(19)

(11)

EP 2 027 691 A1

(12)

(43) Date of publication: 25.02.2009 Bulletin 2009/09 (21) Application number: 07733235.1 (22) Date of filing: 15.06.2007

(51) International Patent Classification (IPC):  H04L 29/06(2006.01) (86) International application number: PCT/GB2007/002231 (87) International publication number: WO 2007/144638 (21.12.2007 Gazette 2007/51)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 15.06.2006 GB 0611911 (71) Applicant: Data Motion Limited Knowl Hill Reading Berkshire RG10 9YE (GB)	(72) Inventor: CARTLEDGE, Malcom Bourne End Buckinghamshire SL8 5QY (GB) (74) Representative: Round, Edward Mark  Marks & Clerk 90 Long Acre London WC2E 9RA London WC2E 9RA (GB)