(19)

(11)

EP 0 965 193 A1

(12)

(43) Date of publication: 22.12.1999 Bulletin 1999/51 (21) Application number: 97942970.0 (22) Date of filing: 26.09.1997

(51) International Patent Classification (IPC):  H04J 3/ 06( . ) (86) International application number: PCT/FI1997/000583 (87) International publication number: WO 1998/015077 (09.04.1998 Gazette 1998/14)

(84) Designated Contracting States: BE CH DE DK FR GB IT LI NL PT SE (30) Priority: 30.09.1996 FI 19960003909 (71) Applicant: ABB Industry Oy 00380 Helsinki (FI)	(72) Inventor: KAINULAINEN, Jukka FIN-00720 Helsinki (FI) (74) Representative: Honkanen, Jukka Samuli, et al  Patent Agency Compatent Ltd., Pitkänsillanranta 3 B 00530 Helsinki 00530 Helsinki (FI)