(19)

(11)

EP 2 078 406 A2

(12)

(88) Date of publication A3: 30.10.2008 (43) Date of publication: 15.07.2009 Bulletin 2009/29 (21) Application number: 07824366.4 (22) Date of filing: 29.10.2007

(51) International Patent Classification (IPC):  H04L 29/06(2006.01) (86) International application number: PCT/GB2007/004122 (87) International publication number: WO 2008/050146 (02.05.2008 Gazette 2008/18)

(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 NL PL PT RO SE SI SK TR (30) Priority: 27.10.2006 GB 0621437 30.05.2007 US 940746 P (71) Applicant: Secustream Technologies AS 7013 Trondheim (NO)	(72) Inventors: GRIMEN, Gisle 7052 Trondheim (NO) MÖNCH, Christian 7010 Trondheim (NO) (74) Representative: Jackson, Robert Patrick  Frank B. Dehn & Co. St Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)