(19)

(11)

EP 1 234 409 A2

(12)

(88) Date of publication A3: 07.09.2001 (43) Date of publication: 28.08.2002 Bulletin 2002/35 (21) Application number: 00957346.0 (22) Date of filing: 09.08.2000

(51) International Patent Classification (IPC)7: H04L 12/28 (86) International application number: PCT/US0021/746 (87) International publication number: WO 0101/9080 (15.03.2001 Gazette 2001/11)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 03.09.1999 US 390584 (71) Applicant: Ericsson Inc. Research Triangle Park, N.C. 27709 (US)	(72) Inventors: NOVI, Matthew, T. Lynchburg, VA 24052 (US) CONNOR, Brenda, Ann Forest, VA 24551 (US) (74) Representative: Stenborg, Anders Vilhelm et al Aros Patent AB,P.O. Box 1544 751 45 Uppsala 751 45 Uppsala (SE)