(19)

(11)

EP 0 981 891 A1

(12)

(43) Date of publication: 01.03.2000 Bulletin 2000/09 (21) Application number: 98923254.1 (22) Date of filing: 11.05.1998

(51) International Patent Classification (IPC)7: H04M 3/46, H04M 15/00 (86) International application number: PCT/SE9800/856 (87) International publication number: WO 9852/340 (19.11.1998 Gazette 1998/46)

(84) Designated Contracting States: CH DE DK ES FI FR GB IE IT LI NL SE (30) Priority: 14.05.1997 SE 9701810 (71) Applicant: TELEFONAKTIEBOLAGET LM ERICSSON 126 25 Stockholm (SE)	(72) Inventors: LJUNGQVIST, Per S-655 93 Karlstad (SE) DAHL N, Johan S-663 32 Skoghall (SE) (74) Representative: Cederbom, Hans Erik August et al Cegumark AB,Box 53047 400 14 Göteborg 400 14 Göteborg (SE)