermediate BT Core Node hops, the accumulation of optical losses may force the electrical regeneration of the wavelength. This is done using back-to- back wavelength transponder cards where the connection between the cards is at “OTU” level, i.e. the signal is not

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broken back to client interface level. This regeneration is a Business As Usual (BAU) capability on the 21CN optical core network. 2.3 Customer Access and Interface Presentation

The Wholesale Optical service handoff to the customer’s equipment (CPE) will be determined by the location of the customer’s equipment and the resilience option required.

Details of the resilience options and the service levels associated with them can be found in section 2.7.

Where the CPE is installed in the BT Core Node MUA space or an on-net data centre, the service handoff to the customer will be via an optical patch panel with either Standard Connector/ Angled Polished Connectors (SC/APC) or Little Connectors (LC) or Standard Connectors (SC).

The SC/APCs or LCs or SCs will be the Wholesale Optical Service Demarcation Point as shown in figure 6 below. The optical patch panel can be either a standard patch panel supporting 12 SC/APCs or 12 LCs or 12 SCs, a high density patch panel supporting 24 LCs.

Figure 6: CPE installed in customer’s own cabinet in BT Core Node MUA space. (Standard connectivity shown).

Where the CPE is installed on the customer’s own premises and they have their own fibre into a BT Core Node, the service handoff to the customer will be via a cable splice in the cable chamber of the BT Core Node. The cable splice will be the BT Service Demarcation Point of the Wholesale Optical solution as shown in figure 7 below.

Figure 7: CPE installed at own premises, and has own fibre installed to BT Core Node cable chamber (Standard connectivity shown). Issued by: Tim Hubbard Page 8 of 53 Issue no: 7 Date: 01/03/2018

Where the CPE is installed in an on-net data centre, the service handoff to the customer will be via an optical patch panel installed in the BT cabinet/room, cage or Meet Me Room with either Standard Connector/ Angled Polished Connectors (SC/APC) or Little Connectors (LC), Standard Connectors (SC). The location of the optical patch panel will be determined by the processes/options applied by the owner of each on-net data centre.

The SC/APCs or LCs or SCs will be the Wholesale Optical Service Demarcation Point as shown in the Figure 8 below. The optical patch panel can be either a standard patch panel supporting 12 SC/APCs or 12 LCs or 12 SCs, or a high density patch panel supporting 24 LCs).

Figure 8: CPE installed at on-net data centre. (Standard connectivity shown).

* It is the customer’s responsibility to order the fibre cross connect from the data centre owner and manage its delivery

Where the CPE is installed on the customer’s premises the service handoff to the customer will be the patch panel presenting the customer interface on the Openreach supplied NTE installed at the customer’s premises as shown in figure 9 below.

Figure 9: CPE installed at customer’s premises and dark fibre access used. (Standard connectivity shown).

Details and descriptions of the Openreach access products can be found on the Openreach website www.openreach.co.uk

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2.4 Service bandwidths supported and interface types

The Wholesale Optical product supports the following services:-

 Ethernet

 Fibre Channel

 Transport

Table 3 shows the bandwidth options supported on the customer facing interface cards.

Ethernet Fibre Chanel Transport

10GE 1Gb OTU2 (10Gb)

40GE 2Gb OTU2e (10Gb)

100GE 4Gb OTU4 (100Gb)

8Gb

10Gb Table 3: Bandwidths supported by Wholesale Optical

The customer facing interface cards used will be determined by the customer’s requirements, a choice of service interfaces types are offered through the different customer facing optical interfaces.

Table 4 below lists the service interface types supported by Wholesale Optical.

Customer Interface Type Pluggable Type Interface

1Gb FC MX (MMF, 850nm) SFP SM (SMF, 1310nm)

2Gb FC MX (MMF, 850nm) SFP SM (SMF, 1310nm)

4Gb FC MX (MMF, 850nm) SFP SM (SMF, 1310nm)

8Gb FC FC800-MX-SN-I (MM 850nm) XFP or SFP+ FC800-SM-LL-L (SM 1310nm) XFP or SFP+

10Gb FC FC1200-MX-SN-I (MM 850nm) XFP or SFP+ FC1200-SM-LL-L (SM 1310nm) XFP or SFP+

10GE LAN PHY 10GBase-LR/LW (SM 1310nm) XFP or SFP+ 10GBase-ER/EW (SM 1550nm) XFP or SFP+

10GE WAN PHY 10GBase-LR/LW (SM 1310nm) XFP or SFP+ 10GBase-ER/EW (SM 1550nm) XFP or SFP+

100GE LR4 (4x25G SM) CFP SR4 (850nm MM) CFP

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SR10 (850nm MM) CFP OTU2 OTU2 / OTU2e (SM 1310nm) XFP or SFP+ OTU2e OTU2 / OTU2e (SM 1310nm) XFP or SFP+

OTU4 LR4 (4x25G SM) CFP

SR10 (850nm MM) CFP

Table 4: Client interfaces supported

Table 5 below lists the customer facing interface types supported by Wholesale Optical and their associated power margins for both transmit and receive.

Supported Client Interface Receiver Receiver Transmit Transmit Rates Type Minimum Overload Minimum Overload (dBm) (dBm) (dBm) (dBm)

1Gb Fibre Channel MM (850) -14 0 09 -2.5

1Gb Fibre Channel SM (1310) -17.2 -3 -11.2 -3

2Gb Fibre Channel MM (850) -14 0 09 -2.5

2Gb Fibre Channel SM (1310) -17.2 -3 -11.2 -3

4Gb Fibre Channel MM (850) -14 0 09 -2.5

4Gb Fibre Channel SM (1310) -17.2 -3 -11.2 -3

8Gb Fibre Channel MM (850) -11.2 0 -8.2 0

8Gb Fibre Channel SM (1310) -13.8 +0.5 -8.4 +0.5

10Gb Fibre Channel MM (850) -11.2 -1 -7.5 -1

10Gb Fibre Channel SM (1310) -14.4 +0.5 -8.2 +0.5

10GE LAN PHY, 10GE SM (1310) -11 -1 -6 -1 WAN PHY

10GE LAN PHY, 10GE MM (850) -11.2 0 -8.2 0 WAN PHY

100GE SM (1310) -8.6 4.5 -2.3 4.5

100GE MM (850) -8.6 4.5 -2.3 4.5

100GE MM (4x25G) -8.6 4.5 -2.3 4.5

OTU2 SM (1310) -11 -1 -6 -1

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OTU2e SM (1310) -13 -1 -6 -1

OTU4 MM (850) -8.8 +4 -2.5 +4

OTU4 MM (4x25G) -8.8 +4 -2.5 +4

Table 5: Customer interface type and associated power margins

2.5 Wholesale Optical Services Wholesale Optical can be provided between the following end points.

BT Core Node On-net Data Customer Site Centre Node

BT Core Node Yes Yes Yes

On-net Data Centre Node Yes Yes Yes

Customer Site Yes Yes Yes

Table 6: End Point Options for Wholesale Optical Services

A BT Core Node is one of the 106 exchanges that make up BT’s UK optical core network where BT has deployed a Ciena 6500 Optical PoP. A list of the BT Core Nodes is provided in Annex A

An on-net data centre is a 3rd party data centre where BT has deployed a Ciena 6500 Optical PoP. A list of on-net data centres is provided in Annex A.

The client interface card provided in the Ciena 6500 Optical PoP will be determined by the customer’s requirements.

 Table 4, section 2.4 provides a breakdown of the cards that could be used and the Wholesale Optical services each supports

 Table 5, section 2.4 shows the power levels on the transmitter and receiver port customer interfaces.

