(19)

(11)

EP 1 208 656 A1

(12)

(43) Date of publication: 29.05.2002 Bulletin 2002/22 (21) Application number: 00946091.6 (22) Date of filing: 10.07.2000

(51) International Patent Classification (IPC)7: H04B 3/58 (86) International application number: PCT/GB0002/667 (87) International publication number: WO 0111/799 (15.02.2001 Gazette 2001/07)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 09.08.1999 US 370717 (71) Applicant: Nortel Networks Limited St. Laurent,Quebec H4S 2A9 (CA)	(72) Inventor: RICKARD, Robin Paul Spellbro ok CM22 7SG (GB) (74) Representative: Bewley, Ewan Stuart et al Nortel Networks,IP Law Group,London Road Harlow,Essex CM17 9NA Harlow,Essex CM17 9NA (GB)