(19)

(11)

EP 1 236 312 A2

(12)

(88) Date of publication A3: 27.12.2001 (43) Date of publication: 04.09.2002 Bulletin 2002/36 (21) Application number: 00982275.0 (22) Date of filing: 30.11.2000

(51) International Patent Classification (IPC)7: H04L 12/56 (86) International application number: PCT/US0032/514 (87) International publication number: WO 0104/1380 (07.06.2001 Gazette 2001/23)

(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: 30.11.1999 US 168426 P 23.06.2000 US 213666 P 28.11.2000 US 728380 (71) Applicant: Siemens Technology-to-Business Center, LLC Berkeley, CA 94704 (US)	(72) Inventor: NAVAS, Julio, C. Walnut Creek, CA 94596 (US) (74) Representative: Vigars, Christopher Ian  Haseltine Lake & Co.,Imperial House,15-19 Kingsway London WC2B 6UD London WC2B 6UD (GB)