(19)

(11)

EP 1 175 751 A1

(12)

(43) Date of publication: 30.01.2002 Bulletin 2002/05 (21) Application number: 00925341.0 (22) Date of filing: 12.05.2000

(51) International Patent Classification (IPC)7: H04L 12/00 (86) International application number: PCT/FI0000/428 (87) International publication number: WO 0070/825 (23.11.2000 Gazette 2000/47)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 12.05.1999 FI 991093 (71) Applicant: Nokia Networks OY 00045 Nokia Group (FI)	(72) Inventor: HUUSKO, Sami FIN-02120 Espoo (FI) (74) Representative: Pelin, Torolf  Berggren Oy Ab, P.O. Box 16 00101 Helsinki 00101 Helsinki (FI)