Integrated Services Digital Network(ISDN) means a network evolved from the telephony integrated digital network that provides for end-to-end digital connectivity to support a wide range of services, including voice and non-voice services, to which users have access by standard multipurpose customer interfaces;
the Actmeans the Telecommunications Act 1984;
the Amending Interconnection Directivemeans Directive 98/61/EC of the European Parliament and of the Council amending the Interconnection Directive with regard to operator number portability and carrier pre-selection;
the BT Licencemeans the licence granted by the Secretary of State under section 7 of the 1984 Act to British Telecommunications plc on 22 June 1984 to run the telecommunication systems referred to in Annex A thereof, in relation to which that company became the licensee as the nominated successor company on the transfer date;
the Interconnection Directivemeans Directive 97/33/EC of the European Parliament and of the Council of 30 June 1997 on interconnection in telecommunications with regard to ensuring universal service and interoperability through application of the principles of Open Network Provision;
the principal Regulationsmeans the Telecommunications (Interconnection) Regulations 1997;
the Standard Schedules Regulationsmeans the Telecommunications (Licence Modification) (Standard Schedules) Regulations 1999.