(19)

(11)

EP 1 159 812 A1

(12)

(43) Date of publication: 05.12.2001 Bulletin 2001/49 (21) Application number: 00910452.2 (22) Date of filing: 15.03.2000

(51) International Patent Classification (IPC)7: H04L 29/06 (86) International application number: PCT/CA0000/276 (87) International publication number: WO 0056/027 (21.09.2000 Gazette 2000/38)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 15.03.1999 US 124487 P (71) Applicant: Texar Software Corp. Ottawa,Ontario K2C 3W7 (CA)	(72) Inventor: BACIC, Eugen Nepean, Ontario K2G 5R1 (CA) (74) Representative: Harding, Richard Patrick  Marks & Clerk4220 Nash CourtOxford Business Park South Oxford OX4 2RU Oxford OX4 2RU (GB)