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(11)

EP 2 119 168 A1

(12)

(43) Date of publication: 18.11.2009 Bulletin 2009/47 (21) Application number: 07855460.7 (22) Date of filing: 05.12.2007

(51) International Patent Classification (IPC):  H04L 29/02(2006.01) H04L 12/58(2006.01) H04L 12/16(2006.01) H04Q 7/22(0000.00) (86) International application number: PCT/CA2007/002178 (87) International publication number: WO 2008/067654 (12.06.2008 Gazette 2008/24)

(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 (30) Priority: 05.12.2006 US 566812 (71) Applicant: Nortel Networks Limited St Laurent, Québec H4S 2A9 (CA)	(72) Inventor: COBBOLD, Mark Stittsville, Ontario K2S 1Z6 (CA) (74) Representative: Moir, Elizabeth et al EIP Fairfax House 15 Fulwood Place GB-London WC1V 6HU GB-London WC1V 6HU (GB)