ES2175759T3 - Procedimiento y dispositivo para medir los parametros del eco en lineas telefonicas. - Google Patents

Procedimiento y dispositivo para medir los parametros del eco en lineas telefonicas.

Info

Publication number
ES2175759T3
ES2175759T3 ES98941303T ES98941303T ES2175759T3 ES 2175759 T3 ES2175759 T3 ES 2175759T3 ES 98941303 T ES98941303 T ES 98941303T ES 98941303 T ES98941303 T ES 98941303T ES 2175759 T3 ES2175759 T3 ES 2175759T3
Authority
ES
Spain
Prior art keywords
procedure
measuring
parameters
telephone lines
eco
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.)
Expired - Lifetime
Application number
ES98941303T
Other languages
English (en)
Inventor
Andrea Allasia
Guido Manzone
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.)
Telecom Italia SpA
Original Assignee
Telecom Italia Lab SpA
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 Telecom Italia Lab SpA filed Critical Telecom Italia Lab SpA
Application granted granted Critical
Publication of ES2175759T3 publication Critical patent/ES2175759T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H04B3/493—Testing echo effects or singing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/46—Arrangements for calling a number of substations in a predetermined sequence until an answer is obtained

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

Un procedimiento de medida de los parámetros del eco en líneas telefónicas, que comprende la operación de la inyección en la línea (L) de una señal de prueba y detectar la correspondiente señal de retorno generada por la propia línea (L) como un efecto del eco, caracterizado porque se emplea como señal de prueba una señal sinusoidal de impulsos con una envolvente lenticular, con una duración limitada de tiempo (a) de forma tal que pueda identificarse un máximo local de la mencionada envolvente tanto en la señal de prueba como en la señal de retorno, y teniendo un valor cero al comienzo y al final de su duración.
ES98941303T 1997-07-11 1998-07-07 Procedimiento y dispositivo para medir los parametros del eco en lineas telefonicas. Expired - Lifetime ES2175759T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT97TO000626A IT1293441B1 (it) 1997-07-11 1997-07-11 Procedimento e dispositivo per la misurazione dei parametri dell'eco su linee telefoniche.

Publications (1)

Publication Number Publication Date
ES2175759T3 true ES2175759T3 (es) 2002-11-16

Family

ID=11415862

Family Applications (1)

Application Number Title Priority Date Filing Date
ES98941303T Expired - Lifetime ES2175759T3 (es) 1997-07-11 1998-07-07 Procedimiento y dispositivo para medir los parametros del eco en lineas telefonicas.

Country Status (19)

Country Link
US (1) US6501830B1 (es)
EP (1) EP1012997B1 (es)
JP (1) JP3626094B2 (es)
KR (1) KR20010021726A (es)
CN (1) CN1263652A (es)
AR (1) AR013362A1 (es)
AT (1) ATE215286T1 (es)
AU (1) AU729006B2 (es)
BR (1) BR9810673B1 (es)
CA (1) CA2295226C (es)
DE (1) DE69804474T2 (es)
ES (1) ES2175759T3 (es)
HR (1) HRP980386A2 (es)
HU (1) HUP0003047A2 (es)
IL (1) IL133518A0 (es)
IT (1) IT1293441B1 (es)
NO (1) NO320584B1 (es)
WO (1) WO1999003244A2 (es)
YU (1) YU49150B (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7236573B2 (en) 2002-04-01 2007-06-26 At&T Intellectual Property, Inc. Method and apparatus for testing telephone sound quality
EP1376997A1 (en) * 2002-06-24 2004-01-02 Alcatel Method for testing and adapting an audio unit parameters to a telecommunication system
CN100379210C (zh) * 2003-06-08 2008-04-02 华为技术有限公司 通信系统回波特性的在线测试方法及测试系统
CN101119136B (zh) * 2006-08-04 2012-07-11 华为技术有限公司 一种获取线路基本参数的方法及装置
CN109459731B (zh) * 2018-12-13 2020-11-17 广州极飞科技有限公司 信号处理方法和装置、毫米波雷达

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3612782A (en) * 1970-03-02 1971-10-12 Bell Telephone Labor Inc Method and apparatus for detecting the location of a fault between two repeaters of a one-way repeatered transmission line
US3777256A (en) * 1972-02-14 1973-12-04 North Electronics Corp Delay distortion measurement system
US4039769A (en) * 1976-04-22 1977-08-02 Bradley Telcom Corporation Instrument and method for measuring envelope delay in a transmission channel
JPH01212127A (ja) * 1988-02-19 1989-08-25 Nec Corp エコー除去方法及びエコー除去装置
JPH0282820A (ja) * 1988-09-20 1990-03-23 Nec Corp 反響消去装置の自己診断回路
US5164989A (en) * 1990-12-11 1992-11-17 Octel Communications Corporation Echo cancellation methods and apparatus for voice processing systems
FR2713417B1 (fr) * 1993-12-02 1996-02-02 Europ Agence Spatiale Procédé de réglage adaptatif d'un suppresseur d'écho.
JP3198224B2 (ja) * 1995-01-10 2001-08-13 アンリツ株式会社 通話回線のエコー測定装置

Also Published As

Publication number Publication date
DE69804474D1 (de) 2002-05-02
BR9810673B1 (pt) 2013-12-03
DE69804474T2 (de) 2002-10-31
ITTO970626A1 (it) 1999-01-11
CA2295226C (en) 2003-05-20
WO1999003244A2 (en) 1999-01-21
AU8974098A (en) 1999-02-08
ATE215286T1 (de) 2002-04-15
CA2295226A1 (en) 1999-01-21
NO320584B1 (no) 2005-12-27
AR013362A1 (es) 2000-12-27
IT1293441B1 (it) 1999-03-01
AU729006B2 (en) 2001-01-25
HRP980386A2 (en) 1999-06-30
YU49150B (sh) 2004-03-12
JP2001510304A (ja) 2001-07-31
HUP0003047A2 (hu) 2001-01-29
EP1012997A2 (en) 2000-06-28
WO1999003244A3 (en) 1999-06-24
IL133518A0 (en) 2001-04-30
KR20010021726A (ko) 2001-03-15
NO20000119L (no) 2000-01-10
NO20000119D0 (no) 2000-01-10
US6501830B1 (en) 2002-12-31
BR9810673A (pt) 2000-12-05
CN1263652A (zh) 2000-08-16
EP1012997B1 (en) 2002-03-27
JP3626094B2 (ja) 2005-03-02
YU1000A (sh) 2001-05-28

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