The following examples of Wholesale Optical services are for Standard (unprotected) delivery. Please see Section 2.7 for details on the resilient service options.

2.5.1 BT core node to BT core node A Wholesale Optical Service between two BT Core Nodes will be provided using either separate client interface and wavelength transponder cards, or a combined client interface/wavelength transponder card installed into existing Ciena 6500 Optical PoPs in 21CN Core Nodes. The card(s) used will be determined by the customer’s requirements.

The connectivity between the Ciena 6500 Optical PoPs (located in the 21CN Core Area of the BT Core Node) and the customer equipment (located in the Multi-User Area (MUA) of the BT Core Node) will be via an Openreach Internal Cablelink product.

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A list of BT Core Nodes where Ciena 6500 Optical PoPs are deployed can be found in Annex A.

Figure 10 shows a 1x10GE end-end service between two BT Core Nodes.

Figure 10: Core Node to Core Node Wholesale Optical Service

Figure 11 shows a 4xOTU2e end-end service between two Core Nodes.

Figure 11: Core Node to Core Node Wholesale Optical Service

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3. 2.5.2 On-net data centre node to On-net data centre node The Wholesale Optical Service between two On-net Data Centre Nodes will be provided using either separate client interface and wavelength transponder cards, or a combined client interface/wavelength transponder card installed into existing Ciena 6500 Optical PoPs in On-net Data Centre Nodes. The card(s) used will be determined by the customer’s requirements.

The connectivity between the Ciena 6500 Optical PoPs’ patch panel and the customer equipment will be via a Data Centre fibre Cross-Connect.

This fibre Cross-Connect will not be provided as part of the Wholesale Optical Service but must be ordered by the customer directly from the Data Centre operator; the Wholesale Optical Service handoff point will be on the BT patch panel associated with the Ciena 6500 Optical PoP. For more information see section 2.3

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Figure 12 shows a 1x10GE end-end service between two On-net Data Centre Nodes.

Figure 12: On-net Data Centre Node to On-net Data Centre Node Wholesale Optical Service.

Figure 13 shows a 1x10 Fibre Channel end-end service between two On-net Data Centre Nodes.

Figure 13: On-net Data Centre Node to On-net Data Centre Node Wholesale Optical Service.

In general, the Ciena 6500 Optical PoP will be located in the BT Room and the customer equipment will be located in the customer’s room, but this depends on the situation at individual Data Centres and the processes/rules applied by each data centre owner. These rooms may be physically separate rooms or designated separate areas in the same physical room.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3 2.5.3 BT core node to On-net data centre node The Wholesale Optical Service between a BT Core Node and an on-net Data Centre Node will be provided using either separate client interface and wavelength transponder cards, or a combined client interface/wavelength transponder card installed into existing Ciena 6500 Optical PoPs in the BT Core Node and On-net Data Centre Nodes. The card(s) used will be determined by the customer’s requirements.

Figure 14 shows a 1x10GE end-end service between a BT Core Node and an on-net Data Centre Node.

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An Openreach Internal Cablelink product will be used in the BT Core Node to connect the customer equipment in the MUA space to the Optical PoP, whilst a Data Centre fibre Cross-Connect will be used in the on-net Data Centre Node to connect to the customer equipment.

The Data Centre fibre Cross-Connect is not provided as part of the Wholesale Optical Service; the customer must order it directly from the Data Centre operator.

Figure 14: Core Node to Data Centre Node Wholesale Optical Service

In general, the Ciena 6500 Optical PoP will be located in the BT Room and the customer equipment will be located in the customer’s room, but this depends on the situation at individual Data Centres and the processes/rules applied by the data centre owners. These rooms may be physically separate rooms or designated separate areas in the same physical room.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3. 2.5.4 Customer site to customer site A Wholesale Optical service between two Customer Sites is comprised of

 Access connectivity from customer premise to Ciena 6500 Optical PoP in the BT Core Node

 Connectivity between the BT Core Nodes

 Access connectivity from the Ciena 6500 Optical PoP in the BT Core Node to the customer premise.

Figure 15 shows the high level connectivity of a Customer Site to Customer Site solution.

Figure 15: Customer Site to Customer Site Wholesale Optical Service

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Section 2.5.4 specifically focusses on the different access products that can be used to provide the Customer Site to BT Core Node connectivity part of the Wholesale Optical solution. The two Customer Site to BT Core Node access products can either be the same or different depending on the customer’s requirements

Table 7 below shows the different access connectivity options between the Customer Site and BT Core Node at each end of the Wholesale Optical solution and any limitations that may apply, and the NTE provider for connectivity from the customer’s site to the BT Core Node.

Customer Customer Customer Customer Customer site B end site B end Customer site B end site B end site B end Access Product OSEA6500 OSEA6500 site B end OSA EAD EBD Alien Bookended Cablelink (OR NTE) (OR NTE) (OR NTE) (OR NTE) (OR NTE)

Customer site A end OSEA6500 Yes No No No No No Alien (OR NTE)

Customer site A end OSEA6500 No Yes Yes Yes* Yes* Yes Bookended (OR NTE)

Customer site A No Yes Yes Yes* Yes* Yes end OSA (OR NTE)

Customer site A No Yes* Yes* Yes* Yes* Yes* end EAD (OR NTE)

Customer site A No Yes* Yes* Yes* Yes* Yes* end EBD (OR NTE)

Customer site A No Yes Yes Yes* Yes* Yes end Cablelink

Table 7: Access products supported on a Customer Site to Customer Site service

* The maximum supported service on these access products is 1x10GE

Where a customer’s equipment is located in a third party data centre that is not a designated “on-net” site for Wholesale optical, this will be classed as a customer premise, and it will be the customer’s responsibility to provide a cabinet to house the NTE.

Customer Sites can only be parented to a BT Core Node; they cannot be parented to an On-net Data Centre Node.

Details and descriptions of the Openreach access products can be found on the Openreach website www.openreach.co.uk 2.5.4.1 OSEA6500 Alien Wavelength At the Customer’s premise Openreach will install an OSEA6500 chassis, either separate client interface and wavelength transponder cards, or a combined client interface/wavelength transponder card, and appropriate amplification as required. The Ciena 6500 chassis will house cards capable of supporting 10Gb, 40Gb and 100Gb Ethernet, Fibre Channel and OTU transport interfaces.

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Details and descriptions of the Openreach access products, including chassis size, power and space requirement can be found on the Openreach website www.openreach.co.uk

When the Openreach OSEA6500 Alien Wavelength product is used to provide connectivity from the customer’s site to the nearest BT Core Node, the wavelength carrying the customer’s service is generated by the Openreach NTE.

The wavelength is carried across the Openreach access circuit to the BT Core Node, passing through a filter to ensure the frequency and power levels are correct, before entering the BT 21CN optical core network via the Ciena 6500 Optical PoP.

The wavelength is extended across the 21CN optical core network by the Ciena 6500 Optical PoP. The wavelength will pass all-optically through the Ciena 6500 Optical PoP and be the same wavelength with the same frequency end-to-end. The choice of frequency is controlled by the 21CN core capacity management team and requested from Openreach when ordering the OSEA 6500 access products.

Figure 16 shows the connectivity between an end customer’s premises and the BT Core Node when an Openreach OSEA6500 Alien wavelength access product is used.

Figure 16: Customer site to BT Core Node connectivity using the Openreach OSEA6500 Alien Wavelength access product.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3. 2.5.4.2 OSEA6500 Bookended Hand-Off At the Customer’s premise Openreach will install an OSEA6500 chassis, either separate client interface and wavelength transponder cards, or a combined client interface/wavelength transponder card, and appropriate amplification as required to meet the customer’s requirements. The Ciena 6500 chassis will house cards capable of supporting 10Gb, 40Gb and 100Gb Ethernet, Fibre Channel and OTU transport interfaces.

