(19)

(11)

EP 2 572 523 A1

(12)

(43) Date of publication: 27.03.2013 Bulletin 2013/13 (21) Application number: 11736306.9 (22) Date of filing: 28.06.2011

(51) International Patent Classification (IPC):  H04W 4/16(2009.01) H04M 7/00(2006.01) H04M 3/54(2006.01) H04M 3/533(2006.01) (86) International application number: PCT/EP2011/060859 (87) International publication number: WO 2012/001016 (05.01.2012 Gazette 2012/01)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (30) Priority: 18.10.2010 US 394297 P 13.08.2010 US 373462 P 28.06.2010 US 359094 P (71) Applicant: Skype Ireland Technologies Holdings Dublin 2 (IE)	(72) Inventor: CHU, Enlai San Francisco, California 94110 (US) (74) Representative: Driver, Virginia Rozanne  Page White & Farrer Bedford House John Street London WC1N 2BF London WC1N 2BF (GB)