(19)

(11)

EP 1 181 793 A1

(12)

(43) Date of publication: 27.02.2002 Bulletin 2002/09 (21) Application number: 00922344.7 (22) Date of filing: 11.05.2000

(51) International Patent Classification (IPC)7: H04L 12/66, H04M 1/64, H04M 3/50, G06F 13/38 (86) International application number: PCT/AU0000/430 (87) International publication number: WO 0069/132 (16.11.2000 Gazette 2000/46)

(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: 11.05.1999 AU PP028599 (71) Applicant: Vista Group Pty. Limited Dural, NSW 2158 (AU)	(72) Inventor: MCNAMEE, John, Christopher Dural, NSW 2158 (AU) (74) Representative: Bardo, Julian Eason et al Abel & Imray 20 Red Lion Street London WC1R 4PQ London WC1R 4PQ (GB)