(19)

(11)

EP 1 293 065 A1

(12)

(43) Date of publication: 19.03.2003 Bulletin 2003/12 (21) Application number: 00939872.8 (22) Date of filing: 14.06.2000

(51) International Patent Classification (IPC)7: H04L 12/56, H04Q 11/04 (86) International application number: PCT/US0016/362 (87) International publication number: WO 0109/7470 (20.12.2001 Gazette 2001/51)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: Nortel Networks Limited St. Laurent,Quebec H4S 2A9 (CA)	(72) Inventor: MATTSON, Geoffery, A. F-06600 Antibes (FR) (74) Representative: Tocher, Alastair James et al Nortel Networks LimitedIntellectual Property Law GroupLondon Road Harlow, Essex CM17 9NA Harlow, Essex CM17 9NA (GB)