(19)

(11)

EP 0 962 082 A1

(12)

(43) Date of publication: 08.12.1999 Bulletin 1999/49 (21) Application number: 98905900.0 (22) Date of filing: 04.02.1998

(51) International Patent Classification (IPC):  H04J 3/ 16( . ) H04L 29/ 06( . ) H04L 12/ 56( . ) (86) International application number: PCT/SE1998/000201 (87) International publication number: WO 1998/037673 (27.08.1998 Gazette 1998/34)

(84) Designated Contracting States: CH DE DK FI FR GB LI NL SE Designated Extension States: LT LV (30) Priority: 24.02.1997 SE 19970000647 (71) Applicant: Telia AB (publ) 123 86 Farsta (SE)	(72) Inventor: HAGSTRÖM, Bengt S-125 33 Älvsjö (SE) (74) Representative: Akerman, Marten Lennart, et al  Albihns Patentbyra Malmö AB P.O.Box 4289 203 14 Malmö 4 203 14 Malmö 4 (SE)