(19)
(11) EP 0 983 695 A2

(12)

(88) Date of publication A3:
28.01.1999

(43) Date of publication:
08.03.2000 Bulletin 2000/10

(21) Application number: 98917376.0

(22) Date of filing: 15.04.1998
(51) International Patent Classification (IPC)7: H04Q 7/22, H04Q 7/32
(86) International application number:
PCT/GB9801/104
(87) International publication number:
WO 9847/297 (22.10.1998 Gazette 1998/42)
(84) Designated Contracting States:
DE ES FR GB IT

(30) Priority: 16.04.1997 GB 9707726

(71) Applicant: Ionica International Limited
Cambridge CB4 4AS (GB)

(72) Inventors:
  • DRISCOLL, Richard
    Totnes,Devon TQ9 6JZ (GB)
  • KING, Nigel, Jonathan
    South Brent TQ10 9LF (GB)
  • MARTIN, Paul, Maxwell
    Newmarket,Suffolk CB8 9XS (GB)
  • PIERCY, Neil, Philip
    Royston,Herts SE8 6RE (GB)
  • ROLES, Nigel
    Cambridge CB4 4JN (GB)

(74) Representative: Hogg, Jeffery Keith et al
Withers & Rogers,Goldings House,2 Hays Lane
London SE1 2HW
London SE1 2HW (GB)

   


(54) A METHOD AND APPARATUS FOR DIGITAL DATA COMMUNICATIONS INCLUDING ADVANCE INDICATION OF A TRANSCODING CHANGE