issue 3.2 (1 st june 2012)author: zack thompson1 ncc carrier price list (cpl) guidance slides...

Issue 3.2 (1st June 2012) Author: Zack Thompson 1

NCC Carrier Price List (CPL) Guidance Slides

CONVEYANCE TELEPHONY

These slides are provided as a ‘rough guide’ to the Parts of the CPL relating to the Conveyance Telephony services that often raise queries.

These slides are provided for general guidance only as there may be exceptions to each of the areas shown and therefore should not be relied upon for anything other than basic demonstration purposes.

Carrier Pricing E-Mail: [email protected]


INDEX

Slide Slide Subject CPL Part 01 Title - 02 Index - 03 BT Basic Telephony B1.01 04 CP Telephony (Basic) B1.02 05 CP Telephony (NTS) B1.02 06 CP Telephony (NTS Free Phone) B1.02 07 CP Telephony (PNS) B1.02 08 CP Telephony (International Incoming) B1.02 09 BT International Telephony B1.04 10 BT Telephony (NTS) B1.06 11 BT Telephony (NTS BT Freefone) B1.06 12 Indirect Access Calls to the CP System B1.10 13 BT Transit Telephony to CP (Basic) B1.12.1 14 BT Transit Telephony to CP (03 Calls) B1.12.1 15 BT Transit Telephony to CP (056 LIECS ) B1.12.1 16 BT Transit Telephony to CP (NTS) B1.12.1 17 BT Transit Telephony to CP (NTS Free Phone) B1.12.1 18 BT Transit Telephony to CP (PNS) B1.12.1 19 BT Imported Non-Geographic Number Portability B3.26a 20 BT Imported Non-Geographic Number Portability (Free Phone) B3.26a 21 CP Imported Non-Geographic Number Portability B3.27 22 CP Imported Non-Geographic Number Portability (BT FreeFone) B3.27 23 Non-Geographic Number Portability Transit B3.27.6 24 Element Based Charging (EBC) - 25 Element Based Charging (BT Terminating) - 26 Element Based Charging (CP Terminating) - 27 BT DQ118 services B3.46 28 DQ118 Transit B1.12.1


CP customer

BT customer

BTCP

Part 1.01 - BT Basic TelephonyFor calls terminating on BT basic telephony services

Direction of call

Direction of payment

£ ROLO

£ retail

The distance BT carries the call within its networkdetermines the EBC-related distance that is charged.

(Local, Single Tandem, or Double Tandem)

Geographic number ranges


BT customer

CP customer

BT CP

Part 1.02 - CP Telephony (Basic)For calls terminating on CP basic telephony services

Direction of call


£ POLO

£ retail

Basic Telephony is subject to Ofcom’s Statement & Final Guidance on setting Fair & Reasonable CP

Fixed Termination Rates (FTRs), published on 27th April 2011. From 1st October 2012, it is expected

that CP FTRs will be equal to the BT LES rate (“the Benchmark FTR”).



BT customer SP customer

BT CP

Part 1.02 - CP Telephony (NTS)For calls terminating on CP NTS telephony services

Direction of call


£ POLO

£ retail

£ rental ofnumber range

£ servicemembership

ServiceProviderNTS is usually for services where a service

provider rents the number from the CP anduses it to provide services to retail customers.

PRS calls are usually NTS based as well.

0845, 0870, 090X number ranges


BT customer SP customer

BT CP

Part 1.02 - CP Telephony (NTS Free Phone)For calls terminating on CP NTS telephony services

Direction of call


£ POLO



ServiceProvider

NTS Free Phone services are similar to normal NTS services, except there is no charge to the call

originator. Therefore the payment goes in the opposite direction.

‘free to caller’

0800, 0808 number ranges


BT customer

SP customer

BT CP

Part 1.02 - CP Telephony (PNS)For calls terminating on CP PNS telephony services

Direction of call


£ POLO

£ retail



ServiceProvider

PNS is usually for services where calls are re-directedto a number of possible numbers, basic telephony, mobile, or

even international destinations may be allowed.

SP customer


070X number ranges


CP customer

BT CP

Part 1.02 - CP Telephony(International Incoming)For calls originating overseas

Direction of call


£ POLO

£ agreed overseascharge (may be capped)

Most forms of CP Telephony covered under Part 1.02may also have international incoming access via BT (except PRS).

Charges for International Incoming services may be capped at a rate equivalent to BT’ pn1’ for those CPs who have

agreed for PNS.OverseasAdministration

Any non-PRS number ranges


CP customer

CP BT

Part 1.04 - BT International TelephonyFor calls terminating on overseas administrations

Direction of call


£ ROLO

£ retail

The CP may interconnect to either a BT DMSU, or aBT ISC (which incurs a lower charge because all calls are

carried internationally via the ISC)

OverseasAdministration

BT DMSUor

BT ISC

£ agreedoverseas charge

00 International number ranges


CP customer SP customer

CP BT

Part 1.06 - BT Telephony (NTS)For calls terminating on BT NTS telephony services

Direction of call


£ ROLO

£ retail



ServiceProviderNTS is usually for services where a service

provider rents the number from the CP anduses it to provide services to retail customers.

