1. Issue 3.2 (1 st June 2012)Author: Zack Thompson1 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: btcs.pricing@bt.com

2. Issue 3.2 (1 st June 2012)Author: Zack Thompson2 INDEX

3. Issue 3.2 (1 st June 2012)Author: Zack Thompson3 CP customer BT customer BT CP Part 1.01 - BT Basic Telephony For calls terminating on BT basic telephony services Direction of call Direction of payment £ ROLO £ retail The distance BT carries the call within its network determines the EBC-related distance that is charged. (Local, Single Tandem, or Double Tandem) Geographic number ranges

4. Issue 3.2 (1st June 2012)Author: Zack Thompson4 BT customer CP customer BTCP Part 1.02 - CP Telephony (Basic) For calls terminating on CP basic telephony services Direction of call Direction of payment £ POLO £ retail Basic Telephony is subject to Ofcom’s Statement & Final Guidance on setting Fair & Reasonable CP Fixed Termination Rates (FTRs), published on 27 th April 2011. From 1 st October 2012, it is expected that CP FTRs will be equal to the BT LES rate (“the Benchmark FTR”). Geographic number ranges

5. Issue 3.2 (1st June 2012)Author: Zack Thompson5 BT customer SP customer BTCP Part 1.02 - CP Telephony (NTS) For calls terminating on CP NTS telephony services Direction of call Direction of payment £ POLO £ retail £ rental of number range £ service membership Service Provider NTS is usually for services where a service provider rents the number from the CP and uses it to provide services to retail customers. PRS calls are usually NTS based as well. 0845, 0870, 090X number ranges

6. Issue 3.2 (1 st June 2012)Author: Zack Thompson6 BT customer SP customer BTCP Part 1.02 - CP Telephony (NTS Free Phone) For calls terminating on CP NTS telephony services Direction of call Direction of payment £ POLO £ rental of number range £ service membership Service Provider 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

7. Issue 3.2 (1 st June 2012)Author: Zack Thompson7 BT customer SP customer BTCP Part 1.02 - CP Telephony (PNS) For calls terminating on CP PNS telephony services Direction of call Direction of payment £ POLO £ retail £ rental of number range £ service membership Service Provider PNS is usually for services where calls are re-directed to a number of possible numbers, basic telephony, mobile, or even international destinations may be allowed. SP customer £ service membership 070X number ranges

8. Issue 3.2 (1st June 2012)Author: Zack Thompson8 CP customer BTCP Part 1.02 - CP Telephony (International Incoming) For calls originating overseas Direction of call Direction of payment £ POLO £ agreed overseas charge (may be capped) Most forms of CP Telephony covered under Part 1.02 may 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. Overseas Administration Any non-PRS number ranges

9. Issue 3.2 (1st June 2012)Author: Zack Thompson9 CP customer CPBT Part 1.04 - BT International Telephony For calls terminating on overseas administrations Direction of call Direction of payment £ ROLO £ retail The CP may interconnect to either a BT DMSU, or a BT ISC (which incurs a lower charge because all calls are carried internationally via the ISC) Overseas Administration BT DMSU or BT ISC £ agreed overseas charge 00 International number ranges

10. Issue 3.2 (1st June 2012)Author: Zack Thompson10 CP customer SP customer CPBT Part 1.06 - BT Telephony (NTS) For calls terminating on BT NTS telephony services Direction of call Direction of payment £ ROLO £ retail £ rental of number range £ service membership Service Provider NTS is usually for services where a service provider rents the number from the CP and uses it to provide services to retail customers. PRS calls are usually NTS based as well. 0845, 0870, 090X number ranges

11. Issue 3.2 (1st June 2012)Author: Zack Thompson11 CP customer SP customer CPBT Part 1.06 - BT Telephony (NTS BT FreeFone) For calls terminating on BT NTS telephony services Direction of call Direction of payment £ ROLO £ rental of number range £ service membership Service Provider 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

12. Issue 3.2 (1st June 2012)Author: Zack Thompson12 CP customer (A Payphone Access Charge may apply. See Part 1.09). BTCP Part 1.10 - Indirect Access Calls to the CP System For Indirect Access calls to the CP (usually 0800 / 0808 1XXX IA) Direction of call Direction of payment £ ROLO ‘free to caller’ Indirect Access calls use the EBC method to determine the distance a call is carried within the BT network. £ service membership 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

