(19)

(11)

EP 0 919 089 A1

(12)

(43) Date of publication: 02.06.1999 Bulletin 1999/22 (21) Application number: 97940122.0 (22) Date of filing: 25.08.1997

(51) International Patent Classification (IPC):  H04L 12/ 24( . ) (86) International application number: PCT/EP1997/004614 (87) International publication number: WO 1998/009402 (05.03.1998 Gazette 1998/09)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB IE IT LI LU NL SE (30) Priority: 27.08.1996 GB 19960017859 (71) Applicant: Metrix S.A. 1813 Hawald (LU)	(72) Inventors: RAFATJOO, Bahman B-6741 Vance (BE) MUNK-JAKOBSEN, Thomas L-1813 Hawald (LU) (74) Representative: Haley, Stephen, et al  Gill Jennings & Every, Broadgate House, 7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)