(19)

(11)

EP 0 981 925 A2

(12)

(88) Date of publication A3: 04.02.1999 (43) Date of publication: 01.03.2000 Bulletin 2000/09 (21) Application number: 98921511.6 (22) Date of filing: 12.05.1998

(51) International Patent Classification (IPC)7: H04Q 11/04, H04L 12/56, H04Q 7/22 (86) International application number: PCT/FI9800/401 (87) International publication number: WO 9852/327 (19.11.1998 Gazette 1998/46)

(84) Designated Contracting States: BE DE DK ES FR GB IT NL SE (30) Priority: 13.05.1997 FI 972039 (71) Applicant: Nokia Networks Oy 02150 Espoo (FI)	(72) Inventor: HIPPELÄINEN, Leo FIN-00670 Helsinki (FI) (74) Representative: Äkräs, Tapio Juhani et al Kolster Oy Ab,P.O. Box 148,Iso Roobertinkatu 23 00121 Helsinki 00121 Helsinki (FI)