CA2289275A1 - Systeme et methode de suppression d'echo - Google Patents

Systeme et methode de suppression d'echo Download PDF

Info

Publication number
CA2289275A1
CA2289275A1 CA 2289275 CA2289275A CA2289275A1 CA 2289275 A1 CA2289275 A1 CA 2289275A1 CA 2289275 CA2289275 CA 2289275 CA 2289275 A CA2289275 A CA 2289275A CA 2289275 A1 CA2289275 A1 CA 2289275A1
Authority
CA
Canada
Prior art keywords
echo
line card
network
line
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA 2289275
Other languages
English (en)
Inventor
Yatish Kumar
Scott Mcclennon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Catena Networks Canada Inc
Original Assignee
Catena Networks Canada Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Catena Networks Canada Inc filed Critical Catena Networks Canada Inc
Priority to CA 2289275 priority Critical patent/CA2289275A1/fr
Priority to EP00977136A priority patent/EP1232644A4/fr
Priority to AU14815/01A priority patent/AU1481501A/en
Priority to CA002390059A priority patent/CA2390059A1/fr
Priority to PCT/US2000/030898 priority patent/WO2001035624A1/fr
Publication of CA2289275A1 publication Critical patent/CA2289275A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephonic Communication Services (AREA)
CA 2289275 1999-11-10 1999-11-10 Systeme et methode de suppression d'echo Abandoned CA2289275A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CA 2289275 CA2289275A1 (fr) 1999-11-10 1999-11-10 Systeme et methode de suppression d'echo
EP00977136A EP1232644A4 (fr) 1999-11-10 2000-11-09 Systeme et procede d'annulation d'echo
AU14815/01A AU1481501A (en) 1999-11-10 2000-11-09 A system and method for echo cancellation
CA002390059A CA2390059A1 (fr) 1999-11-10 2000-11-09 Systeme et procede d'annulation d'echo
PCT/US2000/030898 WO2001035624A1 (fr) 1999-11-10 2000-11-09 Systeme et procede d'annulation d'echo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2289275 CA2289275A1 (fr) 1999-11-10 1999-11-10 Systeme et methode de suppression d'echo

Publications (1)

Publication Number Publication Date
CA2289275A1 true CA2289275A1 (fr) 2001-05-10

Family

ID=4164593

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2289275 Abandoned CA2289275A1 (fr) 1999-11-10 1999-11-10 Systeme et methode de suppression d'echo

Country Status (4)

Country Link
EP (1) EP1232644A4 (fr)
AU (1) AU1481501A (fr)
CA (1) CA2289275A1 (fr)
WO (1) WO2001035624A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004059866A1 (fr) * 2002-12-24 2004-07-15 Surf Communication Solutions, Ltd. Procede et appareil d'annulation d'echo au moyen d'une carte de ligne

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5323460A (en) * 1992-01-07 1994-06-21 Ag Communication Systems Corporation Enhanced subscriber line interface circuit
US5644596A (en) * 1994-02-01 1997-07-01 Qualcomm Incorporated Method and apparatus for frequency selective adaptive filtering
JP3359460B2 (ja) * 1995-03-20 2002-12-24 沖電気工業株式会社 適応フィルタ及びエコーキャンセラ
US5926464A (en) * 1996-04-04 1999-07-20 Lucent Technologies Inc. Customer telecommunication interface device with built-in network features
FR2758677B1 (fr) * 1997-01-21 1999-04-02 Matra Communication Procede d'annulation d'echo et annuleur d'echo mettant en oeuvre un tel procede
US6141406A (en) * 1997-03-27 2000-10-31 T-Netix, Inc. Method and apparatus for detecting a secondary destination of a telephone call based on changes in the telephone signal path
US6028929A (en) * 1997-11-14 2000-02-22 Tellabs Operations, Inc. Echo canceller employing dual-H architecture having improved non-linear echo path detection
US6067316A (en) * 1997-11-19 2000-05-23 Globespan, Inc. Circuit for combined xDSL and other services

Also Published As

Publication number Publication date
EP1232644A4 (fr) 2004-09-15
AU1481501A (en) 2001-06-06
EP1232644A1 (fr) 2002-08-21
WO2001035624A1 (fr) 2001-05-17

Similar Documents

Publication Publication Date Title
AU741749B2 (en) Multi-user wireless telephone having dual echo cancellers
US5625685A (en) Network termination unit
US5153875A (en) Adaptive balancing network
US8401177B2 (en) Combined sidetone and hybrid balance
JPS6171728A (ja) デイジタル・エコー・キヤンセラー
EP0565671B1 (fr) Procede permettant de faire converger un suppresseur d'echo
US5014306A (en) Voice and data telephone communication system and method
EP0956657B1 (fr) Sélection dynamique d'annuleurs d'echo et de parametres
JP2904637B2 (ja) 通信網の信号方法
CA2289275A1 (fr) Systeme et methode de suppression d'echo
CA2390059A1 (fr) Systeme et procede d'annulation d'echo
US7106855B2 (en) Method and apparatus for connecting broadband voice and data signals to telephone systems
US6687236B1 (en) Method for providing echo control devices in communication links to intelligent peripherals
JP2003533072A (ja) エコー・キャンセルのためのシステムおよび方法
JPH11177657A (ja) Ｃａｓ信号の検出のためにエコー消去器を使用する方法及び電話方式装置
KR100765322B1 (ko) 가변 정합이 가능한 아날로그 트렁크 정합장치 및 그제어방법
AU6999698A (en) Digital signal processor-based telephone test set
JP3165293B2 (ja) セルベースエコーキャンセラ
MXPA99006695A (en) Dynamic echo canceller and parameter selection in telephony systems
JPH0359633B2 (fr)
Lu et al. Echo cancellation of FXO line card expansion
JPH11225096A (ja) エコーキャンセラ装置及びエコー制御方法
JPH1188237A (ja) エコーキャンセラ
EP1262056A2 (fr) Systeme a gain de paires a capacites de debit de v.90

Legal Events

Date Code Title Description
FZDE Dead