Details and descriptions of the Openreach access products, including chassis size, power and space requirement can be found on the Openreach website www.openreach.co.uk. Issued by: Tim Hubbard Page 17 of 53 Issue no: 7 Date: 01/03/2018

At the BT Core Node, Openreach will install a Ciena 6500 NTE in the BT provided cabinet.

The cards in the Openreach Ciena 6500 NTEs will generate a wavelength between the customer’s site and the BT Core Node, which will carry the customer’s services. At the BT Core node the Wholesale Optical service coming from the Customer’s site will be extended by the Ciena 6500 Optical PoP which will generate a new wavelength across the 21CN optical core network.

The wavelength frequencies can be different over the OSEA 6500 Bookended access product and across the 21CN optical core network.

Figure 17 shows the connectivity between an end customer’s premises and the BT Core Node when an Openreach OSEA6500 Bookended access product is used.

Figure 17: Customer site to BT Core Node connectivity using the Openreach OSEA6500 Bookended access product.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3. 2.5.4.3 OSA Hand-Off At the Customer’s premise Openreach will install an ADVA FSP3000 OSA NTE including appropriate amplification as required in a customer supplied cabinet. The ADVA FSP3000 chassis will house transponder cards capable of supporting 10GE, Fibre Channel and OTU2/2e transport interfaces.

Details and descriptions of the Openreach access products, including chassis size, power and space requirement can be found on the Openreach website www.openreach.co.uk

At the BT Core Node, Openreach will install an ADVA FSP3000 OSA NTE in the BT provided cabinet.

The cards in the Openreach FSP3000 NTEs will generate a wavelength between the customer’s site and the BT Core Node, which will carry the customer’s services. At the BT Core node the Wholesale Optical service coming from the Customer’s site will be extended by the Ciena 6500 Optical PoP which will generate a new wavelength across the 21CN optical core network.

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The wavelength frequencies can be different over the OSA access product and across the 21CN optical core network.

Figure 18 shows the connectivity between an end customer’s premises and the BT Core Node when an Openreach OSA access product is used.

Figure 18: Customer site to BT Core Node connectivity using the Openreach OSA access product.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3.

2.5.4.4 EAD At the Customer’s premise Openreach will install an ADVA XG210 EAD NTE in a customer supplied cabinet. The XG210 chassis will house a transponder card capable of supporting a 1x10GE transport interface.

Details and descriptions of the Openreach access products, including chassis size, power and space requirement can be found on the Openreach website www.openreach.co.uk

At the BT Core Node, Openreach will install an ADVA XG210 EAD NTE in the BT provided cabinet.

The card in the Openreach XG210 NTEs will generate a wavelength between the customer’s site and the BT Core Node, which will carry the customer’s services. At the BT Core node the Wholesale Optical service coming from the Customer’s site will be extended by the Ciena 6500 Optical PoP which will generate a new wavelength across the 21CN optical core network.

The wavelength frequencies can be different over the EAD access product and across the 21CN optical core network.

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Figure 19 shows the connectivity between an end customer’s premises and the BT Core Node when an Openreach EAD access product is used.

Figure 19: Customer site to BT Core Node connectivity using the Openreach EAD access product.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3.

2.5.4.5 EBD The EBD backhaul product is used to provide connectivity between customer equipment installed in a non BT Core Node, and its adjacent BT Core Node.

At the non BT Core Node, Openreach will activate a 1x10GE transponder card. An internal Cablelink will be required to connect the customer’s equipment to the EBD transponder card.

Details and descriptions of the Openreach access products, including chassis size, power and space requirement can be found on the Openreach website www.openreach.co.uk

At the BT Core Node, Openreach will activate a 1x10GE transponder card.

The EBD transponder card will generate a wavelength between the non BT Core Node and the BT Core Node, this will carry the customer’s services. At the BT Core node the Wholesale Optical service coming from the Customer’s site will be extended by the Ciena 6500 Optical PoP which will generate a new wavelength across the 21CN optical core network.

The wavelength frequencies can be different over the EBD access product and across the 21CN optical core network.

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Figure 20 shows the connectivity between an end customer’s premises and the BT Core Node when an Openreach EBD backhaul product is used.

Figure 20: Customer site to BT Core Node connectivity using the Openreach EBD Backhaul product.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3.

2.5.4.6 External cablelink hand-off The External Cablelink access product is used where the customer has their own fibre installed to the cable chamber associated with the 21CN Core Node.

A list of BT Core Nodes where Ciena 6500 Optical PoPs are deployed can be found in Annex A.

BT will install either separate client interface and wavelength transponder cards, or a combined client interface/wavelength transponder card installed into existing Ciena 6500 Optical PoPs in 21CN Core Nodes. The card(s) used will be determined by the customer’s requirements.

The Openreach External Cablelink will be installed between the Ciena 6500 Optical PoP (located in the 21CN Core Area of the BT Core Node) and the customer customer’s fibre in the cable chamber, where Openreach engineers will splice the External Cablelink fibre to the customer’s fibre.

This solution will not accept an Alien wavelength from the customer, and is not available at an on-net data centre.

Figure 21 shows the connectivity between the Ciena 6500 Optical PoP and the customer fibre in the BT Core Node cable chamber.

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Figure 21: Customer site to BT Core Node connectivity using the External Cablelink access product.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3.

2.5.5 Customer site to BT core node service

A Wholesale Optical service between a Customer Site and a BT Core Node is comprised of

 Access connectivity from customer premise to Ciena 6500 Optical PoP in the BT Core Node

 Connectivity between the BT Core Nodes

Where a customer’s equipment is located in a third party data centre that is not a designated “on-net” site for Wholesale optical, this will be classed a customer premise, and it will be the customer’s responsibility to provide a cabinet to house the NTE.

Table 8 below shows the different access connectivity options and NTE provider for connectivity from the customer’s site to the nearest Ciena 6500 Optical PoP for a Customer Site to BT Core Node service.

Access Product Nearest BT Core Node

Customer site A end No OSEA6500 Alien (OR NTE)

Customer site A end Yes OSEA6500 Bookended (OR NTE)

Customer site A end Yes OSA (OR NTE)

Customer site A end Yes EAD (OR NTE)

Customer site A end Yes EBD (OR NTE)

Customer site A end Yes Cablelink

Table 8: Access products supported on a Customer Site to BT Core Node service.

A Customer Sites must only be parented to a BT Core Node; they can’t be parented to an on-net Data Centre Node.

Issued by: Tim Hubbard Page 22 of 53 Issue no: 7 Date: 01/03/2018

2.5.5.1 OSEA 6500 – Bookended hand-off

At the Customer’s site Openreach will install a Ciena 6500 NTE in the customer provided cabinet. The size of chassis will be determined by the customer requirements. The Ciena 6500 chassis will house either separate client interface and wavelength transponder cards, or a combined client interface/wavelength transponder card capable of supporting 10Gb, 40Gb and 100Gb Ethernet, Fibre Channel and OTU transport interfaces.

Details and descriptions of the Openreach access products, including chassis size, power and space requirement can be found on the Openreach website www.openreach.co.uk

At the BT Core Node, Openreach will install a Ciena 6500 NTE in the BT provided cabinet.

The cards in the Openreach Ciena 6500 NTEs will generate a wavelength between the customer’s site and the BT Core Node (A End), which will carry the customer’s services.

