(19)

(11)

EP 1 086 569 A1

(12)

(43) Date of publication: 28.03.2001 Bulletin 2001/13 (21) Application number: 99957127.6 (22) Date of filing: 10.06.1999

(51) International Patent Classification (IPC)7: H04M 3/50 (86) International application number: PCT/GB9901/836 (87) International publication number: WO 9966/703 (23.12.1999 Gazette 1999/51)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 17.06.1998 EP 98304784 (71) Applicant: BRITISH TELECOMMUNICATIONS public limited company London EC1A 7AJ (GB)	(72) Inventors: COOKE, Michael Martin Felixstowe,Suffolk IP11 8DS (GB) PATIENT, Richard Neville Ipswich,Suffolk IP4 2RG (GB) (74) Representative: Lidbetter, Timothy Guy Edwin et al British Telecommunications PLC,BT Group Legal Services,Int. Prop. Dep.,8th Floor,120 Holborn London EC1N 2TE London EC1N 2TE (GB)