(19)

(11)

EP 0 927 478 A1

(12)

(43) Date of publication: 07.07.1999 Bulletin 1999/27 (21) Application number: 97942057.0 (22) Date of filing: 24.09.1997

(51) International Patent Classification (IPC):  H04Q 11/ 04( . ) H04L 12/ 56( . ) (86) International application number: PCT/FI1997/000573 (87) International publication number: WO 1998/013975 (02.04.1998 Gazette 1998/13)

(84) Designated Contracting States: BE DE FR GB IT NL SE (30) Priority: 24.09.1996 FI 19960003797 23.10.1996 FI 19960004268 (71) Applicant: NOKIA TELECOMMUNICATIONS OY 02150 Espoo (FI)	(72) Inventor: MARKKI, Outi FIN-02600 Espoo (FI) (74) Representative: Honkanen, Jukka Samuli, et al  Patent Agency Compatent Ltd., P.O. Box 156 00511 Helsinki 00511 Helsinki (FI)