(19)

(11)

EP 2 335 378 A1

(12)

(43) Date of publication: 22.06.2011 Bulletin 2011/25 (21) Application number: 09785606.6 (22) Date of filing: 09.09.2009

(51) International Patent Classification (IPC):  H04L 12/14(2006.01) (86) International application number: PCT/GB2009/051150 (87) International publication number: WO 2010/029354 (18.03.2010 Gazette 2010/11)

(84) Designated Contracting States: 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 SE SI SK SM TR Designated Extension States: AL BA RS (30) Priority: 09.09.2008 GB 0816449 (71) Applicant: Vodafone Group PLC Newbury Berkshire RG14 2FN (GB)	(72) Inventors: FOX, David, Andrew Newbury Berkshire RG14 2FN (GB) FROST, Tim Newbury Berkshire RG14 2FN (GB) WONG, Gavin Newbury Berkshire RG14 2FN (GB) (74) Representative: Ellis, Lyle John  Vodafone Group Services Ltd Babbage House The Connection Newbury, Berkshire RG14 2FN Newbury, Berkshire RG14 2FN (GB)