(19)
(11) EP 1 819 103 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
Note: Bibliography reflects the latest situation

(15) Correction information:
Corrected version no 1 (W1 A2)

(48) Corrigendum issued on:
28.11.2007 Bulletin 2007/48

(43) Date of publication:
15.08.2007 Bulletin 2007/33

(21) Application number: 07109324.9

(22) Date of filing: 05.11.2001
(51) International Patent Classification (IPC): 
H04L 12/46(2006.01)
 H04L 29/06(2006.01)
(84) Designated Contracting States:
DE FR GB

(30) Priority: 13.11.2000 US 711549

(62) Application number of the earlier application in accordance with Art. 76 EPC:
01125460.4 / 1206079

(71) Applicant: AT&T Corp.
New York, NY 10013-2412 (US)

(72) Inventors:
  • Aldermeshian, Hrair
    Holmdel, NJ 07733 (US)
  • Chakravarti, Arvind S.
    Marlboro, NJ 07746 (US)
  • Hellstern, Richard
    Cranbury, NJ 08512 (US)
  • Kimber, Raymond, L.
    Eatontown, NJ 07724 (US)
  • Kujoory, Ali, Mohammad
    Petaluma, CA 94954 (US)
  • Levy, Jonatan, Aharon
    Manalapan, NJ 07726 (US)
  • Medamana, John, Babu
    Colts Neck, NJ 07722 (US)
  • Sikora, John, Joseph
    Lincroft, NJ 07738 (US)

(74) Representative: Modiano, Micaela Nadia 
Modiano Josif Pisanty & Staub Ltd Thierschstrasse 11
80538 München
80538 München (DE)

 
Remarks:
This application was filed on 31 - 05 - 2007 as a divisional application to the application mentioned under INID code 62.
 


(54) End-to-end prioritized data delivery on networks using IP over frame relay


(57) The invention provides methods and systems for providing priority processing to critical data as the data is transmitted across a network. A plurality of Internet protocol (IP) packets, each of which contains data and priority information, are received at a first router. The data contained in the IP packets is then encapsulated into frame relay frames containing the priority information. The frame relay frames are transmitted from the first router to a frame relay network in a manner determined by the priority information included in the frame relay frames. The frame relay frames are then transmitted across a frame relay network to a second router in a manner determined by the priority information included in the frame relay frames.