(19)

(11)

EP 1 212 862 A2

(12)

(88) Date of publication A3: 20.09.2001 (43) Date of publication: 12.06.2002 Bulletin 2002/24 (21) Application number: 00955836.2 (22) Date of filing: 23.08.2000

(51) International Patent Classification (IPC)7: H04J 14/02, H04Q 11/00 (86) International application number: PCT/US0023/051 (87) International publication number: WO 0115/368 (01.03.2001 Gazette 2001/09)

(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: 23.08.1999 US 150218 P (71) Applicant: Corvis Corporation Columbia, MD 21046-9400 (US)	(72) Inventors: SIMMONS, Jane M.Corvis Corporation Columbia, MD 21046-9400 (US) HUBER, David R.Corvis Corporation Columbia, MD 21046-9400 (US) (74) Representative: Callon de Lamarck, Jean-Robert et al Cabinet Régimbeau20, rue de Chazelles 75847 Paris cedex 17 75847 Paris cedex 17 (FR)