(19)

(11)

EP 0 937 350 A1

(12)

(43) Date of publication: 25.08.1999 Bulletin 1999/34 (21) Application number: 98910767.0 (22) Date of filing: 23.03.1998

(51) International Patent Classification (IPC):  H04J 3/ 06( . ) H04L 7/ 04( . ) (86) International application number: PCT/FI1998/000254 (87) International publication number: WO 1998/043387 (01.10.1998 Gazette 1998/39)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV RO SI (30) Priority: 24.03.1997 FI 19970001230 (71) Applicant: NOKIA TELECOMMUNICATIONS OY 02150 Espoo (FI)	(72) Inventor: SUVANEN, Jyri FIN-00560 Helsinki (FI) (74) Representative: Savela, Antti-Jussi, et al  Patent Agency Compatent Ltd. P.O. Box 156 00511 Helsinki 00511 Helsinki (FI)