(19)

(11)

EP 1 013 012 A1

(12)

(43) Date of publication: 28.06.2000 Bulletin 2000/26 (21) Application number: 98900923.8 (22) Date of filing: 20.01.1998

(51) International Patent Classification (IPC)7: H04B 10/207, H04J 14/02, H04Q 11/00 (86) International application number: PCT/GB9800/169 (87) International publication number: WO 9833/287 (30.07.1998 Gazette 1998/30)

(84) Designated Contracting States: BE CH DE ES FR GB IT LI NL (30) Priority: 27.01.1997 GB 9701591 (71) Applicant: BRITISH TELECOMMUNICATIONS public limited company London EC1A 7AJ (GB)	(72) Inventor: HILL, Alan, Michael Woodbridge,Suffolk IP13 6TP (GB) (74) Representative: Wells, David  BT Group Legal ServicesIntellectual Property Department,8th Floor, Holborn Centre120 Holborn London EC1N 2TE London EC1N 2TE (GB)