(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)
7
:
H04B
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