(19)

(11)

EP 1 025 515 A2

(12)

(88) Date of publication A3: 01.07.1999 (43) Date of publication: 09.08.2000 Bulletin 2000/32 (21) Application number: 98950574.8 (22) Date of filing: 19.10.1998

(51) International Patent Classification (IPC)7: G06F 17/30 (86) International application number: PCT/SE9801/872 (87) International publication number: WO 9921/109 (29.04.1999 Gazette 1999/17)

(84) Designated Contracting States: CH DE DK ES FI FR GB IT LI NL (30) Priority: 20.10.1997 SE 9703816 (71) Applicants: TELEFONAKTIEBOLAGET L M ERICSSON (publ) 126 25 Stockholm (SE) ES GB IT  Telia AB (publ) 123 86 Farsta (SE) CH DE DK FI FR GB LI NL	(72) Inventor: GUSTAFSSON, Henrik S-136 71 Haninge (SE) (74) Representative: Hammar, Ernst et al Albihns Patentbyra Stockholm ABP.O.Box 5581 114 85 Stockholm 114 85 Stockholm (SE)