(19)
(11) EP 1 464 123 A1

(12)

(43) Date of publication:
06.10.2004 Bulletin 2004/41

(21) Application number: 02794022.0

(22) Date of filing: 25.11.2002
(51) International Patent Classification (IPC)7H04B 3/20, H04M 9/08
(86) International application number:
PCT/US2002/037825
(87) International publication number:
WO 2003/052959 (26.06.2003 Gazette 2003/26)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 14.12.2001 US 16874

(71) Applicant: Worldcom, Inc.
Clinton, MS 39056 (US)

(72) Inventor:
  • PATERNO, Gregory, J.
    Plano, TX 75023 (US)

(74) Representative: Hofmann, Harald 
Sonnenberg Fortmann,Patent- & Rechtsanwälte,Postfach 33 08 65
80068 München
80068 München (DE)

   


(54) SYSTEMS AND METHODS FOR PROVIDING ECHO CONTROL