(19)

(11)

EP 1 243 098 A2

(12)

(88) Date of publication A3: 14.03.2002 (43) Date of publication: 25.09.2002 Bulletin 2002/39 (21) Application number: 00986526.2 (22) Date of filing: 18.12.2000

(51) International Patent Classification (IPC)7: H04L 12/10, H04L 12/413 (86) International application number: PCT/US0034/344 (87) International publication number: WO 0104/7188 (28.06.2001 Gazette 2001/26)

(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: 20.12.1999 US 172986 P (71) Applicant: Mitel Semiconductor V. N. Inc. Irvine, CA 92606 (US)	(72) Inventors: YIK, James, Ching-Shau Mission Viejo, CA 92691 (US) WANG, Linghsiao Tustin, CA 92780 (US) (74) Representative: Harding, Richard Patrick  Marks & Clerk,4220 Nash CourtOxford Business Park South Oxford OX4 2RU Oxford OX4 2RU (GB)