(19)

(11)

EP 1 186 179 A1

(12)

(43) Date of publication: 13.03.2002 Bulletin 2002/11 (21) Application number: 00931374.3 (22) Date of filing: 12.05.2000

(51) International Patent Classification (IPC)7: H04Q 3/00, H04Q 11/04 (86) International application number: PCT/GB0001/824 (87) International publication number: WO 0076/227 (14.12.2000 Gazette 2000/50)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 03.06.1999 GB 9912860 (71) Applicant: MARCONI COMMUNICATIONS LIMITED Coventry, CV3 1HJ (GB)	(72) Inventor: Betteley, Steven NuneatonWarwickshire CV11 6NN (GB) (74) Representative: Hoste, Colin Francis et al Marconi Intellectual PropertyMarrable HouseZhe Vineyards Gt. BaddowChelmsfordEssex CM2 7QS Gt. BaddowChelmsfordEssex CM2 7QS (GB)