(19)

(11)

EP 0 974 248 A1

(12)

(43) Date of publication: 26.01.2000 Bulletin 2000/04 (21) Application number: 98913770.8 (22) Date of filing: 07.04.1998

(51) International Patent Classification (IPC)7: H05F 3/02 (86) International application number: PCT/FI9800/303 (87) International publication number: WO 9846/055 (15.10.1998 Gazette 1998/41)

(84) Designated Contracting States: BE DE FR GB IT SE (30) Priority: 07.04.1997 FI 971446 (71) Applicant: Nokia Networks Oy 02150 Espoo (FI)	(72) Inventor: VERÄJÄNKORVA, Hanna FIN-02710 Espoo (FI) (74) Representative: Honkanen, Jukka Samuli et al Patent Agency Compatent Ltd.,Pitkänsillanranta 3 B 00530 Helsinki 00530 Helsinki (FI)