(19)

(11)

EP 0 966 848 A1

(12)

(43) Date of publication: 29.12.1999 Bulletin 1999/52 (21) Application number: 98909894.0 (22) Date of filing: 24.02.1998

(51) International Patent Classification (IPC):  H04M 3/ 54( . ) H04L 12/ 64( . ) H04Q 3/ 00( . ) H04M 3/ 38( . ) H04L 12/ 28( . ) H04M 7/ 00( . ) H04Q 3/ 66( . ) (86) International application number: PCT/SE1998/000331 (87) International publication number: WO 1998/041043 (17.09.1998 Gazette 1998/37)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 11.03.1997 SE 19970000872 (71) Applicants: TELEFONAKTIEBOLAGET L M ERICSSON (publ) 126 25 Stockholm (SE) TELIA AB 123 86 Farsta (SE)	(72) Inventors: FOGELHOLM, Rabbe S-191 47 Sollentuna (SE) SVEDBERG, Johan S-115 24 Stockholm (SE) (74) Representative: Forssell, Gunilla, et al  Albihns Patentbyra Stockholm AB, Box 5581 114 85 Stockholm 114 85 Stockholm (SE)