At the BT Core node (A End) the Ciena 6500 Optical PoP will generate a new wavelength to carry the Wholesale Optical service across the 21CN optical core network to the BT Core Node Node (B end).

The wavelength frequencies can be different over the OSEA 6500 Bookended access product and across the 21CN optical core network.

Figure 22 shows the Customer Site to BT Core Node connectivity using the OSEA6500 Bookended access product.

Figure 22: Customer site to BT Core Node connectivity using the OSEA6500 access product.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3. 2.5.5.2 OSA – Bookended hand-off

At the Customer’s premise Openreach will install an ADVA FSP3000 OSA NTE including appropriate amplification as required in a customer supplied cabinet. The ADVA FSP3000 chassis will house transponder cards capable of supporting 10Gb Ethernet, Fibre Channel and OTU transport interfaces.

Details and descriptions of the Openreach access products, including chassis size, power and space requirement can be found on the Openreach website www.openreach.co.uk

Issued by: Tim Hubbard Page 23 of 53 Issue no: 7 Date: 01/03/2018

At the BT Core Node, Openreach will install an ADVA FSP3000 OSA NTE in the BT provided cabinet.

The cards in the Openreach FSP3000 NTEs will generate a wavelength between the customer’s site and the BT Core Node (A End), which will carry the customer’s services.

At the BT Core node (A End) the Ciena 6500 Optical PoP will generate a new wavelength to carry the Wholesale Optical service across the 21CN optical core network to the BT Core Node Node (B end).

The wavelength frequencies can be different over the OSA access product and across the 21CN optical core network.

Figure 23 shows the Customer Site to BT Core Node connectivity using the OSA access product.

Figure 23: Customer site to BT Core Node connectivity using the OSA access product.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3.

2.5.5.3 EAD

At the Customer’s premise Openreach will install an ADVA XG210 EAD NTE in a customer supplied cabinet. The XG210 chassis will house a transponder card capable of supporting a 1x10GE transport interface.

Details and descriptions of the Openreach access products, including chassis size, power and space requirement can be found on the Openreach website www.openreach.co.uk

At the BT Core Node, Openreach will install an ADVA XG210 EAD NTE in the BT provided cabinet.

The cards in the Openreach XG210 NTEs will generate a wavelength between the customer’s site and the BT Core Node, which will carry the customer’s services. At the BT Core node the Wholesale Optical service coming from the Customer’s site will be extended by the Ciena 6500 Optical PoP which will generate a new wavelength across the 21CN optical core network.

The wavelength frequencies can be different over the EAD access product and across the 21CN optical core network.

Issued by: Tim Hubbard Page 24 of 53 Issue no: 7 Date: 01/03/2018

Figure 24 shows the connectivity between an end customer’s premises and the BT Core Node when an Openreach EAD access product is used.

Figure 24: Customer site to BT Core Node connectivity using the Openreach EAD access product.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3. 2.5.5.4 EBD

The EBD backhaul product is used to provide connectivity between customer equipment installed in a non BT Core Node, and its adjacent BT Core Node.

At the non BT Core Node, Openreach will activate a 1x10GE transponder card. An internal Cablelink will be required to connect the customer’s equipment to the EBD transponder card.

Details and descriptions of the Openreach access products, including chassis size, power and space requirement can be found on the Openreach website www.openreach.co.uk

At the BT Core Node, Openreach will activate a 1x10GE transponder card.

The wavelength frequencies can be different over the EBD access product and across the 21CN optical core network.

Figure 25 shows the connectivity between an end customer’s premises and the BT Core Node when an Openreach EBD backhaul product is used.

Issued by: Tim Hubbard Page 25 of 53 Issue no: 7 Date: 01/03/2018

Figure 25: Customer site to BT Core Node connectivity using the Openreach EBD Backhaul product.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3. 2.5.5.5 External cablelink hand-off

Between the Customer Site and BT Core Node, the customer’s own fibre will provide connectivity. No NTEs are provided by either BTW or Openreach.

The External Cablelink will carry a “grey wavelength” from the fibre splice in the Core Node external cable chamber to the customer facing port on either a separate client interface and wavelength transponder cards, or a combined client interface/wavelength transponder card installed into existing Ciena 6500 Optical PoP in BT Core Node (A End). The card(s) used will be determined by the customer’s requirements..

At the BT Core node (A End) the Ciena 6500 Optical PoP will generate a wavelength to carry the Wholesale Optical service across the 21CN optical core network to the On-net Data Centre Node Node (B end).

This solution will not accept an Alien wavelength from the customer, and is not available at an on-net data centre.

Figure 26 shows the Customer Site to BT Core Node connectivity using the External Cablelink access product.

Figure 26 shows product

Figure 26: Customer site to BT Core Node connectivity using the External cablelink access product.

Issued by: Tim Hubbard Page 26 of 53 Issue no: 7 Date: 01/03/2018

2.5.6 Customer site to On-net data centre node service

A Wholesale Optical service between a Customer Site and an On-net Data Centre Node is comprised of

 Access connectivity from customer premise to Ciena 6500 Optical PoP in the BT Core Node

 Connectivity between the BT Core Node and On-net Data Centre Node

Table 9 below shows the different access connectivity options and NTE provider for connectivity from the customer’s site to the nearest Ciena 6500 Optical PoP for a Customer Site to On-net Data Centre Node service.

Access Product On net Data Centre Node

Customer site A end No OSEA6500 Alien (OR NTE)

Customer site A end Yes OSEA6500 Bookended (OR NTE)

Customer site A end Yes OSA (OR NTE)

Customer site A end Yes EAD (OR NTE)

Customer site A end Yes EBD (OR NTE)

Customer site A end Yes Cablelink

Table 9: Access products supported on a Customer Site to On-net Data Centre Node service.

A Customer Sites must only be parented to a BT Core Node; they can’t be parented to an on-net Data Centre Node. 2.5.6.1 OSEA 6500 - Bookended hand-off

Details and descriptions of the Openreach access products, including chassis size, power and space requirement can be found on the Openreach website www.openreach.co.uk

Issued by: Tim Hubbard Page 27 of 53 Issue no: 7 Date: 01/03/2018

At the BT Core Node, Openreach will install a Ciena 6500 NTE in the BT provided cabinet.

The cards in the Openreach Ciena 6500 NTEs will generate a wavelength between the customer’s site and the BT Core Node (A End), which will carry the customer’s services.

At the BT Core node (A End) the Ciena 6500 Optical PoP will generate a new wavelength to carry the Wholesale Optical service across the 21CN optical core network to the On-net Data Centre Node.

The wavelength frequencies can be different over the OSEA 6500 Bookended access product and across the 21CN optical core network.

Figure 27 shows the Customer Site to On-net Data Centre Node connectivity using the OSEA6500 Bookended access product.

Figure 27: Customer site to On-net Data Centre Node Node connectivity using the OSEA6500 access product.

The Data Centre cross connect fibre is outside the scope of the Wholesale Optical services and needs to be organised with the Data Centre owner by the customer

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3. 2.5.6.2 OSA - Bookended hand-off

Details and descriptions of the Openreach access products, including chassis size, power and space requirement can be found on the Openreach website www.openreach.co.uk

At the BT Core Node, Openreach will install an ADVA FSP3000 OSA NTE in the BT provided cabinet.

The cards in the Openreach FSP3000 NTEs will generate a wavelength between the customer’s site and the BT Core Node (A End), which will carry the customer’s services.

Issued by: Tim Hubbard Page 28 of 53 Issue no: 7 Date: 01/03/2018

At the BT Core node (A End) the Ciena 6500 Optical PoP will generate a new wavelength to carry the Wholesale Optical service across the 21CN optical core network to the On-net Data Centre Node.