PRS calls are usually NTS based as well.



CP customer SP customer

CP BT

Part 1.06 - BT Telephony (NTS BT FreeFone)For calls terminating on BT NTS telephony services

Direction of call


£ ROLO



ServiceProvider

NTS Free Phone services are similar to normal NTS services, except there is no charge to the call

originator. Therefore the payment goes in the opposite direction.




CP customer(A Payphone AccessCharge may apply.

See Part 1.09).

BT CP

Part 1.10 - Indirect Access Calls to the CP SystemFor Indirect Access calls to the CP (usually 0800 / 0808 1XXX IA)

Direction of call


£ ROLO


Indirect Access calls use the EBC method to determine the distance a call is carried within the BT network.


The subsequent type of call beyond the 1XXX digits is not considered and

could be any service allowed by the CP.This even includes calls back to a BT number

which are handled as normal calls.

0800 / 0808 1XXX IA number ranges


CP A customer

CP B customer

BT CP B

Part 1.12.1 - BT Transit Telephony to CP (Basic)For calls originating on one CP’s network and terminating on another CP’s basic telephony services

Direction of call


£ POLO

£ retail

The charges in Part 1.12 are charged to the originating CP A , (The £ROLO in this case). Charges are based upon the cost of the out-payment to the

Terminating CP B+TWIX (cost of transiting).The TWIX charges are detailed in Part 1.02.2 Note 7.

CP A

£ ROLO(= £ POLO+ TWIX)

BT keeps TWIX



CP A customer

CP B customer

BT CP B

Part 1.12.1 - BT Transit Telephony to CP (03 Calls)For calls originating on one CP’s network and terminating on another CP’s 03 telephony services

Direction of call


£ POLO

£ retail



CP A


BT keeps TWIX

03 UK Wide number ranges


CP A customer

CP B customer

BT CP B

Part 1.12.1 - BT Transit Telephony to CP (056 LIECS)For calls originating on one CP’s network and terminating on another CP’s 056 LIECS telephony services

Direction of call


£ POLO

£ retail



CP A


BT keeps TWIX

056 LIECS number ranges


CP A customer

BT CP B

Part 1.12.1 - BT Transit Telephony to CP (NTS)For calls originating on one CP’s network and terminating on another CP’s NTS telephony services

Direction of call


£ POLO

£ retail

The charges in Part 1.12.1 are charged to the originatingCP A, (The £ROLO in this case). Charges are based upon the

cost of the out-payment to the terminating CP B.The TWIX (cost of transiting) is charged to the

Terminating CP B.The TWIX charges are detailed in Part 1.02.2 Note 7.

CP A

£ ROLO(= £ POLO)

BT keeps TWIX

£ TWIX

SP customer



ServiceProvider



CP A customer

BT CP B

Part 1.12.1 - BT Transit Telephony to CP(NTS Free Phone)For calls originating on one CP’s network and terminating on another CP’s NTS telephony services

Direction of call


£ POLO


Charges are the same as for NTS, but as there is no charge to the caller, the flow of money is in the other

direction.The TWIX charges are detailed in Part 1.02.2 Note 7.

CP A

£ ROLO(= £ POLO)

BT keeps TWIX

£ TWIX

SP customer



ServiceProvider



CP A customer

BT CP B

Part 1.12.1 - BT Transit Telephony to CP (PNS)For calls originating on one CP’s network and terminating on another CP’s PNS telephony services

Direction of call


£ POLO

£ retail

CP A


BT keeps TWIX

SP customer



ServiceProvider

The charges in Part 1.12.1 are charged to the originating CP A , (The £ROLO in this case). Charges are based upon the

cost of the out-payment to the terminating CP B+TWIX (cost of transiting).

The TWIX charges are detailed in Part 1.02.2 Note 7.

070X number ranges

SP customer



CP customer

CP BT

Part 3.26a - BT Imported Non-GeographicNumber PortabilityFor calls to a CP ‘s number ported to BT

Direction of call


£ ROLO

£ retail This situation occurs where BT has ported numbers from a CP. Calls are routed into the CP as the previous holder of the range, then the CP routes the call to BT. BT is paid the £ROLO for

an applicable service as in Part 1.06, but BT pays the CP an Additional Porting Conveyance charge (APC) for the extra work that they have carried

out in delivering the call to BT.


£ APC

The final service may not be owned by BT, and may be

translated to either the same CP, or another CP.

