(19)

(11)

EP 1 323 286 A2

(12)

(88) Date of publication A3: 10.04.2003 (43) Date of publication: 02.07.2003 Bulletin 2003/27 (21) Application number: 01973878.0 (22) Date of filing: 13.09.2001

(51) International Patent Classification (IPC)7: H04M 3/56, H04M 7/00, H04M 1/253 (86) International application number: PCT/CA0101/298 (87) International publication number: WO 0202/5908 (28.03.2002 Gazette 2002/12)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 18.09.2000 US 664450 (71) Applicant: Nortel Networks Limited St. Laurent,Quebec H4S 2A9 (CA)	(72) Inventors: EDHOLM, Philip, K. Fremont, CA 94539 (US) SIMARD, Frederic, F. Nepean, Ontario K2H 5L2 (CA) BURNS, Nina, K. Columbia, MD 21044 (US) (74) Representative: Boyce, Conor et al F.R. Kelly & Co,27 Clyde Road Ballsbridge,Dublin 4 Ballsbridge,Dublin 4 (IE)