The wavelength frequencies can be different over the OSA access product and across the 21CN optical core network.

Figure 28 shows the Customer Site to On-net Data Centre Node connectivity using the OSA access product

Figure 28: Customer site to On-net Data Centre Node connectivity using the OSA access product.

The Data Centre cross connect fibre is outside the scope of the Wholesale Optical services and needs to be organised with the Data Centre owner by the customer

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3.

2.5.6.3 EAD

Details and descriptions of the Openreach access products, including chassis size, power and space requirement can be found on the Openreach website www.openreach.co.uk

At the BT Core Node, Openreach will install an ADVA XG210 EAD NTE in the BT provided cabinet.

The wavelength frequencies can be different over the EAD access product and across the 21CN optical core network. Issued by: Tim Hubbard Page 29 of 53 Issue no: 7 Date: 01/03/2018

Figure 29 shows the connectivity between an end customer’s premises and the BT Core Node when an Openreach EAD access product is used.

Figure 29: Customer site to On-net Data Centre Node connectivity using the Openreach EAD access product.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3. 2.5.6.4 EBD

The EBD backhaul product is used to provide connectivity between customer equipment installed in a non BT Core Node, and its adjacent BT Core Node.

At the non BT Core Node, Openreach will activate a 1x10GE transponder card. An internal Cablelink will be required to connect the customer’s equipment to the EBD transponder card.

Details and descriptions of the Openreach access products, including chassis size, power and space requirement can be found on the Openreach website www.openreach.co.uk

At the BT Core Node, Openreach will activate a 1x10GE transponder card.

The wavelength frequencies can be different over the EBD access product and across the 21CN optical core network.

Figure 30 shows the connectivity between an end customer’s premises and the BT Core Node when an Openreach EBD backhaul product is used.

Issued by: Tim Hubbard Page 30 of 53 Issue no: 7 Date: 01/03/2018

Figure 30: Customer site to On-net Data Centre Node connectivity using the Openreach EBD Backhaul product.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3. 2.5.6.5 External cablelink hand-off

Between the Customer Site and BT Core Node, the customer’s own fibre will provide connectivity. No NTEs are provided by either BTW or Openreach.

At the BT Core node (A End) the Ciena 6500 Optical PoP will generate a wavelength to carry the Wholesale Optical service across the 21CN optical core network to the On-net Data Centre Node.

This solution will not accept an Alien wavelength from the customer, and is not available at an on-net data centre.

Figure 31 shows the Customer Site to On-net Data Centre Node connectivity using the External Cablelink access product.

Issued by: Tim Hubbard Page 31 of 53 Issue no: 7 Date: 01/03/2018

Figure 31: Customer site to On-net Data Centre Node connectivity using the External Cablelink access product.

The Data Centre cross connect fibre is outside the scope of the Wholesale Optical services and needs to be organised with the Data Centre owner by the customer.

For information on the customer presentation interface at the BT Service Demarcation Point, please see section 2.3.

2.6 Network terminating equipment

When providing connectivity to the end customer’s equipment using an Openreach access product (EAD, OSA, OSEA6500), the NTE used will be determined by the customer’s requirements.

Table 10 below shows the NTE options for the different customer facing interface types.

Customer ADVA XG210 ADVA FSP3000 Ciena 6500 Interface (EAD) (OSA) (OSEA6500)

1Gb FC No Yes Yes

2Gb FC No Yes Yes

4Gb FC No Yes Yes

8Gb FC No Yes Yes

10Gb FC No Yes Yes

10GE No Yes * Yes

40GE No No Yes

100GE No No Yes

OTU2 No No Yes

OTU2e No No Yes

OTU4 No No Yes

Table 10: Customer interfaces and associated NTE

Details and descriptions of the Openreach access products, including chassis size, power and space requirement can be found on the Openreach website www.openreach.co.uk.

2.7 Resilience options

The Wholesale Optical solution supports three resilience options

• Standard Service (end to end) • Resilience Option 1 (end to end) • Resilience Option 2 (end to end)

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2.7.1 Standard service

A Standard service is comprised of

 A single access circuit between the Ciena 6500 Optical PoP and the NTE associated with the customer’s equipment at the A end of the service.

 A single wavelength across the BT optical core network between the Ciena 6500 Optical PoPs.

A single access circuit between the Ciena 6500 Optical PoP and the NTE associated with the customer’s equipment at the B end of the service.

Figure 32: Wholesale Optical Standard service end to end

The access products that can be used with a Standard service are:-

 Openreach OSA access product

 Openreach OSEA6500 access product

 Openreach EAD access product

 Openreach EBD backhaul product

 Openreach internal Cablelink

 Openreach external Cablelink

In the event of a failure with either the access product (OSA, OSEA6500, EAD, etc), or the core network wavelength, the end to end Wholesale Optical service will cease to function, and end to end connectivity will be lost.

2.7.2 Resilience option 1 service

A Resilience Option 1 (RO1) service is comprised of

 Standard Openreach access circuit between the Ciena 6500 Optical PoP and the Openreach NTE associated with the customer’s equipment at the A end of the service.

 Two wavelengths across the BT optical core network between the Ciena 6500 Optical PoPs, with one Optical PoP containing the Optical protection Switch (OPS).

 Standard Openreach access circuit between the Ciena 6500 Optical PoP and the Openreach NTE associated with the customer’s equipment at the B end of the service.

Issued by: Tim Hubbard Page 33 of 53 Issue no: 7 Date: 01/03/2018

Figure 33: Wholesale Optical RO1 service across the core network.

The access products that can be used with a RO1 service are:-

 Openreach OSA access product

 Openreach OSEA6500 access product

 Openreach EAD access product

 Openreach EBD backhaul product

 Openreach internal Cablelink

 Openreach external Cablelink

With a RO 1 service, only the primary core network path is available to the customer. The secondary core network path will only be used in the event the primary path fails

In the event of a failure with the primary core network wavelength, the Optical Protection Switch (OPS) in the Ciena 6500 Optical PoP will detect the loss of light and switch the customer’s service to the secondary path.

Switching to the alternate access circuit path will take less than 50mS and is transparent to the customer’s LAG/LACP.

In the event of a failure with the access product (OSA, OSEA6500, EAD, etc, the end to end Wholesale Optical service will cease to function, and end to end connectivity will be lost.

2.7.3 Resilience option 2 service

A Resilience Option 2 (RO2) service is comprised of

 Two Openreach access circuits between the Ciena 6500 Optical PoP and the NTE associated with the customer’s equipment at the A end of the service

 Two NTEs at the A end of the service

 Two wavelengths across the BT optical core network between the Ciena 6500 Optical PoPs

 Two Openreach access circuits between the Ciena 6500 Optical PoP and the NTE associated with the customer’s equipment at the B end of the service

 Two NTEs at the B end of the service

Issued by: Tim Hubbard Page 34 of 53 Issue no: 7 Date: 01/03/2018

There are two RO2 service options

1. The Openreach access product can connect to two separate BT Core Nodes (Figure 34).

2. The Openreach access product can connect to two separate Ciena 6500 Optical PoPs in the same BT Core Node (Figure 35).

In option 2, the two Ciena 6500 Optical PoPs are installed in separate cabinets and served by separate fibres, power, cooling, etc. but the BT exchange as a building does become a single point of failure.

Figure 34: Wholesale Optical Resilience Option 2 service.

Figure 35: Wholesale Optical Resilience Option 2 service.

