ANNEX C

SCHEDULE 165

BT Ported NGCS Service Transit Calls or BT Ported 03 UK-wide Number Transit Calls via the BT System

1.	Definitions

1.1	In this Schedule, a reference to a paragraph or Appendix unless stated otherwise, is to a paragraph or Appendix of this Schedule. Words and expressions have the meaning given in Annex D except as shown below:

“BT Ported 03 UK-wide Number Transit Call”	a Call to a 03 UK-wide Number, prefixed by the Operator with a Ported NGCS Service Transit Prefix Code and handed over from the Operator System to the BT System, initially switched via a BT DMSU, and handed over from the BT System to the Recipient Third Party Operator’s system;
	
BT Ported NGCS Service Transit Call”	an NGCS Service Call, prefixed by the Operator with a Ported NGCS Service Transit Prefix Code and handed over from the Operator System to the BT System, initially switched via a BT DMSU, and handed over from the BT System to the Recipient Third Party Operator’s system;
	
“Ported NGCS Service Transit Prefix Code”	the network address code in the format 505xxx allocated by OFCOM which identifies the Recipient Third Party Operator’s system;
	
“Recipient Third Party Operator”	the Third Party Operator to whose system in the United Kingdom a BT Ported NGCS Service Transit Call or BT Ported 03 UK-wide Number Transit Call shall be handed over.	

2.	Description of Service

2.1	Subject to the provisions of this Schedule, BT shall convey BT Ported NGCS Service Transit Calls or BT Ported 03 UK-wide Number Transit Calls handed over from the Operator System to the Recipient Third Party Operator’s system provided that:

2.1.1	the total number of dialled digits and associated Ported NGCS Transit Prefix Code required to be stored in the BT System does not exceed the maximum capability of the BT System (Note: this capability applies to each Call); and 

2.1.2 	the Recipient Third Party Operator has implemented the relevant Ported NGCS Service Transit Prefix Code databuild work; and

2.1.3	the Operator has ordered and BT has implemented the relevant Ported NGCS Service Transit Prefix Code databuild work.

2.2	The Operator shall only hand over BT Ported NGCS Service Transit Calls or BT Ported 03 UK-wide Number Transit Calls to the BT System provided that the correct Ported NGCS Service Transit Prefix Code has been applied by the Operator to each Call.

2.3	BT Telephony Calls, BT Transit Calls, BT Operator to Operator Transit Calls, BT NGCS Service Calls, BT 03 UK-wide Number Calls and BT International Outgoing Calls are not conveyed pursuant to this Schedule.

2.4	The Parties shall agree in advance all necessary technical requirements, including Call set-up and cleardown sequences, for the conveyance of Calls pursuant to this Schedule. The Parties shall convey such Calls in accordance with the agreed technical requirements, and shall not make any changes thereto unless otherwise agreed by the Parties.

2.5	BT shall convey BT Ported NGCS Service Transit Calls and BT Ported 03 UK-wide Number Transit Calls during those periods of time and at the same standard and quality of service as BT conveys similar Calls. For the avoidance of doubt, BT can have no responsibility or liability for the acts or omissions of the Recipient Third Party Operator in respect of BT Ported NGCS Service Transit Calls or BT Ported 03 UK-wide Number Transit Calls handed over by BT to such operator.

2.6	Each Party shall correct faults which occur in its System which affect the conveyance of BT Ported NGCS Service Transit Calls or BT Ported 03 UK-wide Number Transit Calls in accordance with such Party’s normal engineering practices. For the avoidance of doubt, neither Party warrants that its System is, or will be, free from faults.

2.7	If there are abnormally high volumes of BT Ported NGCS Service Transit Calls or BT Ported 03 UK-wide Number Transit Calls that the BT System or the Recipient Third Party Operator’s system cannot convey, the Operator may apply network management controls in the Operator System or BT may apply network management controls in the BT System.

3.	Planning and Operations

3.1	The conveyance of BT Ported NGCS Service Transit Calls shall be in accordance with the routing principles specified in Annex A. BT Ported 03 UK-wide Number Transit Calls shall be routed as if they were BT Ported NGCS Service Transit Calls.

4.	Charging

4.1	For the conveyance of each BT Ported NGCS Service Transit Call or BT Ported 03 UK-wide Number Transit Call by BT, the Operator as Range Holder shall pay BT a charge calculated in accordance with the rate for such a Call specified from time to time in the Carrier Price List.

4.2	For the avoidance of doubt, the Operator as Range Holder shall be responsible for settlement with the specified Recipient Third Party Operator for the origination/termination elements of such BT Ported NGCS Service Transit Calls or BT Ported 03 UK-wide Number Transit Calls.

5.		Commencement

5.1	BT shall convey	BT Ported NGCS Service Transit Calls or BT Ported 03 UK-wide Number Transit Calls commencing on a date to be agreed in writing by the Parties.