13. Issue 3.2 (1st June 2012)Author: Zack Thompson13 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 Direction of payment £ 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 Geographic number ranges

14. Issue 3.2 (1st June 2012)Author: Zack Thompson14 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 Direction of payment £ 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 03 UK Wide number ranges

15. Issue 3.2 (1st June 2012)Author: Zack Thompson15 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 Direction of payment £ 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 056 LIECS number ranges

16. Issue 3.2 (1st June 2012)Author: Zack Thompson16 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 Direction of payment £ POLO £ retail 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. 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 £ rental of number range £ service membership Service Provider 0845, 0870, 090X number ranges

17. Issue 3.2 (1st June 2012)Author: Zack Thompson17 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 Direction of payment £ POLO ‘free to caller’ 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 £ rental of number range £ service membership Service Provider 0800, 0808 number ranges

18. Issue 3.2 (1st June 2012)Author: Zack Thompson18 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 Direction of payment £ POLO £ retail CP A £ ROLO (= £ POLO + TWIX) BT keeps TWIX SP customer £ rental of number range £ service membership Service Provider 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 £ service membership

19. Issue 3.2 (1st June 2012)Author: Zack Thompson19 CP customer CPBT Part 3.26a - BT Imported Non-Geographic Number Portability For calls to a CP ‘s number ported to BT Direction of call Direction of payment £ 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. 0845, 0870, 090X number ranges £ 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.

20. Issue 3.2 (1st June 2012)Author: Zack Thompson20 CP customer CPBT Part 3.26a - BT Imported Non-Geographic Number Portability (Free Phone) For calls to a CP’s number ported to BT Direction of call Direction of payment £ 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. 0800, 0808 number ranges £ 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. ‘free to caller’

21. Issue 3.2 (1st June 2012)Author: Zack Thompson21 BT customer BTCP Part 3.27 - CP Imported Non-Geographic Number Portability For calls to a BT number ported to a CP Direction of call Direction of payment £ POLO £ retail This 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. 0845, 0870, 090X number ranges £ APC The final service may not be owned by the CP, and may be translated to either BT, or another CP. These are treated as separate calls covered under other parts of the Carrier Price List.

22. Issue 3.2 (1st June 2012)Author: Zack Thompson22 BT customer BTCP Part 3.27 - CP Imported Non-Geographic Number Portability (BT FreeFone) For calls to a BT number ported to a CP Direction of call Direction of payment £ POLO £ APC The final service may not be owned by the CP, and may be translated to either BT, or another CP. These are treated as separate calls covered under other parts of the Carrier Price List. 0800, 0808 number ranges ‘free to caller’ 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.

23. Issue 3.2 (1st June 2012)Author: Zack Thompson23 CP A customer BT CP B Part 3.27.6 - Non-Geographic Number Portability Transit Transit of a CP’s number ported to another CP Direction of call Direction of payment £ 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 The final service may not be owned by the CP, and may be translated to either BT, or another CP. These are treated as separate calls covered under other parts of the Carrier Price List. 0800,0808, 0845, 0870, 090X number ranges £ CP AGREED CHARGES

24. Issue 3.2 (1st June 2012)Author: Zack Thompson24 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 within our network when carrying a call, depending on how much switching and how far (in some cases) we carry the call before delivery. This method of charging is applicable for services such as BT Basic Telephony Part 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...

25. Issue 3.2 (1st June 2012)Author: Zack Thompson25 Element Based Charging (EBC) BT Terminating BT DMSU BT DLE BT customer CP SWITCH BT DLE BT customer CP SWITCH BT DMSUBT DLE BT customer CP SWITCH 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 200km). The distance between all DMSUs (there may be more than two) is considered for this distance element. Distance element

26. Issue 3.2 (1st June 2012)Author: Zack Thompson26 Element Based Charging (EBC) CP Terminating (TRANSIT) BT DMSU CP B customer CP A SWITCH 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 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 B SWITCH BT DMSU CP B customer CP A SWITCH CP B SWITCH BT DMSU Distance element

27. Issue 3.2 (1st June 2012)Author: Zack Thompson27 BT customer DQ 118 Service BTCP Charging for DQ118 BT originates calls which are terminated on CP networks Direction of call Direction of payment £ 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.

28. Issue 3.2 (1st June 2012)Author: Zack Thompson28 CP A customer BT CP B Charging for DQ118 BT transits DQ118 traffic from one CP’s network to another Direction of call Direction of payment £ 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