The access products that can be used with a Standard end to end service are:-

 Openreach OSA access product

 Openreach OSEA6500 access product

 Openreach EAD access product

 Openreach EBD backhaul product

 Openreach internal cablelink

Issued by: Tim Hubbard Page 35 of 53 Issue no: 7 Date: 01/03/2018

With a RO2 service, both the primary and secondary paths are available to the customer for carrying their traffic.

In the event of a failure with either the Openreach access product or the core network wavelength, the customer’s CPE will switch to using the path that hasn’t failed.

2.8 Supplier information notes

For details of the interface specifications for the Wholesale Optical product please refer to SIN 516 at www.sinet.bt.com

For details of the interface specifications for the Openreach OSA please refer to SIN 489 at www.sinet.bt.com

For details of the interface specifications for the Openreach Ciena 6500 OSEA please refer to SIN 514 at www.sinet.bt.com

2.9 Performance and class of service

Wholesale Optical does not offer class of service prioritisation to customer traffic.

Because Wholesale Optical is a layer 1 transport service, (at line code/PCS level or physical layer), layer 2 Ethernet and Layer 3 IP control protocols are transported transparently and are not be visible to the 21CN DWDM infrastructure.

Transportation of Ethernet frame sizes up to 9600 bytes is supported.

nts. Channel partners must choose one option from each section below.

1. Disaster Recovery is available on IP Office only. IP Office with ACCS can be deployed as Standard or Business Continuity option. 2. ACCS Starter Pack is aligned to the Selected Service Plan. IPO Starter packs medium and large are available on all three service plan options.

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3 BT Wholesale Optical service availability and performance

3.1 Service availability The end to end service availability targets over each 12 month service period for Wholesale Optical are shown in table 18 below.

Standard Access Product RO1 Service RO2 Service Service

Cablelink 99.7% 99.9% 99.99%

OSA 99.7% 99.9% 99.99%

OSEA6500 99.7% 99.9% 99.99% DFA with Ciena 99.7% 99.9% 99.99% 6500 NTE DFA with ADVA 99.7% 99.9% 99.99% XG210 NTE

Table 11: End to End Service availability targets.

3.2 Repair times In the event of a fault to a Wholesale Optical service, the repair time SLA for a Priority 1 fault is 5 hours.

A priority 1 fault is when the end to end service has failed and no customer traffic can pass between their CPE

The repair time SLA for a Priority 2 fault is 24 hours.

Examples of P2 fault include:

 Some of the customer’s applications continue to work  The service goes faulty for a short period of time and then starts working again

If a customer has taken an nx10GE service and one or more of the circuits that make up the Wholesale Optical service between the A and B ends have failed but not all of them.

The repair time SLA does not apply in the event of the following:

1. Elements covered by Force Majeure

2. Critical Nodal Disaster

3. Service degradation caused by an intermittent fault

Where BT need to send an engineer to site to undertake an end to end test that requires the Wholesale Optical service to be taken out of service from the customer’s perspective. 3.3 Packet loss Wholesale Optical will deliver the following packet loss

 0 packet loss for 99.999% of service availability

Issued by: Tim Hubbard Page 37 of 53 Issue no: 7 Date: 01/03/2018

3.4 Service latency The target latency for the Wholesale Optical product between key locations is shown in table 12 below.

Maximum Target Latency A End B End (one way)

London London 0.25mS

London Birmingham 1.57mS

London Bristol 1.33mS

London Manchester 2.48mS

London Edinburgh 4.15mS

London Exeter 1.46mS

Birmingham Leeds 1.27mS

Manchester Newcastle 1.40mS

Table 12: Wholesale Optical target latencies.

3.5 Security accreditation Wholesale Optical has been CAS(T) assured by CESG. Details can be found at the National Cyber Security Centre website (https://www.ncsc.gov.uk/commodity-service/network-services).

3.6 Service credits Full details of the Repair Service Level Agreement (SLA) and associated credits breaches in provision of service timescales, service availability and repair timescales can be found in the Wholesale Optical terms and conditions which remains the authoritative document in all service level matters. 3.6.1 Late delivery credit

In the event that a customer’s Wholesale Optical service is delivered after the agreed Contract Delivery Date, customers are entitled to claim a late delivery credit.

A late delivery credit is claimed by completing the Wholesale Optical Late Delivery Credit Claim form and submitting to their BT Wholesale account manager.

The claim form can be found at https://www.btwholesale.com/pages/static/products-services/wholesale- optical.htm under the Pricing and Contracts section.

Issued by: Tim Hubbard Page 38 of 53 Issue no: 7 Date: 01/03/2018

3.6.2 Service level agreement breach credit

In the event that a customer’s Wholesale Optical service beaches the product Service Level Agreement for service availability or repair time, customers are entitled to claim a Service Level Agreement breach credit.

A Service Level Agreement breach is claimed by completing the Wholesale Optical Service Level Agreement Breach Credit Claim form and submitting to their BT Wholesale account manager.

The claim form can be found at https://www.btwholesale.com/pages/static/products-services/wholesale- optical.htm under the Pricing and Contracts section.

3.7 Optical route maps BT will not provide optical route maps showing the detailed routing of services through the 21CN optical core network. The 21CN optical core network is designated as critical national infrastructure and limits the detail that BT can provide.

BT can provide optical route maps showing the detailed routing of access circuits supplied into data centres that are not on-net, and third party customer premises if required.

Issued by: Tim Hubbard Page 39 of 53 Issue no: 7 Date: 01/03/2018

4 Wholesale Optical commercials

Wholesale Optical is available to BT Wholesale customers only

BTW customers must sign up to BT’s Generic Terms and Conditions (GTCs) and the accompanying Wholesale Optical Service Schedule.

BTW customers should address any queries regarding the Wholesale Optical GTCs and accompanying Service Schedule, in the first instance to their BT Commercial or Account Manager.

4.1 Pricing The pricing model for Wholesale Optical is based on two components

 The 21CN optical core

 The Openreach access product connecting the customer’s equipment to the 21CN optical core (if applicable)

All prices for a Wholesale Optical service are bespoke and are provided on request.

A request for pricing of a Wholesale Optical service should be made through the customer’s Account Manager.

The price paid by a customer will be determined by four components:

 The Openreach access product (if applicable)

 The distance from the customer’s equipment to the Ciena 6500 DWDM multiplexer in the 21CN Core/Metro Node

 The bandwidth requested by the customer

 The distance between the Core Nodes and/or Data Centre Nodes

Wholesale Optical does not offer a “sub-rate” service. A customer cannot request less than 10Gbs of bandwidth on a 10GE service, or less than 100Gbs of bandwidth on a 100GE service.

The Wholesale Optical product pricing will comprise of a single Non Recurring Charge, payable when the agreed Wholesale Optical service has been installed, tested and handed to the customer by BT, and a Monthly or Quarterly Recurring Charge payable in advance from the time the service is handed to the customer until the end of the contract.

Issued by: Tim Hubbard Page 40 of 53 Issue no: 7 Date: 01/03/2018

5 Wholesale Optical processes

5.1 Service order types The following order types are supported.

 Provide*

 Cease**

* Once the Provide instruction has been submitted, the Wholesale Optical service cannot be cancelled, amended or modified

** Once the Cease instruction has been received by BT, the customer has the right to stop the Cease instruction for an agreed period. Full details can be found in the 21CN Optical Service Schedule.

5.1.1 Provide

Provide is the delivery of a new Wholesale Optical service. BTW will issue a Provide instruction on receipt of a signed order and completed CRF from the customer. Details of the order form and CRF are given in section 5.2.

