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EP 1 813 078 A1

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(43) Date of publication: 01.08.2007 Bulletin 2007/31 (21) Application number: 05792578.6 (22) Date of filing: 30.09.2005

(51) International Patent Classification (IPC):  H04L 29/06(2006.01) H04L 29/12(2006.01) H04Q 7/38(2006.01) (86) International application number: PCT/EP2005/010590 (87) International publication number: WO 2006/045402 (04.05.2006 Gazette 2006/18)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 26.10.2004 WO PCT/EP2004/012052 (71) Applicant: Telecom Italia S.p.A. 20123 Milano (IT)	(72) Inventors: DE LUTIIS, Paolo, Telecom Italia S.p.A. I-10148 Torino (IT) DI CAPRIO, Gaetano, Telecom Italia S.p.A. I-10148 Torino (IT) MOISO, Corrado, Telecom Italia S.p.A. I-10148 Torino (IT) (74) Representative: Giannesi, Pier Giovanni  Pirelli & C. S.p.A. Viale Sarca, 222 20126 Milan 20126 Milan (IT)