(19)

(11)

EP 4 408 779 A1

(12)

(43) Date of publication: 07.08.2024 Bulletin 2024/32 (21) Application number: 22785939.4 (22) Date of filing: 09.09.2022

(51) International Patent Classification (IPC):  B65H 49/28(2006.01) B65H 59/06(2006.01) B65H 59/36(2006.01) B65H 57/18(2006.01) B65H 59/16(2006.01) (52) Cooperative Patent Classification (CPC): B65H 49/28; B65H 57/18; B65H 59/06; B65H 59/16; B65H 59/36 (86) International application number: PCT/EP2022/075154 (87) International publication number: WO 2023/052087 (06.04.2023 Gazette 2023/14)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 30.09.2021 GB 202114012 (71) Applicant: British Telecommunications public limited company London, Greater London E1 8EE (GB)	(72) Inventors: FISK, Christopher London E1 8EE (GB) HARRIS, Matthrew London E1 8EE (GB) HUNTER, Ian London E1 8EE (GB) WOODS, Stephen London E1 8EE (GB) MARTIN, Peter London E1 8EE (GB) (74) Representative: British Telecommunications public limited company Intellectual Property Department  9th Floor One Braham Braham Street London E1 8EE London E1 8EE (GB)