(19)

(11)

EP 1 668 849 A1

(12)

(43) Date of publication: 14.06.2006 Bulletin 2006/24 (21) Application number: 04789213.8 (22) Date of filing: 30.09.2004

(51) International Patent Classification (IPC):  H04L 12/56(1990.01) (86) International application number: PCT/US2004/031918 (87) International publication number: WO 2005/034449 (14.04.2005 Gazette 2005/15)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 01.10.2003 US 676233 01.12.2003 US 526126 P 10.03.2004 US 551814 P 17.09.2004 US 943275 17.09.2004 US 943513 (71) Applicant: Santera Systems Inc. Plano, TX 75074 (US)	(72) Inventors: ZHU, Rupert Richardson, TX 75082 (US) LU, David, Z. Dallas, TX 75287 (US) LI, San-Qi Plano, TX 75093 (US) QIAN, Edward, Y. Plano, TX 75093 (US) (74) Representative: Reinhard - Skuhra - Weise & Partner  Friedrichstrasse 31 80801 München 80801 München (DE)