5.1.2 Cease

To cease a Wholesale Optical service, a customer will need to complete a cease instruction and submitted the request through their account manager. The cease instruction is attached below.

Wholesale Optical cease request.xlsx

5.1.3 Migrate

A customer wishing to migrate the A or B end of a Wholesale Optical service to another location will need to order a new service (Provide) and Cease the existing service when the new one has been provided. In this situation no early termination charges will apply for the circuit being ceased.

5.1.4 Upgrade

A customer wishing to upgrade an existing Wholesale Optical service, for example from 1x10GE to 2x10GE, will need to order (Provide) a new Wholesale Optical service for the additional bandwidth required. The new service will be installed in parallel, alongside the existing service.

It may be necessary to upgrade or even replace the NTE installed as part of the original service. This decision will be determined by the service upgrade being requested, the amount of bandwidth being requested as part of the upgrade, and the capabilities of the NTE installed to support the original service requested by the customer.

Issued by: Tim Hubbard Page 41 of 53 Issue no: 7 Date: 01/03/2018

5.1.5 Modify

Wholesale Optical doesn’t support a Modify function.

5.1.6 Amend

Wholesale Optical doesn’t support an Amend function.

5.2 Placing an order All customer requirements will be captured in the Wholesale Optical Customer Request Form (CRF). All appropriate sections of the CRF must be completed.

The Wholesale Optical CRF (attached below) will be completed jointly by BT and the customer, and each will sign to confirm all the information is accurate.BT will complete the sections highlighted in green, the customer will complete the sections highlighted in yellow.

Incomplete information can result in delays to the delivery of the Wholesale Optical services, or an incorrect delivery.

Changes can be made to the CRF by the customer, but this could result in delays to the delivery of the service, and a change to the Contractual Delivery Date.

Wholesale Optical CRF.xlsx

The completed CRF must be submitted to BTW through your account manager along with the signed order form giving details of the requested service and agreed pricing. An example of the order form is attached below.

Wholesale Optical Customer Order Form.doc

5.3 Contractual delivery date Following submission of the Wholesale Optical CRF and signed order form, BTW will complete the individual orders to place formal orders with Openreach and BT Technology and Service Operations (TSO) to deliver the agreed Wholesale Optical service.

Upon receipt of the order surveys from Openreach and TSO, the Contractual Delivery Date for the Wholesale Optical service will be agreed with the customer.

The target delivery timescales for the Wholesale Optical service are:

 Assuming no additional fibre builds are required, between 66 and 105 working days from CRF signature, depending on the Openreach access product required

 If additional fibre builds are required, between 186 and 225 working days from CRF signature, depending on the Openreach access product required

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Any changes to the information in the CRF after signature will result in a delay to the Contractual Delivery Date. 5.4 Order progress and delivery timelines The delivery of a Wholesale Optical service will be managed by a BTW Project Manager who will be responsible for providing regular progress updates to the customer. The time period between updates will be agreed between the customer and the BTW Project Manager.

Table 10 below outlines the target timeline (in working days) for delivery of a Wholesale Optical service, assuming no additional fibre builds are required.

Day Activity

CRF completed and agreed between BT and the customer 0 Signed order received from the customer

Orders submitted into Openreach for access products (if required) 10 Order submitted into Bt Technology and Service Operations for core network

Confirmation of Wholesale Optical Service ID Confirmation from Openreach if Excess Construction and/or new fibre build is 15 required. Confirmation from BT TSO if new core infrastructure is required

17 BT and customer agree Contractual Delivery Date

34 21CN Optical Core delivery (assuming new fibre builds are not required)

Openreach access products installed. This assumes no excess construction 35-75 * and/or new fibre builds are required

40-80 Intra exchange cabling installed and end to end service connected together

Wholesale Optical end to end service testing completed and service handed 60-98 over to customer

61-99 Customer handover document completed and delivered to customer

Table 13: Target Delivery Timescales.

* If Openreach access circuits are being installed into a data centre that is not on-net, there will be an addition 35- 50 working days added to the delivery timescales because of the demand from data centres to provide advance warning of work being done, Site Specific Risk and Method Statement (SSRAMS) and the name of the engineer doing the work. These must also be approved by the data centre before work can commence. This will have a knock on effect to all subsequent timescales.

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5.5 Excess construction charges Following acceptance of a Wholesale Optical order, BT aims to confirm the amount of any applicable Excess Construction Charges by Day 15. 5.6 End to End testing Upon completion of the Wholesale Optical service delivery and prior to customer handover, BT will undertake a 4 hour performance and stability test on each service delivered. To pass the test there must be no bit errors, packet drops or loss of service during the test.

5.7 Customer service plan and handover document Upon delivery of the Wholesale Optical service and handover to the customer, a Customer Service Plan and Handover document (CSP) will be supplied. This document provides details of the Wholesale Optical services provided, fault reporting. Planned Engineering Works notifications, etc. An example is shown below.

Example customer handover document.doc

Any changes to the Wholesale Optical services provided to a customer, for example upgrades to existing services, new services added, etc will result in an update of the CSP being issued.

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6 Wholesale Optical fault management

6.1 Raising a fault To report a fault with a Wholesale Optical service, the customer will contact the BT service centre using the contact details in the CSP supplied by BT.

When reporting the fault the customer will be asked to provide the following information

 Name and contact details of the person reporting the fault

 The unique Circuit ID for the faulty service, format OPWSxxxxxx

 Whether the Wholesale Optical service is “hard down” or has an intermittent fault

 If the fault is intermittent, what are the symptoms being experienced, eg high latency, high packet drop, etc

Details of the questions the customer may need to answer when reporting a fault are provided in the CSP supplied by BT.

If the Wholesale Optical service is being provided as a “sell through” solution to an enterprise customer, BTW will not accept a fault reported directly by the end customer. BT will only accept a fault reported by the BTW customer.

Upon resolution of the fault, BT will confirm service restoration and cause to the designated BTW customer contact.

Details of the Wholesale Optical fault reporting and fault repair times are in Section 3.2 of this product handbook.

6.2 Proactive fault management In the event BT detects a fault with a Wholesale Optical service before it has been reported by the customer, BT will notify the customer using the method and contact details in the CSP supplied by BT.

6.3 Planned engineering works Planned Engineering Works (PEWs) is a known programme of network engineering work within BT’s control.

BT will inform the customer of any foreseen work it finds necessary to carry out within its own network which may affect the Wholesale Optical service or standards or performance as perceived by the customer. The request for deferment of a planned outage by the customer will be subject to negotiation and agreement with each case considered on its merits.

Details of the PEW process and customer/BT contact details are shown in the CSP supplied by BT.

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7 Wholesale Optical billing

The Wholesale Optical charges are comprised of two elements:

 A Non Recurring Charge payable after the service has been formally handed over to the customer

 A Monthly or Quarterly Recurring Charge payable each calendar month/quarter starting the day after the Wholesale Optical service has been formally handed over to the customer, until the service is ceased by the customer or BT

Before a customer can order a Wholesale Optical service they must be “on-boarded” for the Wholesale Optical service. The on-boarding process is to enable BTW to generate invoices to the customer for the Wholesale Optical service being provided.

On-boarding for the Wholesale Optical service is managed through your Account Manager.

The first invoice raised will include the Non Recurring Charge and the first Monthly/Quarterly Recurring Charge in advance. Subsequent invoices raised will be for the Monthly/Quarterly Recurring Charge in advance.

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8 BT Wholesale contact information

Enquiries about Wholesale Optical should be addressed in the first case to your BT Account Team.