These are treated as separate calls covered under other parts of

the Carrier Price List.


CP customer

CP BT

Part 3.26a - BT Imported Non-GeographicNumber Portability (Free Phone)For calls to a CP’s number ported to BT

Direction of call


£ ROLO

Charges are the same as for BT Imported non-Geographic Number Portability, but as there is

no charge to the caller, the flow of money is in the other direction.


£ APC

The final service may not be owned by BT, and may be

translated to either the same CP, or another CP.





BT customer

BT CP

Part 3.27 - CP Imported Non-GeographicNumber PortabilityFor calls to a BT number ported to a CP

Direction of call


£ POLO

£ retailThis situation occurs where a CP has ported

numbers from BT. Calls are routed into BT as the previous holder of the range, then BT routes the call to the CP. The CP is paid the £POLO for an applicable service as in Part 1.12.1, but the CP

pays BT an Additional Porting Conveyance charge (APC) for the extra work that BT has carried out in delivering the call to the CP.


£ APC

The final service may not be owned by the CP, and may be

translated to either BT, or another CP.




BT customer

BT CP

Part 3.27 - CP Imported Non-GeographicNumber Portability (BT FreeFone)For calls to a BT number ported to a CP

Direction of call


£ POLO

£ APC







Charges are the same as for CP Imported non-Geographic Number Portability, but as there is

no charge to the caller, the flow of money is in the other direction.


CP A customer

BT

CP B

Part 3.27.6 - Non-Geographic NumberPortability TransitTransit of a CP’s number ported to another CP

Direction of call


£ retail

This situation occurs where a CP has ported an NTS/PRS number to another CP and wishes BT to be used to transit the call.

BT charges the originating CP an EBC related Transit charge.CP A and CP B may agree any payment they wish, BT does

not get involved in the establishment of the CP to CP charge.

CP A

£ ROLO





0800,0808, 0845, 0870, 090X number ranges

£ CP AGREED CHARGES


Element Based Charging (EBC)used within both BT Basic and BT Transit Telephony

Element Based Charging uses switch related elements for charging.This allows BT to recover costs based upon the amount of ‘work’ done withinour network when carrying a call, depending on how much switching and howfar (in some cases) we carry the call before delivery.

This method of charging is applicable for services such as BT Basic TelephonyPart 1.01, and BT Transit to CP Telephony Part 1.12.

As part of BT’s Least Cost Routing ‘Pricing Promise’, the actual route of each call is not considered, but the ‘shortest path’ method is used. Using this method, all possible call routes are considered (even backup circuits and private links) when evaluating the ‘shortest path’, so that a CP is never over-charged for a call by this method, even when those circuits will never be used for those types of telephony.The customer is always charged based upon the theoretical least cost (shortest) route !

The EBC bands are described in the following slides...


Element Based Charging (EBC)BT Terminating

BT DMSU

BT DLE

BT customer

CPSWITCH

BT DLE

BT customer

CPSWITCH

BT DMSU BT DLE

BT customer

CPSWITCH BT DMSU

Local Exchange

Single Tandem

Double Tandem

For calls originating on a CP’s network and

terminating on the BT network (Part 1.01, 1.10)

For Double Tandem calls there is an additional distance element (short <100km, medium 100-200km, long >200km). The distance between all DMSUs (there may be more than two) is considered for this

distance element.

Distanceelement


Element Based Charging (EBC)CP Terminating (TRANSIT)

BT DMSU

CP B customer

CP ASWITCH

Single Tandem

Double Tandem

For calls originating on a CP’s network, transiting the BT network

and terminating on another CP’s network (Part 1.12.1)

For Double Tandem calls there is an additional distance element (short <100km, medium 100-200km, long >200km). The distance between all DMSUs (as there may be more than two) is considered for this

distance element.

Local Exchanges cannot generally be used as transit switches and

therefore there is no Local Exchange element for transit call

types.

CP BSWITCH

BT DMSU

CP B customer

CP ASWITCH

CP BSWITCHBT DMSU

Distanceelement


BT customer DQ 118 Service

BT CP

Charging for DQ118

BT originates calls which are terminated on CP networks

Direction of call


£ POLO [accounting for BT retention]

£ retail

118XXX number ranges

Note: BT also terminates calls from CP networks to BT DQ118 services in the reverse of the above.


CP A customer

BT CP B

Charging for DQ118

BT transits DQ118 traffic from one CP’s network to another

Direction of call


£ POLO

£ retail

Note : For DQ118 number ranges BT recovers the TWIX from the terminator.

CP A

£ ROLO(= £ POLO)

BT keeps TWIX £ TWIX

DQ 118 Service

118XXX number ranges

issue 3.2 (1 st june 2012)author: zack thompson1 ncc carrier price list (cpl) guidance slides...

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