(19)

(11)

EP 1 620 989 A1

(12)

(43) Date of publication: 01.02.2006 Bulletin 2006/05 (21) Application number: 03780190.9 (22) Date of filing: 15.12.2003

(51) International Patent Classification (IPC):  H04L 29/06(1990.01) G06F 15/16(1968.09) (86) International application number: PCT/FI2003/000956 (87) International publication number: WO 2004/066579 (05.08.2004 Gazette 2004/32)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR (30) Priority: 17.01.2003 FI 20030073 (71) Applicant: Netseal Mobility Technologies - NMT Oy 02150 Espoo (FI)	(72) Inventor: PIETIKÄINEN, Ilkka FIN-02940 Espoo (FI) (74) Representative: Savela, Antti-Jussi Tapani  Patent Agency Compatent Ltd. Hitsaajankatu 6 00810 Helsinki 00810 Helsinki (FI)