(19)

(11)

EP 0 894 398 A1

(12)

(43) Date of publication: 03.02.1999 Bulletin 1999/05 (21) Application number: 97918178.0 (22) Date of filing: 05.05.1997

(51) International Patent Classification (IPC):  H04M 19/ 00( . ) (86) International application number: PCT/FI1997/000268 (87) International publication number: WO 1997/042750 (13.11.1997 Gazette 1997/49)

(84) Designated Contracting States: BE DE DK FR GB IT SE (30) Priority: 06.05.1996 FI 19960001917 (71) Applicant: NOKIA TELECOMMUNICATIONS OY 02150 Espoo (FI)	(72) Inventors: VARANKA, Kauko FIN-90830 Haukipudas (FI) SALO, Arto FIN-90460 Oulunsalo (FI) (74) Representative: Pakanen, Henrik Jorma, et al  Kolster Oy Ab, P.O. Box 148, Iso Roobertinkatu 23 00121 Helsinki 00121 Helsinki (FI)