(19)

(11)

EP 1 157 533 A2

(12)

(88) Date of publication A3: 21.12.2000 (43) Date of publication: 28.11.2001 Bulletin 2001/48 (21) Application number: 00915629.0 (22) Date of filing: 22.02.2000

(51) International Patent Classification (IPC)7: H04M 11/06, H04M 3/54 (86) International application number: PCT/SE0000/355 (87) International publication number: WO 0052/908 (08.09.2000 Gazette 2000/36)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 02.03.1999 SE 9900760 (71) Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (publ) 126 25 Stockholm (SE)	(72) Inventor: ANDREASON, Tomas S-135 61 Tyresö (SE) (74) Representative: Holmberg, Nils Anders Patrik  Dr Ludwig Brann Patentbyra ABP.O. Box 17192 104 62 Stockholm 104 62 Stockholm (SE)