(19)

(11)

EP 2 050 008 A2

(12)

(88) Date of publication A3: 04.09.2008 (43) Date of publication: 22.04.2009 Bulletin 2009/17 (21) Application number: 07813927.6 (22) Date of filing: 09.08.2007

(51) International Patent Classification (IPC):  G06F 15/16(2006.01) (86) International application number: PCT/US2007/075554 (87) International publication number: WO 2008/021937 (21.02.2008 Gazette 2008/08)

(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 MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 11.08.2006 US 464077 11.08.2006 US 464071 11.08.2006 US 464091 (71) Applicant: AT&T Intellectual Property I, L.P. Reno, NV 89502 (US)	(72) Inventor: GLASGOW, Jay O. Acworth, GA 30102 (US) (74) Representative: Asquith, Julian Peter  Marks & Clerk LLP 4220 Nash Court Oxford Business Park South Oxford Oxfordshire OX4 2RU Oxford Business Park South Oxford Oxfordshire OX4 2RU (GB)