Information about Wholesale Optical and other BT Wholesale products are available at the BTW website: https://www.btwholesale.com/pages/static/home.htm

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9 Glossary of terms

Abbreviation or Explanation term

21CN 21st Century Network

BTW BT Wholesale

CDD Contractual Delivery Date

CDR Committed Data Rate

CoS Class of Service

CP Communications Provider

CPD Customer Promised Date

CPE Customer Premises Equipment

CRF Customer Requirement Form

CSP Customer Service Plan and handover document

DWDM Dense Wave Division Multiplexing

LACP Link Aggregation Control Protocol

LAG Link Aggregation

NTE Network Termination Equipment

OSA Optical Spectrum Access

OSEA Optical Spectrum Extended Access

PEW Planned Engineering Works

QoS Quality of Service

RTD Round Trip Delay

SLA Service Level Agreement

SLG Service Level Guarantee

WAN Wide Area Networks

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10 Document change control

Contact Date Version Reason for Change Author Details

22/06/2015 1.0 First issue T Hubbard 07918 029088

22/09/2015 2.0 Removal of Shared and T Hubbard 07918 029088 Dedicated Services

01/02/2016 3.0 Addition of LCs as service T Hubbard 07918 029088 demarcation option

01/06/2016 4.0 Update to improve SLA T Hubbard 07918 029088 figures and Customer Requirements Form

01/01/2017 5.0 Removal of RO1 option T Hubbard 07918 029088 and 40GE client interface option

xxxxxx 6.0 Update to include new T Hubbard 07918 029088 access circuit options, resilience option, client interfaces and expansion of optical core network to on-net data centres

Annex A – list of sites where Optical PoPs are installed

BT Core Nodes Postcode

ABERDEEN AB11 6EA ABERYSTWYTH SY23 1NH ASHFORD TN23 1LA ASHTON-IN-MAKERFIELD WN4 8PF BANGOR LL57 2UR BASINGSTOKE RG21 3BX

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BEDFORD MK40 1BA BEDMINSTER BS3 4EG BELFAST CENTRAL BT12 5AP BELFAST SEYMOUR BT1 4NB BIRMINGHAM ERDINGTON B23 6QR BIRMINGHAM MIDLAND B5 4AL BIRMINGHAM TELEPHONE HOUSE B3 1BA BISHOPS STORTFORD CM23 3EB BOLTON BL1 2AB BOURNEMOUTH BH1 2NR BRACKNELL RG12 1JG BRADFORD BD5 7JG BRIDGEWATER TA6 3NA BRISTOL BS1 4AY BROMSGROVE B61 7JH BUDE HAVEN EX23 8QN CAMBRIDGE TRUNK CB2 2HG CARDIFF CF10 1NT CARLISLE PORTLAND HOUSE CA1 1QR CHELMSFORD CM1 1NP CHESTERFIELD S40 1UH CLYDE VALLEY G71 6AP COLCHESTER CO1 1BA COVENTRY CV1 2JY CRAWLEY RH10 8BH CROYDON CR9 5QU DARLINGTON DL3 7DT DERBY DE1 1JY DONCASTER DN1 1AB DOUGLAS IoM IM1 3PQ DUNDEE CENTRAL DD1 1BD EDINBURGH CAPITAL EH11 2RP EDINBURGH DONALDSON EH12 5NE EXETER EX4 3PT FALKIRK FK1 1RW GLASGOW DOUGLAS G2 3BD GLASGOW TELEPHONE HOUSE G2 7AH GLOUCESTER GL1 2JA GUILDFORD GU1 4BD HEMEL HEMPSTEAD HP3 9HB HIGH WYCOMBE HP11 1NT HOVE BN3 3GD INVERNESS IV1 1RN IPSWICH IP1 2AU IRVINE BOURTREE KA11 1JA KENDAL LA9 4BT LEAMINGTON SPA CV32 5EB Issued by: Tim Hubbard Page 50 of 53 Issue no: 7 Date: 01/03/2018

LEEDS BASINGHALL LS1 5DZ LEICESTER MONTFORT LE1 6HL LEICESTER TE LE5 0AQ LINCOLN LN2 5AA LIVERPOOL L3 9PY LONDON BERMONDSEY SE1 5RN LONDON BT TOWER W1P 4BG LONDON COLINDALE NW9 6LB LONDON COVENT GARDEN WC2B 5HF LONDON EALING TE W5 5EN LONDON FARADAY EC4V 4BU LONDON HORNCHURCH RM11 1SS LONDON ILFORD SSC IG1 2BZ LONDON KENSAL GREEN W10 4NB LONDON KIDBROOKE SE18 4LH LONDON KINGSTON TE KT2 6RP LONDON POTTERS BAR EN6 1HR LONDON SOUTH KENSINGTON SW3 3AB LONDON SOUTHALL UB1 3EY LONDON SOUTHBANK SE1 8NZ LONDON STEPNEY GREEN E1 0HA LONDON UPTON PARK E13 9AX LONDON WATFORD WD18 0GB LONDON WOOD GREEN N22 8HR LONDON WOODFORD IG8 0BS LONDON WOOLWICH SE18 6AL LUTON LU1 2QD MAIDSTONE ME14 1AD MANCHESTER DIAL HOUSE M3 7BA MANCHESTER OLDHAM OL1 1BA MANCHESTER PENDLETON M6 5TP MAROWN IoM IM4 4BE MILTON KEYNES MK2 2PA NEWCASTLE NE1 1BB NEWCASTLE HADRIAN NE1 2JQ NEWPORT NP20 5FA NORTHAMPTON NN1 1LZ NORTHWICH CW9 7AW NORWICH CITY NR2 4TP NOTTINGHAM BOWMAN NG1 1BZ OXFORD OX1 1RH PETERBOROUGH PE1 1BA PLYMOUTH PL1 1BQ PONTEFRACT WF8 1NB PORTADOWN BT63 5AX PORTSMOUTH TRUNK PO6 3AD PRESTON PR1 1BA Issued by: Tim Hubbard Page 51 of 53 Issue no: 7 Date: 01/03/2018

READING TRUNK RG2 0EW SALISBURY SP1 3TR SHEFFIELD S1 3EF SHREWSBURY SY1 1TY SLOUGH SL1 1YW SOUTH SHIELDS NE33 4PE SOUTHAMPTON SO14 7FB SOUTHEND SS0 7BT STOKE HANLEY ST1 1HJ SWANSEA CENTRAL SA1 2AB SWINDON SN1 1QT TRURO TR1 2SF TUNBRIDGE WELLS TN4 9TN WALSALL WS1 2HE WARRINGTON TE WA1 1HF WOLVERHAMPTON WV1 1SR WREXHAM LL11 1BU YEOVIL BA20 1AD

On-net data centres Postcode Notes

Digital Reality LON3 Sovereign House E14 9SD Equinix LD4 Slough SL1 4NB Also serves (LD5 & LD6) Serves 6/7 and 8/9 Harbour Equinix LD8 (Harbour Exchange) E14 9HE Exchange Equinix LD9 Powergate NW10 6PW Equinix MA1 Manchester Williams M15 6SE Also serves Kilburn House House Equinix MA3 Manchester Joule House M17 1HE Global Switch 1 E14 9YY Global Switch 2 E14 2AX Interxion 01 E1 6QR Level 3 Goswell Road EC1V 7EB Next Generation Data NP10 8BE Pulsant Milton Keynes MK14 6LY Pulsant South Gyle EH12 9LB AKA ScoLocate SCC Fareham PO15 5TX Serves Telehouse North, East, Telehouse Europe E14 2AA West and North Bldg 2 Telehouse Metro EC2A 4JE Telstra London Hosting Centre E14 9NN

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Offices worldwide